A traction and rescue device for a fire truck

Abstract

A traction and rescue device for a fire truck belongs to the technical field of fire trucks. The fire truck includes a front frame beam and a rear frame beam, which are parallel to each other front and back; a rear bumper, the left side of the front end and the left side of the rear end of which are respectively connected to the front frame beam and the rear frame beam through a tail bumper fixed connecting arm; the obstacle removal device includes a lead rope seat fixing frame, a winch mechanism, a lead rope mechanism, a pulley mechanism, a traction rope limiting mechanism and a group of guide rope mechanisms, the lead rope seat fixing frame is fixed between the right end of the front frame beam and the rear frame beam, the winch mechanism is arranged on the lead rope mechanism, the lead rope mechanism is fixed on the lead rope seat fixing frame, the pulley mechanism is arranged on the right side of the lead rope seat fixing frame, the traction rope limiting mechanism is fixed to the front left end of the lead rope seat fixing frame, and a group of guide rope mechanisms are located on the left side of the traction rope limiting mechanism and fixed to the front frame beam. Reduce the power of the winch mechanism, save energy consumption; ensure the service life of the obstacle removal traction rope; reflect the flexibility of obstacle removal selection.

Description

Technical Field

[0001] The invention belongs to the technical field of fire fighting vehicles, and in particular relates to a traction and rescue device of a fire fighting vehicle. Background Art

[0002] The function of the aforementioned traction and rescue device is mainly, but not absolutely limited to, clearing obstacles that affect rescue and road traffic. Obstacles include various artificially set piles, piers and poles, and building collapses, mountain rolling stones, tilted or lying trees, etc. caused by earthquakes and landslides. If the obstacles cannot be cleared in time, then there is no doubt that the precious time for emergency rescue will be delayed and the effect of emergency rescue will be affected. For example, if there is a lack of dedicated traction and rescue equipment for obstacle removal, then the obstacle removal can only be done by manpower. On the one hand, the obstacle removal efficiency is low, on the other hand, the labor intensity of the obstacle removal personnel is high, and on the other hand, the opportunity for emergency rescue will also be delayed. From the above, it can be seen that obstacle removal belongs to the scope of rescue.

[0003] In the published Chinese patent documents, a large amount of technical information related to the clearing device of fire trucks can be found, such as CN2255388Y (road tow truck), CN2443991Y (snow road tow truck), CN201442539U (a new type of tow truck bracket), CN201626792U (automatic control device for rolling up objects of tow truck), CN102211539B (mini road traction tow truck), CN201970910U (flatbed tow truck with rolling body), CN203020152U (tow truck for road), CN103074911B (road tow truck device for fire truck), CN104175938A (fire scene tow truck), CN104190027A (tow truck device for fire truck and fire truck) and CN204319583U (fire truck with electric traction device), etc.

[0004] A typical example is the "electric winch device for fire trucks" recommended by CN104724621B. This patent objectively reflects the three technical effects recorded in the technical effect column of its specification and has the advantage of a relatively simple structure, but it has the following shortcomings: since the obstacle is directly pulled by the traction winch through the traction rope during obstacle removal, the required traction force is large and needs to be supported by a winch mechanism (also called "winch mechanism", the same below) electric winch motor with sufficient power, which is not conducive to reducing power consumption; since the friction resistance between the traction rope and the statically set rope guide roller is large during the obstacle removal traction process, on the one hand, both the traction rope and the rope guide roller will be damaged, and on the other hand, the obstacle removal traction speed will be affected to a certain extent; since the obstacle removal traction method can only be expressed as rear traction (i.e., rear traction), it is picky about the obstacle removal method under different circumstances. In view of the above situation, there is still a need for improvement, and the technical solution to be introduced below is produced in this context. Summary of the invention

[0005] The task of the present invention is to provide a traction and rescue device for a fire truck which helps to significantly reduce the power of a winch mechanism to save energy, significantly reduce the friction between the traction rope and the transition guide component during the traction process to well ensure the service life of the traction rope, and reasonably select the obstacle removal traction direction according to the location of the obstacle to embody good obstacle removal flexibility.

[0006] The task of the present invention is accomplished in this way: a traction and rescue device for a fire truck, the fire truck comprising a front frame beam and a rear frame beam, the front frame beam and the rear frame beam are parallel to each other in the length direction; a rear bumper, the front left side and the rear left side of the rear bumper are respectively fixedly connected to the front frame beam and the rear frame beam through a rear bumper fixed connecting arm; the traction and rescue device comprises a rope seat fixing frame, a winch mechanism, a rope guiding mechanism, a pulley mechanism, a traction A rope limiting mechanism and a group of rope guiding mechanisms, a rope guiding seat fixing frame is fixed between the right end of the front beam of the frame and the rear beam of the frame, and is also fixed to the opposite side of the fixed connecting arm of the tail bumper, a winch mechanism is arranged on the rope guiding mechanism, and the rope guiding mechanism is fixed on the rope guiding seat fixing frame, a pulley mechanism is arranged on the right side of the rope guiding seat fixing frame, a traction rope limiting mechanism is fixed to the front left end of the rope guiding seat fixing frame, and a group of rope guiding mechanisms are located on the left side of the traction rope limiting mechanism and are fixed to the front beam of the frame in a spaced state.

[0007] In a specific embodiment of the present invention, a front frame beam sub-beam is fixed to the upper part of the length direction of the front frame beam, and a rear frame beam sub-beam is fixed to the upper part of the length direction of the rear frame beam; a sub-beam connecting crossbeam is fixed between the right ends of the front frame beam sub-beam and the rear frame beam sub-beam facing each other; the left end of the rear bumper fixing connecting arm located on the left side of the front end of the rear bumper is fixed to the front side of the right end of the front frame beam, and the rear bumper fixing connecting arm located on the left side of the rear end of the rear bumper is fixed to the front side of the right end of the front frame beam. The left end of the connecting arm is fixed to the rear side of the right end of the rear beam of the frame; the rope guide seat fixing frame includes a fixing frame bottom plate, a fixing frame front side plate, a fixing frame rear side plate, a fixing frame right side plate and a shielding crossbeam, the fixing frame bottom plate is fixed between the lower parts of the fixing frame front side plate and the fixing frame rear side plate on the opposite side, the upper part of the fixing frame front side plate is fixed to the lower part of the front side of the right end of the front beam of the frame, the upper part of the fixing frame rear side plate is fixed to the lower part of the rear side of the right end of the rear beam of the frame, and the fixing frame right side plate is fixed at the bottom plate corresponding to the fixing frame bottom plate The right side position in the length direction is fixed between the right ends of the front side plate of the fixing frame and the rear side plate of the fixing frame, and a first traction rope hole I of the right side plate of the fixing frame and a second traction rope hole II of the right side plate of the fixing frame are provided on the right side plate of the fixing frame, the shielding cross beam corresponds to the upper side of the length direction of the right side plate of the fixing frame, and the front end of the shielding cross beam is fixed to the right rear side of the front end of the front beam of the frame, and the rear end of the shielding cross beam is fixed to the right front side of the rear beam of the frame, wherein the space formed by the fixing frame bottom plate, the fixing frame front side plate, the fixing frame rear side plate and the fixing frame right side plate cooperates to form a rope guiding mechanism cavity, and the left side and the upper part of the rope guiding mechanism cavity are formed with openings; the rope guiding mechanism together with the winch mechanism are arranged on the fixing frame bottom plate at a position corresponding to the rope guiding mechanism cavity; the pulley mechanism is arranged on the right side of the right side plate of the fixing frame at a position between the first traction rope hole I of the right side plate of the fixing frame and the second traction rope hole II of the right side plate of the fixing frame; the traction rope limiting mechanism is fixed to the left end of the front side plate of the fixing frame.

