Double-cylinder lifting dump truck carriage bottom plate positioning tool and positioning method

Abstract

The invention provides a double-cylinder lifting dump truck carriage bottom plate positioning tool and a positioning method, and belongs to the technical field of dump truck carriage bottom plate assembly.The method comprises the steps that firstly, a left side hydraulic cylinder fixing support and a right side hydraulic cylinder fixing support are transversely positioned through positioning angle steel, two first positioning plates and first positioning sleeves installed on the two first positioning plates; a first supporting beam and a second supporting beam at a hydraulic cylinder upper fixing seat are longitudinally positioned, and a left side hydraulic cylinder fixing support and a right side hydraulic cylinder fixing support are longitudinally positioned through the longitudinally positioned first supporting beam; and then parts influencing the key size of the bottom plate assembly are positioned through a hydraulic cylinder upper fixing seat positioning shaft, a bottom plate main positioning tool and a rear overturning positioning shaft, finally, the relative position precision between left and right rear overturning points and left and right hinge points of the hydraulic cylinder is accurately guaranteed, and therefore it is guaranteed that the hydraulic cylinder can be normally installed and lifted.

Description

Technical Field

[0001] The invention belongs to the technical field of dump truck compartment floor assembly, and in particular relates to a double-cylinder lifting dump truck compartment floor positioning tool and a positioning method. Background Art

[0002] At present, dump trucks use hydraulic systems to lift and lower the car body around the rear flip center. Therefore, the relative position accuracy of the hydraulic cylinder and the rear flip center is a key factor in determining the normal installation and lifting of the dump truck hydraulic cylinder.

[0003] For a double-cylinder lifting dump truck, the rear flip device consists of a support seat and a rear flip seat, which are fixed on the frame longitudinal beam and the floor longitudinal beam respectively; the upper hinge shaft and the lower hinge shaft of the hydraulic cylinder are hinged on the upper fixed seat and the lower hinge seat respectively, the upper fixed seat is welded on the car floor, and the lower hinge seat is bolted on the frame longitudinal beam. In order to ensure the normal installation and lifting of the hydraulic cylinder, the relative position accuracy of the left and right rear flip points and the left and right hinge points of the hydraulic cylinder must be guaranteed to avoid the problem of the left and right rear flip seats not being aligned, the left and right upper fixed seats of the hydraulic cylinder not being aligned, or the rear flip seat center axis not being parallel to the hydraulic cylinder upper hinge axis axis, thereby avoiding the phenomenon that the longitudinal center of the car body deviates from the center of the frame during lifting and lowering.

[0004] At present, there are two factors that affect the relative position accuracy of the left and right rear flip points and the left and right hinge points of the hydraulic cylinder: ① Figure 1 As shown in the figure, the horizontal distance L1 and the vertical distance H1 between the central axis of the rear flip seat in the rear flip device and the axis of the hinge shaft of the fixed seat on the hydraulic cylinder, the horizontal distance L2 and the vertical distance H2 between the central axis of the rear flip seat in the rear flip device and the axis of the hinge shaft of the lower hinge seat of the hydraulic cylinder. Considering that all the mounting holes on the frame longitudinal beam are punched by large-scale stamping equipment or laser cut, they can basically meet the tolerance requirements of the horizontal distance L2 and the vertical distance H2; considering that the rear flip seat at the rear flip device and the upper fixed seat at the hydraulic cylinder are welded to the bottom plate, ensuring the tolerance of the horizontal distance L1 and the vertical distance H1 is the key factor for the normal installation of the hydraulic cylinder; ② The parallelism of the central axis of the rear flip seat at the rear flip device and the axis of the hinge shaft of the fixed seat on the hydraulic cylinder.

[0005] There are many kinds of cylinder support positioning fixtures for dump trucks, but all of them have certain defects. For example, the Chinese patent with application number 202120399341.6 has provided a single-lift cylinder support positioning fixture for wide-body dump trucks. The fixture realizes the position positioning of the cylinder support welded on the front plate of the compartment through the hinged support ears and flanges welded on the positioning frame. Although this fixture can solve some of the existing technical problems to a certain extent, the following problems still exist: First, the rear flip seat and the cylinder support are both positioned relative to the front end of the base plate. Affected by the cumulative error, the relative position accuracy of the four points of the rear flip seat center and the cylinder support center cannot be guaranteed. Therefore, although it can reduce the probability of the occurrence of the existing technical problems, it cannot completely solve the problem; second, the fixture is only suitable for the positioning of the hydraulic cylinder support welded on the front plate, and cannot realize the positioning of the double-cylinder lifting cylinder support welded on the base plate. Summary of the invention

[0006] The purpose of the present invention is to propose and design a double-cylinder lifting dump truck compartment floor positioning tool and positioning method to solve the above problem and ensure that the hydraulic cylinder can be installed and lifted normally, in view of the problem that the existing positioning tool cannot effectively ensure the relative position accuracy of the left and right rear turning points and the left and right hinge points of the hydraulic cylinder, and affects the normal installation and lifting of the hydraulic cylinder.

