Shotcrete support for foundation pit support and construction method

Abstract

The present invention relates to the field of foundation pit spraying equipment, specifically a spraying bracket for foundation pit support and a construction method, including a vehicle body, the top of the vehicle body is fixedly connected to a scissor lift body, the top of the scissor lift body is fixedly connected to a movable platform, and a movable component is arranged inside the movable platform. This kind of foundation pit support spraying bracket, through the setting of a movable bin, through the setting of reciprocating spraying and a tiltable connecting head, enables the connecting head to match the inclined surface of the slope, and allows the connecting head to be arranged relatively parallel to the inclined surface, which is convenient for increasing the effect of spraying, and through the setting of a controllable power part, when detecting the slope of the slope, as the relative oblique angle increases, the transmission distance of the power part in the same time also increases, so that when intermittent downward spraying is performed, the distance between the connecting head and the slope can be always maintained, avoiding excessive angles causing large-angle spraying of concrete and uneven spraying.

Description

Technical Field

[0001] The invention relates to the field of foundation pit spraying equipment, in particular to a spraying bracket for foundation pit support and a construction method. Background Art

[0002] Foundation pit support: The foundation pit is an earth pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. As the foundation pit of the building, it is necessary to protect the slope of the foundation pit by spraying concrete after excavation to prevent the soil in the foundation pit from loosening and collapsing, causing engineering accidents.

[0003] It was found that the following problems have not been well solved: 1. When spraying, workers usually stand on a bracket and spray concrete on the slope by shouldering, etc. However, due to the reaction force generated during the pipe spraying process, it is very dangerous for workers to be at heights, which is not convenient for the safe use of equipment; 2. Secondly, due to limited manpower, when workers are spraying, the amount of concrete sprayed at the same time is different when spraying on slopes of different heights, which may result in a large difference in thickness after spraying, which is not convenient for subsequent operations. Summary of the invention

[0004] The purpose of the present invention is to provide a shotcrete support for foundation pit support and a construction method to solve the problems of inconvenience in safe use and inconvenience in smooth spraying mentioned in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a shotcrete support for foundation pit support, comprising a vehicle body, a scissor lift body is fixedly connected to the top of the vehicle body, a movable platform is fixedly connected to the top of the scissor lift body, and a movable component is arranged inside the movable platform;

[0005] The movable component includes a movable warehouse, the movable warehouse is opened in the inner wall of the movable platform, the movable platform is slidably connected in the inner wall of the movable warehouse, a first reciprocating screw is rotatably connected in the inner wall of the movable platform, and a transmission motor is fixedly connected to one side of the first reciprocating screw, a movable sleeve is threadedly connected on the outer wall of the first reciprocating screw, and a connecting rod is fixedly connected to the top of the movable sleeve, the top of the connecting rod is fixedly connected to a support frame, and a pulling wheel is rotatably connected in the inner wall of the support frame, the top of the pulling wheel is meshed with a transmission gear, and the top of the transmission gear is meshed with a connecting head, and the connecting head is hinged to the support frame;

[0006] A force storage member is arranged in the inner wall of the movable platform, and a power member is arranged in the inner wall of the movable bin;

[0007] The movable warehouse also includes a parallelogram frame, which is fixedly connected to the top of the vehicle body, and the parallelogram frame is hinged by two groups of vertical rods and cross rods. The parallelogram frame is symmetrically arranged with two groups, and the two groups of parallelogram frames are connected by a plug-in rod, and the two ends of the plug-in rod are respectively hinged to the vertical rods in the two parallelogram frames, and a limiting groove is provided in the cross rod, and a push plate is slidably connected in the limiting groove, and the side wall of the push plate is connected to the inner wall of the limiting groove through a spring, the front end of the push plate is fixedly connected with a half-tooth sleeve, and a limiting gear is meshed in the inner wall of the half-tooth sleeve, and the limiting gear is fixedly connected to the vertical rod, and the limiting gear is sleeved on the plug-in rod.