[0008] In another specific embodiment of the present invention, the rope guiding mechanism includes a winch front support seat fixing frame, a winch rear support seat fixing frame, a rope guiding roller support frame, a support seat fixing frame left fixed connecting crossbeam, a support seat fixing frame right fixed connecting crossbeam, a rope guiding frame pulley, a rope guiding frame and a rope guiding wheel. The winch front support seat fixing frame is fixed to the fixing frame bottom plate in the rope guiding mechanism cavity, the winch rear support seat fixing frame is fixed to the fixing frame bottom plate in the rope guiding mechanism cavity at a position corresponding to the rear of the winch front support seat fixing frame, and the support seat fixing frame right fixed connecting crossbeam is fixed to the right end of the winch front support seat fixing frame and the winch rear support seat fixing frame. A rope-pulling roller support frame matching cavity is formed on the right side of the right fixed connecting cross beam of the support seat fixing frame between the right end facing one side of the support seat fixing frame, and a rope-pulling roller support frame right fixed connecting cross beam rope-pulling hole is provided in the middle part of the right fixed connecting cross beam of the support seat fixing frame in the length direction. The rope-pulling roller support frame is arranged in the matching cavity of the rope-pulling roller support frame and is fixed to the right fixed connecting cross beam of the support seat fixing frame through a rope-pulling roller support frame fixing block arranged on the right side of the right fixed connecting cross beam of the support seat fixing frame. On the right side of the rope-pulling roller support frame and along the length direction of the rope-pulling roller support frame, a rope-pulling roller support frame matching cavity is formed. A rope-pulling roller support frame cavity, and a rope-pulling roller support frame rope-pulling through hole is provided in the middle of the length direction of the rope-pulling roller support frame, and the rope-pulling roller support frame rope-pulling through hole corresponds to the rope-pulling hole of the right fixed connecting crossbeam of the support seat fixing frame, and a pair of traction rope guiding rollers are rotatably arranged in the rope-pulling roller support frame cavity of the rope-pulling roller support frame in a longitudinally parallel state, and the pair of traction rope guiding rollers are respectively located on both sides of the rope-pulling roller support frame rope-pulling through hole, and the space between the pair of traction rope guiding rollers constitutes an obstacle-clearing traction rope limiting guide cavity, and the left fixed connecting crossbeam of the support seat fixing frame is fixed to the front support of the winch The rope pulling frame pulley is rotatably arranged on the rope pulling frame pulley seat at a position corresponding to the lower part of the left fixed connecting beam of the supporting seat fixing frame, and the rope pulling frame pulley seat is fixed to the left end of the rope pulling frame, and the right end of the rope pulling frame is hinged to the right fixed connecting beam of the supporting seat fixing frame and the middle part of the length direction of the rope pulling roller supporting frame at the same time, and a rope pulling wheel cavity is formed in the middle part of the rope pulling frame, and the rope pulling wheel is rotatably arranged in the rope pulling wheel cavity through the rope pulling wheel shaft; the winch mechanism is arranged between the upper part of the front supporting seat fixing frame of the winch and the rear supporting seat fixing frame of the winch.

[0009] In another specific embodiment of the present invention, the winch mechanism includes a winch front support, a winch rear support, a winch shaft, a hydraulic oil motor, a reducer, an upper rope stop roller, a right rope stop plate and an obstacle removal traction rope. The bottom of the winch front support is fixed to the top of the winch front support bracket, the bottom of the winch rear support is fixed to the top of the winch rear support bracket, the front end of the winch shaft is rotatably supported on the winch front support, and the rear end is rotatably supported on the winch rear support, and the hydraulic oil motor is connected to the hydraulic oil on the fire truck. The hydraulic oil motor is fixed on the front side of the winch front support in a horizontal position and is connected to the reducer control, and the reducer is fixed on the rear side of the winch rear support and is connected to the winch shaft transmission, the upper rope stop roller corresponds to the upper left side of the winch shaft in a horizontal position, the front end of the upper rope stop roller is rotatably supported on the upper rope stop roller front bracket, the upper rope stop roller front bracket is fixed to the front upper part of the upper rope stop roller bracket seat, the rear end of the upper rope stop roller is rotatably supported on the upper rope stop roller rear bracket, and the upper rope stop roller rear bracket is fixed to the front upper part of the upper rope stop roller bracket seat. The frame is fixed to the rear side of the upper rope stop roller bracket seat, and the lower part of the upper rope stop roller bracket seat is fixed between the left ends of the winch front support and the winch rear support. The right rope stop plate corresponds to the right side of the winch shaft in a horizontal state, and the front end of the right rope stop plate is fixed to the right side of the winch front support, while the rear end of the right rope stop plate is fixed to the right side of the winch rear support. One end of the obstacle clearing traction rope is fixed on the winch shaft, the middle part is wound around or exits the winch shaft, and the other end is constituted as a free end and passes through the rope pulley, the obstacle clearing An obstacle clearing traction rope hook is fixed behind the traction rope limiting guide cavity, the rope through hole of the rope roller support frame, the rope hole of the right fixed connecting beam of the support seat fixing frame, the second traction rope hole II of the right side plate of the fixing frame opened on the right side plate of the fixing frame, the pulley mechanism, the first traction rope hole I of the right side plate of the fixing frame opened on the right side plate of the fixing frame, the traction rope limiting mechanism and the group of rope guide mechanisms. When in the non-obstacle clearing state, the obstacle clearing traction rope hook is temporarily hooked on the front part of the fire truck.

[0010] In another specific embodiment of the present invention, the pulley mechanism includes a pulley support frame, an upper locking plate, a lower locking plate, a traction pulley, a traction hook ring connecting seat and a traction hook ring, the pulley support frame is fixed to the right side surface of the right side plate of the fixed frame in a longitudinal state at a position corresponding to the first traction rope hole I of the right side plate of the fixed frame and the second traction rope hole II of the right side plate of the fixed frame, and an upper locking plate hinge seat and a lower locking plate hinge seat are horizontally fixed on the right side of the pulley support frame in a state perpendicular to the pulley support frame, the upper locking plate hinge seat and the lower locking plate hinge seat correspond to each other up and down, an upper locking plate pin slot is provided on the rear side of the right end of the upper locking plate hinge seat, and a lower locking plate hinge seat is provided on the right side of the lower locking plate hinge seat. The lock plate is hinged on the left side of the lock plate hinge seat, and a lower lock plate latch groove is provided at the right rear side of the lock plate hinge seat and at a position corresponding to the upper lock plate latch groove. The upper lock plate latch groove and the lower lock plate latch groove are communicated with the outside. One end of the upper lock plate is hinged to the upper lock plate hinge seat at a position located on one side of the upper lock plate latch groove through the upper lock plate hinge pin shaft, and the other end is constituted as a free end and is provided with an upper lock plate latch hole. An upper lock plate latch is arranged on the upper lock plate latch hole. The lower end of the upper lock plate latch is fixedly connected or released from the fixed connection with the upper lock plate latch connecting hole opened on the upper lock plate hinge seat and located on the other side of the upper lock plate latch groove. One end of the lower lock plate is hinged on the left side of the lock plate hinge seat through the lower lock plate hinge pin shaft. The position on one side of the lower lock plate latch groove is hinged with the lower lock plate hinge seat, and the other end is constituted as a free end and is provided with a lower lock plate latch hole, and a lower lock plate latch is arranged on the lower lock plate latch hole, and the upper part of the lower lock plate latch is fixedly connected or released from the fixed connection with the lower lock plate latch connection hole which is provided on the lower lock plate hinge seat and is located on the other side of the lower lock plate latch groove, and the traction sheave is rotatably arranged on the traction sheave shaft through the traction sheave bearing, and the upper end and the lower end of the traction sheave shaft are matched or released from the match with the upper lock plate latch groove and the lower lock plate latch groove at the same time, and are simultaneously restricted or released by the upper lock plate and the lower lock plate, One end of the traction hook ring connecting seat is rotatably arranged on the traction pulley shaft at a position corresponding to the upper and lower positions of the traction pulley, and is limited by a limiting nut. One end of the traction hook ring connecting seat is formed with a traction pulley cavity, one side of the traction pulley corresponds to the traction pulley cavity, and the other end corresponds to between the upper locking plate hinge seat and the lower locking plate hinge seat. A traction hook ring hinge ear extends from the other end of the traction hook ring connecting seat, and a traction hook ring pin hole is provided on the traction hook ring hinge ear. The traction hook is connected or disconnected with the traction hook ring hinge ear at a position corresponding to the traction hook ring pin hole through a traction hook ring pin; the obstacle clearing traction rope is sleeved on the traction pulley.