[0007] In order to solve the above technical problems, on the one hand, the present invention provides a double-cylinder lifting dump truck compartment floor positioning tool, which includes a hydraulic cylinder upper fixed seat positioning tool, two hydraulic cylinder upper fixed seat positioning shafts, a floor main positioning tool, and a rear flip positioning shaft; the hydraulic cylinder upper fixed seat positioning tool includes a base, one side of the base is sequentially provided with a positioning angle steel, a first positioning plate 1, and a second positioning plate 1 in a straight line direction, the middle of the two positioning plates 1 are penetrated by a through hole 1, each through hole is installed with a positioning sleeve 1, and the two positioning sleeves are coaxially arranged; the floor main positioning tool It includes a positioning frame, guide plates are arranged on the left and right sides of the positioning frame, two hydraulic cylinder upper fixed seat positioning plates are arranged at the front end of the positioning frame, the middle parts of the two hydraulic cylinder upper fixed seat positioning plates are penetrated by through holes 2, the two through holes 2 are coaxially arranged and can be plugged with the hydraulic cylinder upper fixed seat positioning shaft; a positioning plate 2 is arranged at the rear end of the positioning frame, two rear flip positioning beams are arranged at the upper end of the positioning frame, the middle parts of the two rear flip positioning beams are penetrated by through holes 3, a positioning sleeve 2 is installed at each of the three through holes, the two positioning sleeves 2 are coaxially arranged and can be plugged with the rear flip positioning shaft.

[0008] At this time, on the one hand, the present invention can first use the hydraulic cylinder upper seat positioning tooling to separately position the key dimensions of the hydraulic cylinder upper seat, that is, use the positioning angle steel to laterally position the first support beam and the second support beam at the hydraulic cylinder upper seat, and use the two positioning plates and the positioning sleeve one installed at the two positioning plates to laterally position the left hydraulic cylinder fixed support and the right hydraulic cylinder fixed support in the hydraulic cylinder upper seat, and longitudinally position the first support beam and the second support beam in the hydraulic cylinder upper seat, and longitudinally position the left hydraulic cylinder fixed support and the right hydraulic cylinder fixed support through the longitudinally positioned first support beam; on the other hand, after the key dimensions of the hydraulic cylinder upper seat are positioned, the hydraulic cylinder upper seat positioning axis and the base plate main positioning tooling, and the rear flip positioning axis can be used to position the base plate main positioning tooling. The parts with key dimensions are positioned, that is, the longitudinal and lateral positions of the positioning frame are positioned by the cooperation of the positioning plate 2 and the guide plate with the bottom plate longitudinal beam and the rear frame at the bottom plate assembly; the rear flip seat at the bottom plate longitudinal beam is axially positioned by the cooperation of the positioning sleeve 2 and the rear flip positioning axis installed at the rear flip positioning beam on the positioning frame, and the lateral spacing between the outer flip plate and the inner flip plate at each rear flip seat is positioned to ensure the coaxiality of the left and right rear flip seats; the longitudinal distance between the hydraulic cylinder upper fixed seat and the left and right rear flip seats is positioned by the cooperation of the hydraulic cylinder upper fixed seat positioning plate installed on the positioning frame and the hydraulic cylinder upper fixed seat positioning axis, and finally the relative position accuracy between the left and right rear flip points and the left and right hinge points of the hydraulic cylinder is accurately guaranteed, thereby ensuring that the hydraulic cylinder can be installed and lifted normally.

[0009] Furthermore, the length of the positioning sleeve 1 is equal to the distance between the first fixed plate and the second fixed plate of a single hydraulic cylinder fixed support in the hydraulic cylinder upper fixed seat at the bottom plate assembly of the double-cylinder lift dump truck, and the center distance between the two positioning plates 1 is equal to the center distance between the left hydraulic cylinder fixed support and the right hydraulic cylinder fixed support at the bottom plate assembly of the double-cylinder lift dump truck, so as to ensure that the positioning sleeve 1 can locate the distance and coaxiality between the first fixed plate and the second fixed plate at the hydraulic cylinder upper fixed seat, and the positioning plate 1 can locate the relative position between the left hydraulic cylinder fixed support and the right hydraulic cylinder fixed support at the bottom plate assembly of the double-cylinder lift dump truck.

[0010] Furthermore, the length of the two positioning plates is equal to the longitudinal length of the hydraulic cylinder fixed support at the bottom plate assembly of the double-cylinder lift dump truck. In this way, the present invention can position the longitudinal positions of the first support beam and the second support beam of the hydraulic cylinder fixed seat at the bottom plate assembly of the double-cylinder lift dump truck by cooperating between the two positioning plates and the first support beam and the second support beam located on both sides of the hydraulic cylinder fixed seat at the bottom plate assembly of the double-cylinder lift dump truck, that is, by placing the first support beam and the second support beam on both sides of the two positioning plates.