[0008] Preferably, the force storage member includes a control compartment, the control compartment is provided in the inner wall of the movable compartment, an L-shaped plate is fixedly connected to the inner wall of the control compartment, a movable groove is provided on the top wall of the L-shaped plate, and a through cavity is provided on the side wall of the L-shaped plate, an upper slide groove is provided in the inner wall of the through cavity, and the upper slide groove is arranged in a W structure, and the front and rear side walls of the upper slide groove are staggered, and the front end of the upper slide groove is connected to the lower slide groove;

[0009] An inner groove is provided on the top wall of the through cavity, and the inner groove is connected to the movable groove, and a spring is fixedly connected to the inner wall of the inner groove, a connecting plate is slidably connected to the inner wall of the through cavity, and a transverse groove is provided at the bottom end of the connecting plate, and a limiting rod is slidably connected to the inner wall of the transverse groove, and the bottom end of the limiting rod is slidably connected to the upper sliding groove and the lower sliding groove;

[0010] An inner groove begins to be formed on the side wall of the through cavity, and the inner groove is arranged at the same level as the upper slide groove.

[0011] Preferably, the lower slide groove and the upper slide groove have the same structure, a connecting groove is connected at the center of the lower slide groove, and the depth of the connecting groove is higher than the depth of the left side of the lower slide groove, and an inclined panel is fixedly connected to the top of the connecting groove.

[0012] Preferably, the force storage member further comprises a locking groove, the locking groove is provided in the connecting plate, and a double-headed plug rod of a U-shaped structure is slidably connected in the locking groove, a spring telescopic rod is fixedly connected in the inner side wall of the double-headed plug rod, a push rod is fixedly connected at the rear end of the double-headed plug rod, an oblique groove is provided in the inner wall of the push rod, an oblique plate is inserted in the inner wall of the oblique groove, and the oblique plate is slidably connected to the locking groove;

[0013] A telescopic rod is hinged on the side wall of the double-headed plug rod, and a locking rod is hinged on the other end of the telescopic lever. The center of the telescopic lever is rotatably connected to the locking groove, and a locking plate is inserted at the front end of the locking rod, and the top of the locking plate is fixedly connected to the movable sleeve.

[0014] Preferably, the power part includes a transmission rod, which is rotatably connected to the inner wall of the movable warehouse, and the transmission rod is symmetrically arranged in two groups, and a frustum column is inserted on the outer wall of the transmission rod through a spline, and the frustum column is symmetrically arranged in two groups about the center of the transmission rod, and the outer walls of the two frustum columns are sleeved with shaft sleeves, and the top ends of the two shaft sleeves are rotatably connected with tooth plates, and the two tooth plates are arranged opposite to each other, and the same limit sleeve is inserted on the two tooth plates, and the top end of the limit sleeve is connected to the movable table through a metal rod.

[0015] Preferably, the power member further comprises a gear column, the gear column is rotatably connected to the limit sleeve, and both upper and lower ends of the gear column are gear structures, and the outer teeth at the bottom end of the gear column are meshed with two tooth plates, the top end of the gear column is meshed with a tooth push plate, and two sets of gear grooves arranged oppositely are opened in the inner wall of the tooth push plate;

[0016] The front end of the transmission rod is rotatably connected to a flywheel via a one-way shaft, and a winding wheel is sleeved on the outer wall of the flywheel. A cable is wound inside the winding wheel, and the front end of the cable is fixedly connected to the rear end of the connecting plate. The shaft end of the flywheel is rotatably connected to the movable platform via a coil spring.

[0017] A power rod is horizontally arranged at the top of the transmission rod, and a connecting sleeve is splined on the outer wall of the power rod, and the connecting sleeve is connected to the transmission rod through a pulley, a second reciprocating screw is horizontally arranged on the side of the power rod, and the second reciprocating screw is threadedly connected to the movable bin, and a toggle disk is fixedly connected to the end of the second reciprocating screw.