[0011] In another specific embodiment of the present invention, the traction rope limiting mechanism includes a transverse limiting wheel frame, a longitudinal limiting wheel frame, a longitudinal limiting wheel and a pair of transverse limiting wheels, a pair of transverse limiting wheel frame fixed folded edges are formed on the front side of the transverse limiting wheel frame, and a transverse limiting wheel frame left folded edge is formed on the upper left side of the transverse limiting wheel frame, a pair of transverse limiting wheel frame fixed folded edges are fixed to the front side plate of the fixing frame at a position corresponding to the rear left end of the front side plate of the fixing frame, and a transverse limiting wheel cavity is formed in the middle part of the height direction of the transverse limiting wheel frame, a longitudinal limiting wheel cavity is formed in the middle part of the longitudinal limiting wheel frame from the left side to the right side of the longitudinal limiting wheel frame, and on the right side of the longitudinal limiting wheel frame and A longitudinal limiting wheel frame fixing fold is formed at the front and rear sides of the right cavity opening respectively corresponding to the longitudinal limiting wheel cavity, the upper end of the longitudinal limiting wheel frame fixing fold is fixed to the left fold of the transverse limiting wheel frame, and the lower end is fixed to the fixing ear of the front side plate of the fixing frame extending at the lower left end of the front side plate of the fixing frame. The longitudinal limiting wheel is rotatably arranged in the longitudinal limiting wheel cavity through the longitudinal limiting wheel pin shaft, and a traction rope limiting stop bar is arranged below the longitudinal limiting wheel, and a pair of transverse limiting wheels are rotatably arranged in the transverse limiting wheel cavity through the transverse limiting wheel pin shaft, and the obstacle clearing traction rope passes through a pair of transverse limiting wheels and between the longitudinal limiting wheel and the traction rope limiting stop bar in sequence.

[0012] In a further specific embodiment of the present invention, the group of guide rope mechanisms each includes a guide rope wheel frame fixing plate, a guide rope wheel frame and a guide rope wheel, the guide rope wheel frame fixing plate is fixed to the front beam of the frame, the guide rope wheel frame is fixed to the lower part of the guide rope wheel frame fixing plate, and the guide rope wheel frame is formed with a guide rope wheel cavity, the guide rope wheel is rotatably arranged in the guide rope wheel cavity through a guide rope wheel shaft, and the obstacle clearing traction rope passes through the guide rope wheel.

[0013] In a further specific embodiment of the present invention, a pair of traction rope guide roller shaft matching holes are respectively opened at the upper and lower parts of the rope guide roller support frame and at corresponding positions, and the pair of traction rope guide rollers are rotatably arranged in the middle of a pair of traction rope guide roller shafts through traction rope guide roller bearings, and the upper and lower ends of the pair of traction rope guide roller shafts are respectively matched with the traction rope guide roller shaft matching holes.

[0014] In yet another specific embodiment of the present invention, a rope-pulling roller support frame articulation shaft mating hole is respectively provided at the center position of the upper and lower parts of the rope-pulling roller support frame, and a support seat fixing frame right fixed connecting crossbeam articulation shaft mating hole is respectively provided at the center position of the upper and lower parts of the right fixed connecting crossbeam of the support seat fixing frame, the support seat fixing frame right fixed connecting crossbeam articulation shaft mating hole corresponds to the rope-pulling roller support frame articulation shaft mating hole, a pair of rope-pulling frame articulation ears extend from the right end of the rope-pulling frame, and a rope-pulling frame articulation ear shaft is respectively provided on the pair of rope-pulling frame articulation ears, and the rope-pulling frame articulation ear shaft is simultaneously articulated with the support seat fixing frame right fixed connecting crossbeam articulation shaft mating hole and the rope-pulling roller support frame articulation shaft mating hole.

[0015] In yet another specific embodiment of the present invention, a pair of rope-pulling roller support frame bolt holes are respectively opened at both ends of the rope-pulling roller support frame, a pair of bolt through holes are respectively opened at both ends of the right fixed connecting beam of the support seat fixing frame and at positions corresponding to the pair of rope-pulling roller support frame bolt holes, and a pair of fixing block bolts are respectively provided on the pair of rope-pulling roller support frame fixing blocks, the pair of fixing block bolts sequentially pass through a pair of bolt through holes and a pair of rope-pulling roller support frame bolt holes and are limited by bolt limiting nuts screwed on the pair of fixing block bolts.

[0016] One of the technical effects of the technical solution provided by the present invention is that the power of the winch mechanism can be significantly reduced and energy consumption can be saved due to the use of a rope-leading mechanism and a pulley mechanism; secondly, since the rope-leading wheel of the rope-leading mechanism and the traction pulley of the pulley mechanism, which are transition guide components of the obstacle-clearing traction rope, rotate during the traction process, the friction of the obstacle-clearing traction rope during the traction process can be significantly reduced and the service life of the obstacle-clearing traction rope can be well guaranteed; thirdly, since the traction pulley, the traction hook connection seat and the traction hook and pulley support seat of the structural system of the pulley mechanism can be separated when the rear of the vehicle is to be cleared, both the front of the vehicle and the rear of the vehicle can be used for traction clearance, thereby reflecting the flexibility of the clearance selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment of the present invention.

[0018] Figure 2 for Figure 1 Detailed structural diagram of the rope guiding mechanism shown.

[0019] Figure 3 for Figure 1 Detailed structural diagram of the pulley mechanism shown. DETAILED DESCRIPTION

[0020] In order to more clearly understand the technical essence and beneficial effects of the present invention, the applicant provides a detailed description in the form of embodiments below. However, the description of the embodiments is not a limitation of the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as within the scope of the technical solution of the present invention.

[0021] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 1 It refers to the position state, and therefore cannot be understood as a special limitation of the technical solution provided by the present invention.

[0022] See also Figure 1 , showing a structural system of a fire truck, including a front frame beam 1 and a rear frame beam 2, wherein the front frame beam 1 and the rear frame beam 2 are parallel to each other in the length direction; and a rear bumper 3 (also called a "rear bumper"), wherein the front left side and the rear left side of the rear bumper 3 are respectively fixedly connected to the front frame beam 1 and the rear frame beam 2 through a rear bumper fixed connecting arm 31.

[0023] The structural system of the traction and rescue device is shown, which includes a rope guide seat fixing frame 4, a winch mechanism 5, a rope guide mechanism 6, a pulley mechanism 7, a traction rope limiting mechanism 8 and a group of rope guide mechanisms 9. The rope guide seat fixing frame 4 is fixed between the right ends of the front beam 1 of the frame and the rear beam 2 of the frame, and is also fixed to the opposite side of the fixed connecting arm 31 (a pair) of the rear bumper. The winch mechanism 5 is arranged on the rope guide mechanism 6, and the rope guide mechanism 6 is fixed on the rope guide seat fixing frame 4. The pulley mechanism 7 is arranged on the right side of the rope guide seat fixing frame 4. The traction rope limiting mechanism 8 is fixed to the front left end of the rope guide seat fixing frame 4. A group of rope guide mechanisms 9 is located on the left side of the traction rope limiting mechanism 8 and is fixed to the front beam 1 of the frame in a spaced state.

[0024] Depend on Figure 1 As shown, a front frame sub-beam 11 is fixed to the upper part of the longitudinal direction of the aforementioned front frame beam 1, and a rear frame sub-beam 21 is fixed to the upper part of the longitudinal direction of the aforementioned rear frame beam 2; an auxiliary beam connecting crossbeam 12 is fixed between the right ends of the front frame sub-beam 11 and the rear frame sub-beam 21 facing each other; the left end of the aforementioned rear bumper fixed connecting arm 31 located on the left side of the front end of the aforementioned rear bumper 3 is fixed to the front side of the right end of the aforementioned front frame beam 1, and the left end of the rear bumper fixed connecting arm 31 located on the left side of the rear end of the rear bumper 3 is fixed to the rear side of the right end of the aforementioned rear frame beam 2.