[0011] Furthermore, the positioning frame includes two parallel longitudinal beams, at least three cross beams are evenly connected between the two longitudinal beams along the length direction, the frontmost cross beam and the rearmost cross beam are flush with the ends of the longitudinal beams, the hydraulic cylinder upper fixed seat positioning plate and positioning plate 2 are respectively installed on the frontmost cross beam and the rearmost cross beam, and the guide plate and the rear flip positioning beam are installed on the two longitudinal beams.

[0012] Furthermore, the rear flip positioning beam is installed on the upper side of the corresponding longitudinal beam, the guide plate is installed on the outer side of the corresponding longitudinal beam, and the lower end of the guide plate is lower than the lowest end of the longitudinal beam; the positioning plate of the fixed seat on the hydraulic cylinder is installed on the lower side of the corresponding cross beam, and the positioning plate 2 is installed on the outer side of the corresponding cross beam, and the lower end of the positioning plate 2 is lower than the lowest end of the cross beam, so as to ensure that it can cooperate and position with the rear frame in the bottom plate assembly.

[0013] Furthermore, a vertical surface and an inclined guide surface are sequentially provided on one side of the guide plate from top to bottom, the upper part of the vertical surface is fixedly connected to the outer side surface of the corresponding longitudinal beam, the lower part of the vertical surface is located below the longitudinal beam, the inclined guide surface is inclined in a direction away from the longitudinal beam, and the angle between the inclined guide surface and the vertical surface is α, 120°<α<170°.

[0014] Furthermore, the distance between the vertical surface of the guide plate at the leftmost longitudinal beam and the vertical surface of the guide plate at the rightmost longitudinal beam is equal to the distance between the outermost sides of the two bottom plate longitudinal beams at the bottom plate assembly, so that the positioning frame can be directly clamped on the outer side of the bottom plate longitudinal beam through the guide plate.

[0015] Furthermore, the length of the second positioning sleeve is equal to the distance between the outer flip plate and the inner flip plate on a single rear flip seat at the floor assembly of the twin-cylinder lift dump truck, and the center distance between the two rear flip positioning beams is equal to the center distance between the two rear flip seats at the floor assembly of the twin-cylinder lift dump truck, so as to ensure that the second positioning sleeve can locate the distance between the outer flip plate and the inner flip plate at the rear flip seat, and the rear flip positioning beam can locate the relative position between the left rear flip seat and the right rear flip seat at the floor assembly of the twin-cylinder lift dump truck.

[0016] Furthermore, the axis of through hole three is parallel to the axis of through hole two, and the horizontal distance between the axis of through hole three and the axis of through hole two is equal to the horizontal distance between the central axis of the rear flip seat at the bottom plate assembly of the double-cylinder lift dump truck and the axis of the hinge shaft of the fixed seat on the hydraulic cylinder, and the vertical distance between the axis of through hole three and the axis of through hole two is equal to the vertical distance between the central axis of the rear flip seat at the bottom plate assembly of the double-cylinder lift dump truck and the axis of the hinge shaft of the fixed seat on the hydraulic cylinder, so as to ensure that it can accurately position the horizontal distance and vertical distance between the rear flip seat and the fixed seat on the hydraulic cylinder.

[0017] On the other hand, the present invention also provides a method for positioning the cabin floor of a double-cylinder lifting dump truck using the above-mentioned double-cylinder lifting dump truck cabin floor positioning tool, which comprises the following steps: S1. Position the key dimensions of the fixing seat on the hydraulic cylinder: S11. The first support beam at the fixed seat on the hydraulic cylinder is close to the positioning plate and the positioning angle; S12. The first fixing plate and the second fixing plate in the left hydraulic cylinder fixing support are respectively close to the two sides of one of the positioning sleeves and close to the first support beam; S13. The first fixing plate and the second fixing plate in the right hydraulic cylinder fixing support are respectively close to the two sides of another positioning sleeve and close to the first support beam; S14. Place the second support beam at the fixed seat on the hydraulic cylinder close to the positioning plate and the positioning angle steel; S15. First, weld the contact parts of the hydraulic cylinder upper fixing seat, then flip the hydraulic cylinder upper fixing seat 180° and weld the connecting plate; S2. Position the components that affect the key dimensions of the floor assembly: S21. First place the bottom plate longitudinal beam upward on the workbench, then place the bottom plate main positioning tool on the upper part of the bottom plate longitudinal beam, and flip the rear positioning beam upward, the second positioning plate abuts the rear frame of the bottom plate assembly, and the guide plate abuts the bottom plate longitudinal beam; S22. Position the rear flip seat; first, sequentially pass the rear flip positioning axis through the outer flip plate in the left rear flip seat, the second positioning sleeve on the left, the inner flip plate in the left rear flip seat, the inner flip plate in the right rear flip seat, the second positioning sleeve on the right, and the outer flip plate in the right rear flip seat, and then place the inner flip plates and outer flip plates at the two rear flip seats close to the inner and right sides of the corresponding floor longitudinal beams, respectively, and then weld the inner flip plates and outer flip plates at the two rear flip seats to the corresponding floor longitudinal beams; S23. Position the upper fixing seat of the hydraulic cylinder in the front-to-back direction and the up-down direction; first place the upper fixing seat of the hydraulic cylinder welded after step S1 between the two bottom plate longitudinal beams, then pass the positioning axis of the first upper fixing seat of the hydraulic cylinder through the first fixing plate in the left hydraulic cylinder fixing support, the positioning plate of the upper fixing seat of the hydraulic cylinder on the left, and the second fixing plate in the left hydraulic cylinder fixing support in sequence, and pass the positioning axis of the upper fixing seat of the second hydraulic cylinder through the second fixing plate in the right hydraulic cylinder fixing support, the positioning plate of the upper fixing seat of the hydraulic cylinder on the right, and the first fixing plate in the right hydraulic cylinder fixing support in sequence, and finally weld the contact portion between the upper fixing seat of the hydraulic cylinder and the bottom plate assembly.

[0018] It can be seen from the above technical scheme that the present invention has the following advantages: the present invention can ensure the coaxiality of the circular holes of the left and right fixed seats of the hydraulic cylinder and the coaxiality of the left and right rear flip seats through the combined use of the positioning tooling, and can ensure the horizontal distance and vertical distance from the rear flip center axis to the axis of the hinge shaft of the upper fixed seat of the hydraulic cylinder, and the parallelism of the rear flip center axis and the axis of the hinge shaft of the upper fixed seat of the hydraulic cylinder through the main positioning tooling of the bottom plate, thereby solving the technical defects existing in the prior art. Moreover, the present invention can also ensure the front and rear position of the rear flip seat relative to the rear frame through the rear flip positioning beam, positioning sleeve 2 and positioning plate 2 in the main positioning tooling of the bottom plate, thereby ensuring the dimensional accuracy of the length of the entire vehicle, especially for blue-plate vehicles, to prevent the entire vehicle from being too long. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the key dimensions of the double-cylinder hydraulic system; Figure 2 This is a schematic diagram of the cooperation between the main positioning tool of the bottom plate and the bottom plate in the present invention; Figure 3 It is a schematic diagram of the cooperation between the positioning tool of the upper fixing seat of the hydraulic cylinder and the upper fixing seat of the hydraulic cylinder in the present invention; Figure 4 It is a schematic diagram of the positioning tooling of the fixing seat on the hydraulic cylinder in the present invention; Figure 5 A top view of the positioning tool for the upper fixing seat of the hydraulic cylinder in the present invention; Figure 6 This is a structural diagram of the upper fixing seat of the hydraulic cylinder at the existing double-cylinder lifting dump truck floor assembly; Figure 7 This is a structural diagram of the left hydraulic cylinder fixed support at the floor assembly of an existing double-cylinder lifting dump truck; Figure 8 It is a bottom view of the upper fixing seat of the hydraulic cylinder at the floor assembly of the existing double-cylinder lifting dump truck; Fig. 9 This is a structural diagram of the main positioning tool for the bottom plate of the present invention; Fig.10 This is a schematic diagram of key dimensions of the main positioning tool for the bottom plate of the present invention; Fig.11 is a three-dimensional schematic diagram of the guide plate in the present invention; Fig.12 It is a side view of the guide plate in the present invention.

[0021] In the figure, 1, bottom plate assembly; 11, inner flip plate; 12, outer flip plate; 13, hydraulic cylinder upper fixing seat; 131, first support beam; 132, left hydraulic cylinder fixing support; 1321, first fixing plate; 1332, second fixing plate; 1333, connecting plate; 133, right hydraulic cylinder fixing support; 134, second support beam; 14, bottom plate longitudinal beam; 15, rear frame; 2, hydraulic cylinder upper fixing seat positioning shaft; 3, bottom plate main positioning tool; 31, crossbeam; 32 , hydraulic cylinder upper fixed seat positioning plate; 33, longitudinal beam; 34, positioning sleeve 2; 35, rear flip positioning beam; 36, positioning plate 2; 37, guide plate; 371, vertical surface; 372, inclined guide surface; 4, rear flip positioning axis; 5, hydraulic cylinder upper fixed seat positioning tooling; 51, base; 52, positioning sleeve 1; 53, positioning plate 1; 54, positioning angle steel; L1, horizontal distance between the center axis of the rear flip seat in the rear flip device and the axis of the hinge shaft of the hydraulic cylinder upper fixed seat; L2, rear The horizontal distance between the central axis of the rear flip seat in the flip device and the axis of the hinge shaft of the lower hinge seat of the hydraulic cylinder; L3, the horizontal distance between the axis of the through hole three and the axis of the through hole two; L4, the horizontal distance between the front side of the positioning plate two and the axis of the through hole three; L5, the horizontal distance between the central axis of the rear flip seat in the rear flip device and the rear side of the rear frame; H1, the vertical distance between the central axis of the rear flip seat in the rear flip device and the axis of the hinge shaft of the upper fixed seat of the hydraulic cylinder; H2, the vertical distance between the central axis of the rear flip seat in the rear flip device and the axis of the hinge shaft of the lower hinge seat of the hydraulic cylinder; H3, the vertical distance between the axis of the through hole three and the axis of the through hole two; A1, the center distance between the upper fixed seats of the two hydraulic cylinders at the bottom plate assembly of the double-cylinder lifting dump truck; A2, the center distance between the two positioning plates one; B1, the distance between the first fixed plate and the second fixed plate on the upper fixed seat of a single hydraulic cylinder at the bottom plate assembly of the double-cylinder lifting dump truck; B2, the length of the positioning sleeve one; α, the angle between the inclined guide surface and the vertical surface. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1 like Figure 1-Figure 12 As shown, this embodiment provides a double-cylinder lifting dump truck compartment floor positioning tooling, which includes a hydraulic cylinder upper fixed seat positioning tooling 5, two hydraulic cylinder upper fixed seat positioning shafts 2, a floor main positioning tooling 3, and a rear flip positioning shaft 4.