[0025] The aforementioned rope guide seat fixing frame 4 includes a fixing frame bottom plate 41, a fixing frame front side plate 42, a fixing frame rear side plate 43, a fixing frame right side plate 44 and a shielding crossbeam 45. The fixing frame bottom plate 41 is fixed between the lower parts of the opposite sides of the fixing frame front side plate 42 and the fixing frame rear side plate 43, the upper part of the fixing frame front side plate 42 is fixed to the lower part of the right end front side of the aforementioned frame front beam 1, the upper part of the fixing frame rear side plate 43 is fixed to the lower part of the right end rear side of the aforementioned frame rear beam 2, the fixing frame right side plate 44 is fixed between the opposite sides of the right ends of the fixing frame front side plate 42 and the fixing frame rear side plate 43 at a position on the right side corresponding to the length direction of the aforementioned fixing frame bottom plate 41, and a fixing frame right side plate first traction rope hole Ⅰ441 and a fixing frame right side plate second traction rope hole Ⅱ442 are provided on the fixing frame right side plate 44, the shielding crossbeam 45 corresponds to the upper part of the length direction of the fixing frame right side plate 44, and the shielding crossbeam 45 The front end of the crossbeam 45 is fixed to the rear side of the right end of the aforementioned front beam 1 of the vehicle frame, and the rear end of the shielding crossbeam 45 is fixed to the front side of the right end of the aforementioned rear beam 2 of the vehicle frame, wherein the space formed by the aforementioned fixing frame bottom plate 41, the fixing frame front side plate 42, the fixing frame rear side plate 43 and the fixing frame right side plate 44 cooperate to form a rope-guiding mechanism cavity 46, and the left side and the upper part of the rope-guiding mechanism cavity 46 are both open, that is, the left side of the rope-guiding mechanism cavity 46 is open, and the upper part is also open; the aforementioned rope-guiding mechanism 6 together with the aforementioned winch mechanism 5 are arranged on the aforementioned fixing frame bottom plate 41 at a position corresponding to the aforementioned rope-guiding mechanism cavity 46; the aforementioned pulley mechanism 7 is arranged on the right side of the aforementioned fixing frame right side plate 44 at a position between the first traction rope hole Ⅰ441 of the aforementioned fixing frame right side plate and the second traction rope hole Ⅱ442 of the aforementioned fixing frame right side plate; the aforementioned traction rope limiting mechanism 8 is fixed to the left end of the aforementioned fixing frame front side plate 42.

[0026] See also Figure 2 And combined with Figure 1The rope guiding mechanism 6 comprises a winch front support seat fixing frame 61, a winch rear support seat fixing frame 62, a rope guiding roller support frame 63, a support seat fixing frame left fixed connecting crossbeam 64, a support seat fixing frame right fixed connecting crossbeam 65, a rope guiding frame pulley 66, a rope guiding frame 67 and a rope guiding wheel 68. The winch front support seat fixing frame 61 is fixed to the aforementioned fixing frame bottom plate 41 in the aforementioned rope guiding mechanism cavity 46. The winch rear support seat fixing frame 62 is also fixed to the fixing frame bottom plate 41 in the rope guiding mechanism cavity 46 at a position corresponding to the rear of the winch front support seat fixing frame 61. The support seat fixing frame right fixed connecting crossbeam 65 is fixed between the right end of the winch front support seat fixing frame 61 and the right end of the winch rear support seat fixing frame 62 facing each other. A rope-pulling roller support frame matching cavity 651 is formed on the right side of the length direction of the right fixed connecting crossbeam 65 of the support seat fixing frame, and a rope-pulling roller support frame right fixed connecting crossbeam rope hole 652 is opened in the middle of the length direction of the right fixed connecting crossbeam 65 of the support seat fixing frame. The rope-pulling roller support frame 63 is arranged in the rope-pulling roller support frame matching cavity 651 and is fixed to the right fixed connecting crossbeam 65 of the support seat fixing frame through a rope-pulling roller support frame fixing block 631 arranged on the right side of the right fixed connecting crossbeam 65 of the support seat fixing frame. A rope-pulling roller support frame cavity 632 is formed on the right side of the rope-pulling roller support frame 63 and along the length direction of the rope-pulling roller support frame 63, and in the middle of the length direction of the rope-pulling roller support frame 63 A rope-pulling roller support frame rope-pulling hole 633 is provided in the part, and the rope-pulling roller support frame rope-pulling hole 633 corresponds to the rope-pulling hole 652 of the right fixed connecting beam of the aforementioned support seat fixing frame. A pair of traction rope guide rollers 634 are rotatably arranged in a longitudinally parallel state in the aforementioned rope-pulling roller support frame cavity 632 of the rope-pulling roller support frame 63. The pair of traction rope guide rollers 634 are respectively located on both sides of the rope-pulling roller support frame rope-pulling hole 633, and the space between the pair of traction rope guide rollers 634 constitutes an obstacle-clearing traction rope limiting guide cavity 6341. The left fixed connecting beam 64 of the support seat fixing frame is fixed between the left ends of the winch front support seat fixing frame 61 and the winch rear support seat fixing frame 62 facing each other, and the rope-pulling frame pulley 66 is rotatably arranged on the rope-drawing frame pulley seat 661 at a position corresponding to the lower part of the left fixed connecting cross beam 64 of the support seat fixing frame, and the rope-drawing frame pulley seat 661 is welded and fixed to the left side surface of the left end of the rope-drawing frame 67. The right end of the rope-drawing frame 67 is simultaneously hinged to the middle part of the length direction of the aforementioned right fixed connecting cross beam 65 of the support seat fixing frame and the rope-drawing roller support frame 63. A rope-drawing wheel cavity 671 is formed in the middle part of the rope-drawing frame 67. The rope-drawing wheel 68 is rotatably arranged in the rope-drawing wheel cavity 671 through the rope-drawing wheel shaft 681, and is locked by a locking nut 6811 screwed on the end of the rope-drawing wheel shaft 681. The aforementioned winch mechanism 5 is arranged between the upper part of the aforementioned winch front support seat fixing frame 61 and the upper part of the winch rear support seat fixing frame 62. As shown in the figure, the aforementioned rope-drawing wheel shaft 681 is arranged longitudinally.

[0027] During the obstacle clearing process, under the action of the obstacle clearing traction rope 58, the left end of the rope frame 67 together with the rope pulley 68 will deviate forward and backward or even tilt upward. In this case, the rope frame pulley 66 plays a guiding role in the groove of the rope frame pulley seat 661, and the left fixed connecting beam 64 of the support seat fixing frame limits the upper position of the rope frame pulley 66.

[0028] Depend on Figure 1 and Figure 2 As shown, a winch front support seat fixing frame fold 611 is bent forward at the lower part of the length direction of the winch front support seat fixing frame 61, and a winch front support seat fixing frame fold screw hole 6111 is provided on the winch front support seat fixing frame fold 611. The winch front support seat fixing frame fold 611 is fixed to the fixing frame bottom plate screw hole 411 on the fixing frame bottom plate 41 by a fixing screw not shown in the figure at a position corresponding to the winch front support seat fixing frame fold screw hole 6111, thereby fixing the winch front support seat fixing frame 61 in the aforementioned rope guiding mechanism cavity 46. Since the structure and fixing method of the winch rear support seat fixing frame 62 are the same as those of the winch front support seat fixing frame 61, the applicant will not repeat them.