[0024] Among them, the hydraulic cylinder upper fixed seat positioning tool 5 includes a base 51, and one side of the base 51 is sequentially provided with a positioning angle steel 54, a first positioning plate 53, and a second positioning plate 53 in a straight line direction, and the middle part of the two positioning plates 53 is penetrated by a through hole 1, and a positioning sleeve 52 is installed at each through hole. The two positioning sleeves 52 are coaxially arranged, and the length of the two positioning sleeves 52 is equal to the distance between the first fixing plate 1321 and the second fixing plate 1332 of a single hydraulic cylinder fixed support on the hydraulic cylinder upper fixed seat 13 at the bottom plate assembly 1 of the double-cylinder lifting dump truck, the center distance between the two positioning plates 53 is equal to the center distance between the left hydraulic cylinder fixed support 132 and the right hydraulic cylinder fixed support 133 at the bottom plate assembly 1 of the double-cylinder lifting dump truck, and the length of the two positioning plates 53 is equal to the longitudinal length of the hydraulic cylinder fixed support at the bottom plate assembly 1 of the double-cylinder lifting dump truck.

[0025] In this way, the first support beam 131 and the second support beam 134 at the fixed seat on the hydraulic cylinder can be positioned laterally through the positioning angle steel 54, the left hydraulic cylinder fixed support 132 and the right hydraulic cylinder fixed support 133 can be positioned laterally through the two positioning plates 53 and the positioning sleeves 52 installed at the two positioning plates 53, and the first support beam 131 and the second support beam 134 at the fixed seat on the hydraulic cylinder can be positioned longitudinally, and the left hydraulic cylinder fixed support 132 and the right hydraulic cylinder fixed support 133 can be positioned longitudinally through the longitudinally positioned first support beam 131.

[0026] The bottom plate main positioning tool 3 includes a positioning frame, which includes two parallel longitudinal beams 33, at least three cross beams 31 are evenly connected between the two longitudinal beams 33 along the length direction, and the frontmost cross beam 31 and the rearmost cross beam 31 are flush with the ends of the longitudinal beams 33. Guide plates 37 are provided on the longitudinal beams 33 on the left and right sides of the positioning frame, and one side of the guide plate 37 is provided with a vertical surface 371 and an inclined guide surface 372 from top to bottom, and the upper part of the vertical surface 371 is fixedly connected to the outer side surface of the corresponding longitudinal beam 33, and the lower part of the vertical surface 371 is located below the longitudinal beam 33, and the inclined guide surface 372 is inclined in the direction away from the longitudinal beam 33, and the angle between the inclined guide surface 372 and the vertical surface 371 is α, 120°<α<170°, and the distance between the vertical surface 371 of the guide plate 37 at the leftmost longitudinal beam 33 and the vertical surface 371 of the guide plate 37 at the rightmost longitudinal beam 33 is equal to the distance between the outermost sides of the two bottom plate longitudinal beams 14 at the bottom plate assembly 1, so that the positioning frame can be directly clamped on the outer side of the bottom plate longitudinal beam 14 through the guide plate 37.

[0027] A rear flip positioning beam 35 is respectively arranged at the upper end of the two longitudinal beams 33 of the positioning frame, and a through hole three is penetrated in the middle of the two rear flip positioning beams 35, and a positioning sleeve 2 34 is installed at each through hole three, and the two positioning sleeves 2 34 are coaxially arranged and can be plugged with the rear flip positioning shaft 4, and the length of the two positioning sleeves 2 34 is equal to the distance between the outer flip plate 12 and the inner flip plate 11 on a single rear flip seat at the bottom plate assembly 1 of the double-cylinder lifting dump truck, and the center distance between the two rear flip positioning beams 35 is equal to the center distance between the two rear flip seats at the bottom plate assembly 1 of the double-cylinder lifting dump truck. Two hydraulic cylinder upper fixed seat positioning plates 32 are arranged on the lower side of the crossbeam 31 at the front end of the positioning frame, and the middle parts of the two hydraulic cylinder upper fixed seat positioning plates 32 are penetrated by through holes 2, and the two through holes 2 are coaxially arranged and can be plugged with the hydraulic cylinder upper fixed seat positioning shaft 2; and the axis of through hole 3 is parallel to the axis of through hole 2, and the horizontal distance between the axis of through hole 3 and the axis of through hole 2 is equal to the horizontal distance between the central axis of the rear flip seat at the bottom plate assembly 1 of the double-cylinder lifting dump truck and the axis of the hinge shaft of the hydraulic cylinder upper fixed seat, and the vertical distance between the axis of through hole 3 and the axis of through hole 2 is equal to the vertical distance between the central axis of the rear flip seat at the bottom plate assembly 1 of the double-cylinder lifting dump truck and the axis of the hinge shaft of the hydraulic cylinder upper fixed seat.

[0028] A second positioning plate 36 is arranged at the rear side of the crossbeam 31 at the rear end of the positioning frame, and the horizontal distance between the front side of the second positioning plate 36 and the axis of the through hole 3 is equal to the horizontal distance between the central axis of the rear flip seat in the rear flip device and the rear side of the rear frame 15, so as to position the rear flip seat front and back. In addition, since the front overhang, wheelbase and rear overhang of the whole vehicle are all fixed values, the dimension requirements of the length of the whole vehicle can be guaranteed by positioning the front and rear position of the rear flip seat.

[0029] In this way, after the key dimensions of the fixed seat on the hydraulic cylinder are positioned, the components that affect the key dimensions of the bottom plate assembly 1 can be positioned through the fixed seat positioning shaft 2 on the hydraulic cylinder and the bottom plate main positioning tooling 3 and the rear flip positioning shaft 4, that is, the longitudinal position and lateral position of the positioning frame are positioned through the cooperation of the positioning plate 2 36 and the guide plate 37 with the bottom plate longitudinal beam 14 and the rear frame 15 at the bottom plate assembly 1, and the rear flip seat is axially positioned by the bottom plate longitudinal beam 14 through the cooperation of the positioning sleeve 2 34 installed at the rear flip positioning beam 35 on the positioning frame, and the lateral spacing between the outer flip plate 12 and the inner flip plate 11 at each rear flip seat is positioned to ensure the coaxiality of the left and right rear flip seats; the longitudinal distance between the fixed seat on the hydraulic cylinder and the left and right rear flip seats is positioned through the cooperation of the hydraulic cylinder fixed seat positioning plate 32 installed on the positioning frame and the hydraulic cylinder fixed seat positioning shaft 2, and finally the relative position accuracy between the left and right rear flip points and the left and right hinge points of the hydraulic cylinder is accurately guaranteed, thereby ensuring that the hydraulic cylinder can be installed and lifted normally.