[0029] See you next time Figure 1The winch mechanism 5 comprises a winch front support 51, a winch rear support 52, a winch shaft 53, a hydraulic oil motor 54, a reducer 55, an upper rope stop roller 56, a right rope stop plate 57 and an obstacle removal traction rope 58. The bottom of the winch front support 51 is fixed to the top of the winch front support bracket 61 by a winch front support screw 511, and the bottom of the winch rear support 52 is fixed to the top of the winch rear support bracket 62 by a winch rear support screw 521. The front end of the winch shaft 53 (also called "capstan shaft") is rotatably supported on the winch front support 51, and the rear end is rotatably supported on the winch rear support 52. The hydraulic oil motor 54 is connected to the oil circuit of the hydraulic oil circuit control system on the fire truck. The hydraulic oil motor 54 is fixed on the front side of the winch front support 51 in a horizontal position and is control-connected to the reducer 55. The reducer 55 is fixed on the rear side of the winch rear support 52 and is transmission-connected to the winch shaft 53. The upper rope stop roller 56 corresponds to the upper left side of the winch shaft 53 in a horizontal position. The front end of the upper rope stop roller 56 is rotatably supported on the upper rope stop roller front bracket 561. The upper rope stop roller front bracket 561 is fixed to the upper front side of the upper rope stop roller bracket seat 5611. The rear end of the upper rope stop roller 56 is rotatably supported on the rear of the upper rope stop roller On the bracket 562, the upper rope stop roller rear bracket 562 is fixed to the rear side of the upper rope stop roller bracket seat 5611, and the lower part of the upper rope stop roller bracket seat 5611 is fixed between the left ends of the winch front support 51 and the winch rear support 52. The right rope stop plate 57 corresponds to the right side of the winch shaft 53 in a horizontal state and the front end of the right rope stop plate 57 is fixed to the right side of the winch front support 51, and the rear end of the right rope stop plate 57 is fixed to the right side of the winch rear support 52. One end of the obstacle removal traction rope 58 is fixed on the winch shaft 53, the middle part is wound around or withdrawn from the winch shaft 53, and the other end is constituted as a free end and passes through in sequence. An obstacle clearing traction rope hook is fixed behind the aforementioned rope pulley 68, the aforementioned obstacle clearing traction rope limiting guide cavity 6341, the rope pulling roller supporting frame rope pulling hole 633, the aforementioned supporting seat fixing frame right fixed connecting beam rope pulling hole 652, the aforementioned fixing frame right side plate second traction rope hole II442 opened on the aforementioned fixing frame right side plate 44, the aforementioned pulley mechanism 7, the aforementioned fixing frame right side plate first traction rope hole I441 opened on the fixing frame right side plate 44, the aforementioned traction rope limiting mechanism 8 and the aforementioned set of rope guiding mechanisms 9. When in a non-obstacle clearing state, the obstacle clearing traction rope hook is temporarily hooked on the front part of the fire truck.

[0030] Since the matching form of the hydraulic oil motor 54 and the reducer 55, i.e. the control connection mode and the working principle, belong to the known technology, and since the inlet and outlet oil of the hydraulic oil motor 54 can be reversed so that the winch shaft 53 can be rotated clockwise or counterclockwise through the reducer 55, the applicant will not elaborate on it.

[0031] The applicant needs to explain that: as another embodiment, the hydraulic oil motor 54 can be replaced with a motor with forward and reverse rotation functions, the motor is connected to the corresponding reducer 55, and the reducer 55 and the motor are arranged on the front side of the aforementioned winch front support 51 or the rear side of the winch rear support 52, the aforementioned winch shaft 53 is connected to the reducer 55, and the motor is electrically controlled and connected to the electrical control system on the fire truck.

[0032] See also Figure 3 And combined with Figure 1The pulley mechanism 7 includes a pulley support frame 71, an upper locking plate 72, a lower locking plate 73, a traction pulley 74, a traction hook ring connecting seat 75 and a traction hook ring 76. The pulley support frame 71 is fixed to the right side surface of the right side plate 44 of the above-mentioned fixed frame in a longitudinal state through a pulley support seat screw 713 at a position corresponding to the first traction rope hole Ⅰ441 of the right side plate of the above-mentioned fixed frame and the second traction rope hole Ⅱ442 of the right side plate of the fixed frame, and an upper locking plate hinge seat 711 and a lower locking plate hinge seat 712 are horizontally fixed (welded) on the right side of the pulley support frame 71 in a state perpendicular to the pulley support frame 71. The upper locking plate hinge seat 711 and the lower locking plate hinge seat 712 correspond to each other up and down, and an upper locking plate hinge seat 711 is provided on the rear side of the right end of the upper locking plate hinge seat 711. When the locking plate 710 is unlocked, a locking plate 711 is formed on the left side of the unlocking plate 712, and a locking plate 720 is provided on the right side of the unlocking plate 712. When the locking plate 710 is unlocked, a locking plate 711 is unlocked and a locking plate 720 is unlocked. When the locking cam 731 is in the unlocking state, the locking cam 732 is locked and the locking cam 7321 is locked. The upper plate latch groove 7111 and the lower lock plate latch groove 7121 are matched or released from the match, and are simultaneously limited or released by the aforementioned upper lock plate 72 and the lower lock plate 73. One end of the traction hook ring connecting seat 75 is rotatably arranged on the traction pulley shaft 742 at the upper and lower positions corresponding to the aforementioned traction pulley 74, and is limited by a limiting nut 751. One end of the traction hook ring connecting seat 75 is formed with a traction pulley cavity 752, one side of the traction pulley 74 corresponds to the traction pulley cavity 752, and the other end corresponds to between the upper lock plate hinge seat 711 and the lower lock plate hinge seat 712. A traction hook ring hinge ear 753 is extended from the other end of the traction hook ring connecting seat 75, and a traction hook ring latch hole 7531 is provided on the traction hook ring hinge ear 753.The traction hook 76 is connected or disconnected with the traction hook hinge ear 753 at a position corresponding to the traction hook pin hole 7531 through the traction hook pin 761; the aforementioned obstacle removal traction rope 58 is sleeved on the traction pulley 74. As shown in the figure, the aforementioned traction pulley 74 is arranged horizontally.

[0033] The aforementioned traction rope limiting mechanism 8 includes a transverse limiting wheel frame 81, a longitudinal limiting wheel frame 82, a longitudinal limiting wheel 83 and a pair of transverse limiting wheels 84, a pair of transverse limiting wheel frame fixed folded edges 811 are formed on the front side of the transverse limiting wheel frame 81, and a transverse limiting wheel frame left folded edge 812 is formed on the upper left side of the transverse limiting wheel frame 81, a pair of transverse limiting wheel frame fixed folded edges 811 are fixed to the front side plate 42 of the fixing frame by bolts at a position corresponding to the rear left end of the aforementioned fixing frame front side plate 42, and a transverse limiting wheel cavity 813 is formed in the middle part of the height direction of the transverse limiting wheel frame 81, a longitudinal limiting wheel cavity 821 is formed in the middle part of the longitudinal limiting wheel frame 82, which runs from the left side to the right side of the longitudinal limiting wheel frame 82, and on the right side of the longitudinal limiting wheel frame 82 and respectively corresponding to the longitudinal limiting wheel cavities 821 A longitudinal limiting wheel frame fixing fold 822 is formed at the front and rear sides of the right cavity opening, the upper end of the longitudinal limiting wheel frame fixing fold 822 is fixed to the aforementioned transverse limiting wheel frame left fold 812 by screws, and the lower end is fixed to the fixing ear 421 of the fixing frame front side plate extending at the lower left end of the fixing frame front side plate 42 by screws. The longitudinal limiting wheel 83 is rotatably set in the longitudinal limiting wheel cavity 821 through the longitudinal limiting wheel pin shaft 831, and a traction rope limiting baffle 832 is set below the longitudinal limiting wheel 83, and a pair of transverse limiting wheels 84 are rotatably set in the aforementioned transverse limiting wheel cavity 813 by the transverse limiting wheel pin shaft 841, and the aforementioned obstacle clearing traction rope 58 passes through the pair of transverse limiting wheels 84 and between the longitudinal limiting wheel 83 and the traction rope limiting baffle 832 in turn.

[0034] See you next time Figure 1 The aforementioned set of guide rope mechanisms 9 each includes a guide rope wheel frame fixing plate 91, a guide rope wheel frame 92 and a guide rope wheel 93. The guide rope wheel frame fixing plate 91 is fixed to the aforementioned front frame beam 1 by bolts. The guide rope wheel frame fixing plate 91 is L-shaped. The guide rope wheel frame 92 is preferably fixed to the lower part of the guide rope wheel frame fixing plate 91 by welding, and the guide rope wheel frame 92 is formed with a guide rope wheel cavity 921. The guide rope wheel 93 is rotatably arranged in the guide rope wheel cavity 921 through the guide rope wheel shaft, and the aforementioned obstacle removal traction rope 58 passes through the aforementioned guide rope wheel 93.

[0035] The applicant needs to explain that: if the aforementioned traction rope limiting mechanism 8 and a set of guide rope mechanisms 9 are transferred to Figure 1The rear of the position state shown is respectively provided with the rear side plate 43 of the fixing frame and the rear beam 2 of the frame as the carrier, then it is undoubtedly an equivalent technical means and still belongs to the technical connotation scope disclosed by the present invention.

[0036] A pair of traction rope guide roller shaft matching holes 635 are respectively provided at the upper and lower parts of the aforementioned rope guide roller support frame 63 and at corresponding positions. The aforementioned pair of traction rope guide rollers 634 are each rotatably arranged in the middle of a pair of traction rope guide roller shafts 6343 through traction rope guide roller bearings 6342, and the upper and lower ends of the pair of traction rope guide roller shafts 6343 are respectively matched with the aforementioned traction rope guide roller shaft matching holes 635.

[0037] A rope-pulling roller support frame articulation shaft mating hole 636 is provided at the center position of the upper and lower parts of the aforementioned rope-pulling roller support frame 63, and a rope-pulling roller support frame right fixed connecting beam articulation shaft mating hole 653 is provided at the center position of the upper and lower parts of the aforementioned support seat fixing frame right fixed connecting beam 65, the support seat fixing frame right fixed connecting beam articulation shaft mating hole 653 corresponds to the aforementioned rope-pulling roller support frame articulation shaft mating hole 636, and a pair of rope-pulling frame articulation ears 672 extend from the right end of the aforementioned rope-pulling rope frame 67, and a rope-pulling frame articulation ear shaft 672 is provided on each of the pair of rope-pulling rope frame articulation ears 672, and the rope-pulling rope frame articulation ear shaft 6721 is articulated with the aforementioned support seat fixing frame right fixed connecting beam articulation shaft mating hole 653 and the rope-pulling roller support frame articulation shaft mating hole 636 at the same time.

[0038] A pair of rope-pulling roller support frame bolt holes 637 are respectively provided at both ends of the aforementioned rope-pulling roller support frame 63, a pair of bolt through holes 654 are respectively provided at both ends of the right fixed connecting beam 65 of the aforementioned support seat fixing frame and at positions corresponding to the pair of rope-pulling roller support frame bolt holes 637, and a pair of fixing block bolts 6311 are respectively provided on the aforementioned pair of rope-pulling roller support frame fixing blocks 631, and the pair of fixing block bolts 6311 pass through the pair of bolt through holes 654 and the pair of rope-pulling roller support frame bolt holes 637 in turn and are restricted by bolt restricting nuts screwed onto the pair of fixing block bolts 6311.

[0039] Depend on Figure 1As can be seen from the diagram: one end of the aforementioned obstacle clearing traction rope 58 is fixed to the winch shaft 53, the middle part is wrapped around the winch shaft 53 (i.e. "rope collection") or withdrawn from the winch shaft 53 (i.e. rope release), and the other end passes through the bottom of the rope guide wheel 68, the obstacle clearing traction rope limiting guide cavity 6341, the rope guide roller support frame rope guide through hole 633, the support seat fixing frame right fixed connecting beam rope guide hole 652, the second traction rope hole II442 of the right side plate of the fixing frame, the right side of the traction pulley guide rope groove 743 of the traction pulley 74, the first traction rope hole I441 of the right side plate of the fixing frame, between a pair of transverse limiting wheels 84, below the longitudinal limiting wheel 83 and each rope guide wheel 93 (also called "export wheel") of a group of rope guide mechanisms 9, and the hook or similar hanging object at the rope end is temporarily hung or temporarily stored on the front of the fire truck.

[0040] When it is necessary to clear obstacles, there are two types of obstacle clearing: one is clearing obstacles in front of the vehicle; the other is clearing obstacles at the rear of the vehicle. Taking the former clearing obstacles in front of the vehicle as an example, the end of the obstacle clearing traction rope 58, which is the end temporarily stored on the front of the vehicle, is removed from the front of the vehicle and fixed to the obstacle in front of the fire truck. In the process of leading the end of the obstacle clearing traction rope 58 out of the obstacle, the hydraulic oil motor 54 of the winch mechanism 5 works in the reverse direction, and the reducer 55 works in the same way, so that the obstacle clearing traction rope 58 is withdrawn from the winch shaft 53 (i.e., "winch") until the withdrawn obstacle clearing traction rope 58 is long enough to bind the obstacle. Then, the hydraulic oil motor works in the forward direction, the reducer 55 works in the same way, the winch shaft 53 rotates and the rope is retracted until the obstacle is dragged by the obstacle clearing traction rope 58 and is moved away with the assistance of the firefighters to ensure that the road is clear; taking the rear obstacle clearing as an example, the firefighters remove the upper lock plate latch 7221 and the lower lock plate latch 7321, rotate the free ends of the upper lock plate 72 and the lower lock plate 73 by an angle, open the upper lock plate latch slot 7111 and the lower lock plate latch slot 7121 respectively, and move the traction hook ring connecting seat 75, the traction pulley 74 and the traction hook ring 76 away from the pulley support frame 71 together when the winch shaft 53 is in the rope-retracting state, and fix the traction hook ring 76 to the obstacle at the rear of the vehicle by another rope or the like, and then the hydraulic oil motor 54 works as mentioned above, the reducer 55 drives the winch shaft 53 to retract the rope, and the obstacle is moved away in the same way as mentioned above. In this latter case, the hook at the aforementioned end of obstacle removal traction rope 58 needs to be fixed with the headstock. In addition, in aforementioned two kinds of obstacle removal situations particularly in the latter situation, traction can be significantly reduced due to the effect of traction sheave 74.

[0041] In summary, the technical solution provided by the present invention makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A traction and rescue device for a fire truck, the fire truck comprising a front frame beam (1) and a rear frame beam (2), the front frame beam (1) and the rear frame beam (2) being parallel to each other in the longitudinal direction; a rear bumper (3), the front left side and the rear left side of the rear bumper (3) being respectively fixedly connected to the front frame beam (1) and the rear frame beam (2) through a rear bumper fixed connecting arm (31); characterized in that The traction rescue device comprises a rope guide seat fixing frame (4), a winch mechanism (5), a rope guide mechanism (6), a pulley mechanism (7), a traction rope limiting mechanism (8) and a group of rope guide mechanisms (9). The rope guide seat fixing frame (4) is fixed between the right ends of the front frame beam (1) and the rear frame beam (2), and is also fixed to the opposite side of the rear bumper fixed connecting arm (31). The winch mechanism (5) is arranged on the rope guide mechanism (6), the rope guide mechanism (6) is fixed on the rope guide seat fixing frame (4), and the pulley mechanism (7) is arranged on the rope guide seat fixing frame (4). ), a traction rope limiting mechanism (8) is fixed to the front left end of the rope guide seat fixing frame (4), a group of rope guide mechanisms (9) are located on the left side of the traction rope limiting mechanism (8) and are fixed to the front beam (1) of the vehicle frame in a spaced state; the rope guide seat fixing frame (4) comprises a fixing frame bottom plate (41), a fixing frame front side plate (42), a fixing frame rear side plate (43), a fixing frame right side plate (44) and a shielding cross beam (45), the fixing frame bottom plate (41) is fixed between the lower parts of the opposite sides of the fixing frame front side plate (42) and the fixing frame rear side plate (43) The upper part of the front side plate (42) of the fixing frame is fixed to the lower part of the front right end of the front beam (1) of the vehicle frame, the upper part of the rear side plate (43) of the fixing frame is fixed to the lower part of the rear right end of the rear beam (2) of the vehicle frame, the right side plate (44) of the fixing frame is fixed between the right sides of the front side plate (42) and the right side plate (43) of the fixing frame facing each other at a position corresponding to the right side of the length direction of the bottom plate (41) of the fixing frame, and a first traction rope hole I (441) of the right side plate of the fixing frame and a second traction rope hole II (441) of the right side plate of the fixing frame are provided on the right side plate (44) of the fixing frame. 442), a shielding cross beam (45) corresponds to the upper side of the right side plate (44) of the fixing frame in the length direction, and the front end of the shielding cross beam (45) is fixed to the right rear end of the front beam (1) of the frame, and the rear end of the shielding cross beam (45) is fixed to the right front end of the rear beam (2) of the frame, wherein the space formed by the fixing frame bottom plate (41), the fixing frame front side plate (42), the fixing frame rear side plate (43) and the fixing frame right side plate (44) together constitutes a rope guiding mechanism cavity (46), and the left side and the upper part of the rope guiding mechanism cavity (46) are open.