[0030] Embodiment 2 The second embodiment provides a method for positioning the floor of a double-cylinder lift dump truck compartment using the above-mentioned double-cylinder lift dump truck compartment floor positioning tool, which comprises the following steps: S1. Position the key dimensions of the fixing seat on the hydraulic cylinder: S11. The first support beam 131 at the fixed seat on the hydraulic cylinder is close to the positioning plate 53 and the positioning angle 54; S12. The first fixing plate 1321 and the second fixing plate 1332 in the left hydraulic cylinder fixing support 132 are respectively placed close to the sides of one of the positioning sleeves 52 and close to the first support beam 131; S13. The first fixing plate 1321 and the second fixing plate 1332 in the right hydraulic cylinder fixing support 133 are respectively close to the two sides of another positioning sleeve 52 and close to the first support beam 131; S14. The second support beam 134 at the fixed seat on the hydraulic cylinder is close to the positioning plate 53 and the positioning angle 54; S15. First, weld the contact parts of the hydraulic cylinder fixing seat, then flip the hydraulic cylinder fixing seat 180° and weld the connecting plate 1333; S2. Position the components that affect the key dimensions of the floor assembly 1: S21. First, place the bottom plate longitudinal beam 14 upward on the workbench, then place the bottom plate main positioning tool 3 on the upper part of the bottom plate longitudinal beam 14, and flip the rear positioning beam 35 upward, the positioning plate 36 abuts the rear frame 15 of the bottom plate assembly 1, and the guide plate 37 abuts the bottom plate longitudinal beam 14; S22. Position the rear flip seat; first, the rear flip positioning shaft 4 is sequentially passed through the outer flip plate 12 in the left rear flip seat, the left positioning sleeve 2 34, the inner flip plate 11 in the left rear flip seat, the inner flip plate 11 in the right rear flip seat, the right positioning sleeve 2 34, and the outer flip plate 12 in the right rear flip seat, and then the inner flip plates 11 and the outer flip plates 12 at the two rear flip seats are respectively pressed against the inner side and the right side of the corresponding bottom plate longitudinal beam 14, and then the inner flip plates 11 and the outer flip plates 12 at the two rear flip seats are welded to the corresponding bottom plate longitudinal beam 14; S23. Position the upper fixing seat of the hydraulic cylinder in the front-to-back direction and the up-down direction; first place the upper fixing seat of the hydraulic cylinder welded after step S1 between the two bottom plate longitudinal beams 14, then pass the first upper fixing seat positioning axis 2 of the hydraulic cylinder sequentially through the first fixing plate 1321 in the left hydraulic cylinder fixing support 132, the left hydraulic cylinder upper fixing seat positioning plate 32, and the second fixing plate 1332 in the left hydraulic cylinder fixing support 132, and the second upper fixing seat positioning axis 2 of the hydraulic cylinder sequentially through the second fixing plate 1322 in the right hydraulic cylinder fixing support 133, the right hydraulic cylinder upper fixing seat positioning plate 32, and the first fixing plate 1331 in the right hydraulic cylinder fixing support 133, and finally weld the contact portion between the upper fixing seat of the hydraulic cylinder and the bottom plate assembly 1.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0032] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-cylinder lifting dump truck compartment floor positioning tool, characterized in that: The invention comprises a hydraulic cylinder upper fixed seat positioning tool (5), two hydraulic cylinder upper fixed seat positioning shafts (2), a base plate main positioning tool (3), and a rear flip positioning shaft (4); the hydraulic cylinder upper fixed seat positioning tool (5) comprises a base (51), one side of the base (51) is provided with a positioning angle steel (54), a first positioning plate (53), and a second positioning plate (53) in sequence along a straight line direction, the middle of the two positioning plates (53) are penetrated by a through hole (1), each through hole is provided with a positioning sleeve (52), and the two positioning sleeves (52) are coaxially arranged; the base plate main positioning tool (3) comprises a positioning frame, the left and right sides of the positioning frame are provided with a positioning sleeve (52), and the two positioning sleeves (52) are coaxially arranged; Guide plates (37) are provided on both sides. Two hydraulic cylinder upper fixed seat positioning plates (32) are provided at the front end of the positioning frame. The middle parts of the two hydraulic cylinder upper fixed seat positioning plates (32) are penetrated by two through holes. The two through holes are coaxially arranged and can be plugged with the hydraulic cylinder upper fixed seat positioning shaft (2). A positioning plate (36) is provided at the rear end of the positioning frame. Two rear flip positioning beams (35) are provided at the upper end of the positioning frame. The middle parts of the two rear flip positioning beams (35) are penetrated by three through holes. A positioning sleeve (34) is installed at each of the three through holes. The two positioning sleeves (34) are coaxially arranged and can be plugged with the rear flip positioning shaft (4).

2. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 1 is characterized in that: The length of the positioning sleeve 1 (52) is equal to the distance between the first fixing plate (1321) and the second fixing plate (1332) of a single hydraulic cylinder fixing support in the hydraulic cylinder upper fixing seat (13) at the bottom plate assembly (1) of the double-cylinder lift dump truck, and the center distance between the two positioning plates 1 (53) is equal to the center distance between the left hydraulic cylinder fixing support (132) and the right hydraulic cylinder fixing support (133) at the bottom plate assembly (1) of the double-cylinder lift dump truck.

3. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 1 is characterized in that: The length of the two positioning plates (53) is equal to the longitudinal length of the hydraulic cylinder fixing support at the bottom plate assembly (1) of the double-cylinder lifting dump truck.

4. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 1 is characterized in that: The positioning frame comprises two longitudinal beams (33) arranged in parallel, at least three transverse beams (31) are evenly connected between the two longitudinal beams (33) along the length direction, the frontmost transverse beam (31) and the rearmost transverse beam (31) are flush with the ends of the longitudinal beams (33), the hydraulic cylinder upper fixed seat positioning plate (32) and the second positioning plate (36) are respectively installed on the frontmost transverse beam (31) and the rearmost transverse beam (31), and the guide plate (37) and the rear flip positioning beam are installed on the two longitudinal beams (33).

5. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 4 is characterized in that: The rear flip positioning beam (35) is mounted on the upper side of the corresponding longitudinal beam (33), the guide plate (37) is mounted on the outer side of the corresponding longitudinal beam (33), and the lower end of the guide plate (37) is lower than the lowermost end of the longitudinal beam (33); the hydraulic cylinder upper fixed seat positioning plate (32) is mounted on the lower side of the corresponding cross beam (31), the second positioning plate (36) is mounted on the outer side of the corresponding cross beam (31), and the lower end of the second positioning plate (36) is lower than the lowermost end of the cross beam (31).

6. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 5 is characterized in that: A vertical surface (371) and an inclined guide surface (372) are sequentially arranged on one side of the guide plate (37) from top to bottom. The upper portion of the vertical surface (371) is fixedly connected to the outer side surface of the corresponding longitudinal beam (33), the lower portion of the vertical surface (371) is located below the longitudinal beam (33), and the inclined guide surface (372) is inclined in a direction away from the longitudinal beam (33).

7. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 6 is characterized in that: The distance between the vertical surface (371) of the guide plate (37) at the leftmost longitudinal beam (33) and the vertical surface (371) of the guide plate (37) at the rightmost longitudinal beam (33) is equal to the distance between the outermost sides of the two bottom plate longitudinal beams (14) at the bottom plate assembly (1).

8. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 1 is characterized in that: The length of the second positioning sleeve (34) is equal to the distance between the outer flip plate (12) and the inner flip plate (11) on a single rear flip seat at the bottom plate assembly (1) of the double-cylinder lift dump truck, and the center distance between the two rear flip positioning beams (35) is equal to the center distance between the two rear flip seats at the bottom plate assembly (1) of the double-cylinder lift dump truck.

9. The double-cylinder lifting dump truck compartment floor positioning tool according to claim 1 is characterized in that: The axis of through hole three is parallel to the axis of through hole two, and the horizontal distance between the axis of through hole three and the axis of through hole two is equal to the horizontal distance between the center axis of the rear flip seat at the bottom plate assembly (1) of the double-cylinder lifting dump truck and the axis of the hinge shaft of the fixed seat on the hydraulic cylinder, and the vertical distance between the axis of through hole three and the axis of through hole two is equal to the vertical distance between the center axis of the rear flip seat at the bottom plate assembly (1) of the double-cylinder lifting dump truck and the axis of the hinge shaft of the fixed seat on the hydraulic cylinder.

10. A method for positioning a cabin floor of a double-cylinder lifting dump truck using the double-cylinder lifting dump truck cabin floor positioning tool as described in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Position the key dimensions of the fixing seat on the hydraulic cylinder: S11. The first support beam (131) at the fixed seat on the hydraulic cylinder is close to the positioning plate (53) and the positioning angle steel (54); S12. The first fixing plate (1321) and the second fixing plate (1332) of the left hydraulic cylinder fixing support (132) are respectively placed close to the two sides of one of the positioning sleeves (52) and close to the first support beam (131); S13. The first fixing plate (1321) and the second fixing plate (1332) of the right hydraulic cylinder fixing support (133) are respectively placed close to the two sides of another positioning sleeve (52) and close to the first support beam (131); S14. Place the second support beam (134) at the fixed seat on the hydraulic cylinder close to the positioning plate (53) and the positioning angle steel (54); S15. First, weld each contact part of the upper fixing seat of the hydraulic cylinder, then flip the upper fixing seat of the hydraulic cylinder 180°, and weld the connecting plate (1333); S2. Position the components that affect the critical dimensions of the floor assembly (1): S21. First, place the bottom plate longitudinal beam (14) upward on the workbench, then place the bottom plate main positioning tool (3) on the upper part of the bottom plate longitudinal beam (14), and make the rear flip positioning beam (35) face upward, the second positioning plate (36) abuts against the rear frame (15) of the bottom plate assembly (1), and the guide plate (37) abuts against the bottom plate longitudinal beam (14); S22. Position the rear flip seat; first, the rear flip positioning shaft (4) is sequentially passed through the outer flip plate (12) in the left rear flip seat, the second positioning sleeve (34) on the left side, the inner flip plate (11) in the left rear flip seat, the inner flip plate (11) in the right rear flip seat, the second positioning sleeve (34) on the right side, and the outer flip plate (12) in the right rear flip seat, and then the inner flip plates (11) and the outer flip plates (12) at the two rear flip seats are respectively pressed against the inner side and the right side of the corresponding bottom plate longitudinal beam (14), and then the inner flip plates (11) and the outer flip plates (12) at the two rear flip seats are welded to the corresponding bottom plate longitudinal beam (14); S23. Position the hydraulic cylinder upper fixing seat in the front-to-back direction and the up-down direction; first, place the hydraulic cylinder upper fixing seat welded after step S1 between two bottom plate longitudinal beams (14); then, sequentially pass the first hydraulic cylinder upper fixing seat positioning shaft (2) through the first fixing plate (1321) in the left hydraulic cylinder fixing support (132), the left hydraulic cylinder upper fixing seat positioning plate (32), and the second fixing plate (1332) in the left hydraulic cylinder fixing support (132); and sequentially pass the second hydraulic cylinder upper fixing seat positioning shaft (2) through the second fixing plate (1322) in the right hydraulic cylinder fixing support (133), the right hydraulic cylinder upper fixing seat positioning plate (32), and the first fixing plate (1331) in the right hydraulic cylinder fixing support (133); and finally, weld the contact portion between the hydraulic cylinder upper fixing seat and the bottom plate assembly (1).

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