2. A traction and rescue device for a fire truck according to claim 1, characterized in that A front frame beam sub-beam (11) is fixed to the upper part of the length direction of the front frame beam (1), and a rear frame beam sub-beam (21) is fixed to the upper part of the length direction of the rear frame beam (2); a beam connecting crossbeam (12) is fixed between the right ends of the front frame beam sub-beam (11) and the rear frame beam sub-beam (21) facing each other; the left end of the rear bumper fixing connecting arm (31) located on the left side of the front end of the rear bumper (3) is fixed to the front side of the right end of the front frame beam (1), and the rear bumper located on the left side of the rear end of the rear bumper (3) is fixed to the front side of the right end of the front frame beam (1), and the rear bumper (3) is fixed to the left side of the rear end of the rear bumper (3). The left end of the lever fixed connecting arm (31) is fixed to the rear side of the right end of the rear beam (2) of the frame; the rope guiding mechanism (6) together with the winch mechanism (5) are arranged on the bottom plate (41) of the fixing frame at a position corresponding to the rope guiding mechanism cavity (46); the pulley mechanism (7) is arranged on the right side of the right side plate (44) of the fixing frame at a position between the first traction rope hole I (441) of the right side plate of the fixing frame and the second traction rope hole II (442) of the right side plate of the fixing frame; the traction rope limiting mechanism (8) is fixed to the left end of the front side plate (42) of the fixing frame.

3. A traction and rescue device for a fire truck according to claim 2, characterized in that The rope guiding mechanism (6) comprises a winch front support seat fixing frame (61), a winch rear support seat fixing frame (62), a rope guiding roller supporting frame (63), a support seat fixing frame left fixed connecting cross beam (64), a support seat fixing frame right fixed connecting cross beam (65), a rope guiding frame pulley (66), a rope guiding frame (67) and a rope guiding wheel (68); the winch front support seat fixing frame (61) is fixed to the fixing frame bottom plate (41) in the rope guiding mechanism cavity (46); the winch rear support seat fixing frame (62) is also fixed to the fixing frame bottom plate (41) in the rope guiding mechanism cavity (46) at a position corresponding to the rear of the winch front support seat fixing frame (61); the support seat fixing frame right fixed connecting cross beam (65) is fixed to the winch front support seat fixing frame A rope-pulling roller support frame matching cavity (651) is formed between the right end of the fixing frame (61) and the right end of the winch rear support frame fixing frame (62) on the right side of the length direction of the right fixed connecting beam (65) of the support frame fixing frame, and a rope-pulling roller support frame right fixed connecting beam rope-pulling hole (652) is provided in the middle of the length direction of the right fixed connecting beam (65) of the support frame fixing frame. The rope-pulling roller support frame (63) is arranged in the rope-pulling roller support frame matching cavity (651) and is fixed to the right fixed connecting beam (65) of the support frame fixing frame through a rope-pulling roller support frame fixing block (631) arranged on the right side surface of the right fixed connecting beam (65) of the support frame fixing frame. A rope-pulling roller support frame cavity (632) is formed on the right side and along the length direction of the rope-pulling roller support frame (63), and a rope-pulling roller support frame rope-pulling through hole (633) is provided in the middle of the length direction of the rope-pulling roller support frame (63), and the rope-pulling roller support frame rope-pulling through hole (633) corresponds to the rope-pulling hole (652) of the right fixed connecting crossbeam of the support seat fixing frame. A pair of traction rope guide rollers (634) are rotatably arranged in a longitudinally parallel state in the rope-pulling roller support frame cavity (632) of the rope-pulling roller support frame (63), and the pair of traction rope guide rollers (634) are respectively located on both sides of the rope-pulling roller support frame rope-pulling through hole (633), and the pair of traction rope guide rollers (634) are arranged between The space is constituted as a limit guide cavity (6341) for the obstacle clearing traction rope. The left fixed connecting cross beam (64) of the support seat fixing frame is fixed between the left ends of the winch front support seat fixing frame (61) and the winch rear support seat fixing frame (62) facing each other. The rope guide frame pulley (66) is rotatably arranged on the rope guide frame pulley seat (661) at a position corresponding to the lower part of the left fixed connecting cross beam (64) of the support seat fixing frame. The rope guide frame pulley seat (661) is fixed to the left end of the rope guide frame (67). The right end of the rope guide frame (67) is hinged to the middle part of the length direction of the right fixed connecting cross beam (65) of the support seat fixing frame and the rope guide roller support frame (63). A rope guide wheel cavity (671) is formed in the middle part of the rope guide frame (67).The rope pulley (68) is rotatably arranged in the rope pulley cavity (671) via the rope pulley shaft (681); the winch mechanism (5) is arranged between the upper parts of the winch front support seat fixing frame (61) and the winch rear support seat fixing frame (62).

4. A traction and rescue device for a fire truck according to claim 3, characterized in that The winch mechanism (5) comprises a winch front support (51), a winch rear support (52), a winch shaft (53), a hydraulic oil motor (54), a reducer (55), an upper rope stop roller (56), a right rope stop plate (57) and an obstacle removal traction rope (58). The bottom of the winch front support (51) is fixed to the top of the winch front support bracket fixing frame (61), the bottom of the winch rear support (52) is fixed to the top of the winch rear support bracket fixing frame (62), the front end of the winch shaft (53) is rotatably supported on the winch front support (51), and the rear end is rotatably supported on the winch rear support (52). The hydraulic oil motor (54) is connected to the fire truck on-board hydraulic oil circuit control system. The hydraulic oil motor (54) is fixed on the front side of the winch front support (51) in a horizontal position and is control-connected to the reducer (55), while the reducer (55) is fixed on the rear side of the winch rear support (52) and is transmission-connected to the winch shaft (53). The upper rope stop roller (56) is in a horizontal position corresponding to the upper left of the winch shaft (53). The front end of the upper rope stop roller (56) is rotatably supported on the upper rope stop roller front bracket (561), and the upper rope stop roller front bracket (561) is fixed to the upper front side of the upper rope stop roller bracket seat (5611). The rear end of the upper rope stop roller (56) is rotatably supported on the upper rope stop roller rear bracket (562). The rear bracket (562) is fixed to the rear side of the upper rope-blocking roller bracket seat (5611), and the lower part of the upper rope-blocking roller bracket seat (5611) is fixed between the left ends of the winch front support (51) and the winch rear support (52) facing each other. The right rope-blocking plate (57) corresponds to the right side of the winch shaft (53) in a horizontal state, and the front end of the right rope-blocking plate (57) is fixed to the right side of the winch front support (51), and the rear end of the right rope-blocking plate (57) is fixed to the right side of the winch rear support (52). One end of the obstacle-clearing traction rope (58) is fixed on the winch shaft (53), the middle part is wound around or withdrawn from the winch shaft (53), and the other end is constituted as a free end and passes through the said An obstacle clearing traction rope hook is fixed behind the rope pulley (68), the obstacle clearing traction rope limiting guide cavity (6341), the rope pulley roller support frame rope pulley through hole (633), the right fixed connecting beam rope pulley hole (652) of the support seat fixing frame, the second traction rope hole II (442) of the right side plate of the fixing frame opened on the right side plate (44) of the fixing frame, the pulley mechanism (7), the first traction rope hole I (441) of the right side plate of the fixing frame opened on the right side plate (44) of the fixing frame, the traction rope limiting mechanism (8) and the group of guide rope mechanisms (9). When in a non-obstacle clearing state, the obstacle clearing traction rope hook is temporarily hooked on the front part of the fire truck.

5. A traction and rescue device for a fire truck according to claim 4, characterized in that The pulley mechanism (7) comprises a pulley support frame (71), an upper locking plate (72), a lower locking plate (73), a traction pulley (74), a traction hook connection seat (75) and a traction hook (76); the pulley support frame (71) is fixed to the right side surface of the right side plate (44) of the fixing frame in a longitudinal state at a position corresponding to the first traction rope hole I (441) of the right side plate of the fixing frame and the second traction rope hole II (442) of the right side plate of the fixing frame, and an upper locking plate hinge seat (711) and a lower locking plate hinge seat (712) are horizontally fixed on the right side of the pulley support frame (71) in a state perpendicular to the pulley support frame (71); the upper locking plate hinge seat (711) and the lower locking plate hinge seat (712) correspond to each other up and down, and the upper locking plate hinge seat (711) and the lower locking plate hinge seat (712) correspond to each other up and down, and the upper locking plate hinge seat (711) and the lower locking plate hinge seat (712) are connected to each other in a longitudinal state. An upper locking plate latch groove (7111) is provided at the rear right end of the hinge seat (711), and a lower locking plate latch groove (7121) is provided at the rear right end of the lower locking plate hinge seat (712) and at a position corresponding to the upper locking plate latch groove (7111). The upper locking plate latch groove (7111) and the lower locking plate latch groove (7121) are communicated with the outside. One end of the upper locking plate (72) is hinged to the upper locking plate hinge seat (711) at a position located on one side of the upper locking plate latch groove (7111) through the upper locking plate hinge pin shaft (721), and the other end is constituted as a free end and is provided with an upper locking plate latch hole (722). An upper locking plate latch pin (7221) is provided on the upper locking plate latch hole (722). The lower end of the lower lock plate (73) is fixedly connected or released from the fixed connection with the upper lock plate latch connection hole (71112) which is provided on the upper lock plate hinge seat (711) and located on the other side of the upper lock plate latch groove (7111); one end of the lower lock plate (73) is hinged to the lower lock plate hinge seat (712) at a position located on one side of the lower lock plate latch groove (7121) through the lower lock plate hinge pin shaft (731); the other end is constituted as a free end and is provided with a lower lock plate latch hole (732); a lower lock plate latch (7321) is provided on the lower lock plate latch hole (732); the upper part of the lower lock plate latch pin (7321) is connected to the lower lock plate latch hole (7121) which is provided on the lower lock plate hinge seat (712) and located on the other side of the lower lock plate latch groove (7121). The pin connection hole (7122) is fixedly connected or released from the fixed connection, the traction pulley (74) is rotatably arranged on the traction pulley shaft (742) through the traction pulley bearing (741), the upper end and the lower end of the traction pulley shaft (742) are simultaneously matched or released with the upper locking plate pin slot (7111) and the lower locking plate pin slot (7121), and are simultaneously restricted or released by the upper locking plate (72) and the lower locking plate (73), one end of the traction hook ring connecting seat (75) is rotatably arranged on the traction pulley shaft (742) at a position corresponding to the upper and lower parts of the traction pulley (74), and is restricted by a limiting nut (751), and one end of the traction hook ring connecting seat (75) is formed with a traction pulley cavity (752),One side of the traction pulley (74) corresponds to the traction pulley cavity (752), and the other end corresponds to between the upper locking plate hinge seat (711) and the lower locking plate hinge seat (712). A traction hook hinge ear (753) extends from the other end of the traction hook connection seat (75). A traction hook pin hole (7531) is provided on the traction hook hinge ear (753). The traction hook (76) is connected or disconnected with the traction hook hinge ear (753) at a position corresponding to the traction hook pin hole (7531) through the traction hook pin (761); the obstacle removal traction rope (58) is sleeved on the traction pulley (74).

6. A traction and rescue device for a fire truck according to claim 4, characterized in that The traction rope limiting mechanism (8) comprises a transverse limiting wheel frame (81), a longitudinal limiting wheel frame (82), a longitudinal limiting wheel (83) and a pair of transverse limiting wheels (84); a pair of transverse limiting wheel frame fixed folding edges (811) are formed on the front side of the transverse limiting wheel frame (81), and a transverse limiting wheel frame left folding edge (812) is formed on the upper left side of the transverse limiting wheel frame (81); the pair of transverse limiting wheel frame fixed folding edges (811) are fixed to the fixed frame front side plate (42) at a position corresponding to the rear left end of the fixed frame front side plate (42), and a transverse limiting wheel cavity (813) is formed in the middle part of the transverse limiting wheel frame (81) in the height direction; a longitudinal limiting wheel cavity (821) is formed in the middle part of the longitudinal limiting wheel frame (82) and passes through from the left side to the right side of the longitudinal limiting wheel frame (82); on the right side of the longitudinal limiting wheel frame (82) and at the positions corresponding to the longitudinal limiting wheel cavities ( A longitudinal limiting wheel frame fixing fold (822) is formed at the front and rear sides of the right cavity opening of the lateral limiting wheel frame, the upper end of the longitudinal limiting wheel frame fixing fold (822) is fixed to the left fold (812) of the lateral limiting wheel frame, and the lower end is fixed to the fixing ear (421) of the fixing frame front side plate extending and formed at the lower part of the left end of the fixing frame front side plate (42), the longitudinal limiting wheel (83) is rotatably arranged in the longitudinal limiting wheel cavity (821) through the longitudinal limiting wheel pin shaft (831), and a traction rope limiting stop rod (832) is arranged below the longitudinal limiting wheel (83), a pair of lateral limiting wheels (84) are rotatably arranged in the lateral limiting wheel cavity (813) through the lateral limiting wheel pin shaft (841), and the obstacle clearing traction rope (58) passes through the pair of lateral limiting wheels (84) and between the longitudinal limiting wheel (83) and the traction rope limiting stop rod (832) in sequence.

7. The traction and rescue device of a fire truck according to claim 4, characterized in that The group of guide rope mechanisms (9) each includes a guide rope wheel frame fixing plate (91), a guide rope wheel frame (92) and a guide rope wheel (93), the guide rope wheel frame fixing plate (91) is fixed to the front beam (1) of the vehicle frame, the guide rope wheel frame (92) is fixed to the lower part of the guide rope wheel frame fixing plate (91), and the guide rope wheel frame (92) is formed with a guide rope wheel cavity (921), the guide rope wheel (93) is rotatably arranged in the guide rope wheel cavity (921) through the guide rope wheel shaft, and the obstacle clearing traction rope (58) passes through the guide rope wheel (93).

8. The traction and rescue device of a fire truck according to claim 3, characterized in that A pair of traction rope guide roller shaft matching holes (635) are respectively provided at the upper and lower parts of the rope guide roller support frame (63) and at corresponding positions. The pair of traction rope guide rollers (634) are rotatably arranged in the middle part of a pair of traction rope guide roller shafts (6343) through traction rope guide roller bearings (6342), and the upper and lower ends of the pair of traction rope guide roller shafts (6343) are respectively matched with the traction rope guide roller shaft matching holes (635).

9. The traction and rescue device of a fire truck according to claim 3, characterized in that A rope-pulling roller support frame articulation shaft mating hole (636) is provided at the center position of the upper and lower parts of the rope-pulling roller support frame (63), and a rope-pulling roller support frame right fixed connecting beam articulation shaft mating hole (653) is provided at the center position of the upper and lower parts of the right fixed connecting beam (65) of the support seat fixing frame. The articulation shaft mating hole (653) of the right fixed connecting beam of the support seat fixing frame corresponds to the articulation shaft mating hole (636) of the rope-pulling roller support frame. A pair of rope-pulling frame articulation ears (672) extend from the right end of the rope-pulling frame (67), and a rope-pulling frame articulation ear shaft (6721) is provided on each of the pair of rope-pulling frame articulation ears (672). The rope-pulling frame articulation ear shaft (6721) is articulated with the articulation shaft mating hole (653) of the right fixed connecting beam of the support seat fixing frame and the articulation shaft mating hole (636) of the rope-pulling roller support frame at the same time.

10. The traction and rescue device of a fire truck according to claim 3, characterized in that A pair of rope-pulling roller support frame bolt holes (637) are respectively provided at both ends of the rope-pulling roller support frame (63); a pair of bolt through holes (654) are respectively provided at both ends of the right fixed connecting beam (65) of the support seat fixing frame and at positions corresponding to the pair of rope-pulling roller support frame bolt holes (637); a pair of fixing block bolts (6311) are respectively provided on the pair of rope-pulling roller support frame fixing blocks (631); the pair of fixing block bolts (6311) pass through the pair of bolt through holes (654) and the pair of rope-pulling roller support frame bolt holes (637) in sequence and are limited by bolt limiting nuts screwed onto the pair of fixing block bolts (6311).

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