[0018] Preferably, a positioning rod is fixedly connected to the side wall of the movable platform, and the cross section of the positioning rod is an I-shaped structure, a take-up wheel is fixedly connected to the outer wall of the positioning rod, and the other side of the take-up wheel is engaged with a limiting disk, an elastic line is fixedly connected to the outer wall of the limiting disk, and the bottom end of the elastic line is connected to the push plate, and a spring is fixedly connected to the rear end of the limiting disk;

[0019] A cable is wound on the outer wall of the take-up wheel, and the bottom end of the cable is fixedly connected to the parallelogram frame, and the other end of the cable is connected to the tooth push plate, and one section of the cable is fixed on the tooth push plate and extends and wound on the pulling wheel.

[0020] A method for using a shotcrete support for foundation pit support comprises the following steps:

[0021] S1. First, the staff starts the equipment and moves it to the required shotcrete position through the vehicle body control device. Then, the scissor lift is started to drive the shotcrete pipe to the highest position. At this time, the staff manually pushes the push plate, and the push plate drives the half-tooth sleeve to separate from the limit gear. At this time, the lock between the vertical rod and the horizontal rod is unlocked. At the same time, due to the forward movement of the push plate, the push plate pushes the limit plate outward through the pull of the elastic line, so that the limit plate is separated from the take-up wheel, and the restriction on the take-up wheel is released. At this time, the parallelogram frame is pushed forward, and the parallelogram frame fits the side of the foundation pit. At this time, the push plate is released, and the push plate is reset by the spring to lock the parallelogram frame. At this time, the staff can untie the knot and connect the limit plate to the limit plate again;

[0022] S2. As the parallelogram frame moves forward, the limit sleeve will be pulled to the left by the cable. When the limit sleeve moves, the limit sleeve adopts the setting of relative gear groove, so that the two gear columns on the limit sleeve rotate in the same direction. Due to the rotation of the gear column, the two tooth plates at the lower end of the gear column move relative to each other. Due to the combination setting of two sets of round cone columns with the same structure, the front and rear sets of round cone columns are arranged to expand and approach each other, and the two sets of round cone columns are connected by a transmission belt, so as to form a structure similar to a continuously variable transmission, so as to change the transmission ratio of the power;

[0023] S3. When the cable is pulled, the pulling wheel will be pulled synchronously. The rotation of the pulling wheel drives the transmission gear to rotate. The transmission gear drives the connector to rotate forward, so that the connector drives the spraying pipe to rotate and match the slope of the foundation pit;

[0024] S4, then the driving motor is started, the driving motor drives the first reciprocating screw to rotate, the first reciprocating screw pushes the support frame to move from right to left, and the first spraying is performed by driving the reciprocating motion of the spraying pipe, and the scissor lift body adopts a timed lifting and lowering time, the time is the same as the reciprocating motion time of the support frame, so that after completing one reciprocating spraying, the scissor lift body moves downward by a quantitative distance;

[0025] The locking rod is then pushed forward by the push rod with the inclined surface to move the double-headed plug rod forward, and the locking rod is moved out of the locking plate, causing the connecting plate to be reset through the setting of the coil spring and the cable.

[0026] S5. With the resetting of the cable, the flywheel rotates at high speed, and the power is transmitted to the two groups of round cone columns through the flywheel and the two groups of round cone columns connected by the transmission belt, so that the power is transmitted to the power rod through the transmission rod, and the power rod then inputs the power to the second reciprocating screw. At this time, the movable bin can be driven to move backward in a timely manner by resetting the connecting plate.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] In the present invention, by arranging the vehicle body, the scissor lift body and the movable platform, the spraying operation of the slope can be automatically performed, so that workers are prevented from being at high places and the occurrence of safety hazards is avoided.

[0029] In the present invention, by setting a movable bin, by reciprocating spraying and by setting a tiltable connector, the connector can match the inclined surface of the slope, and the connector and the inclined surface are arranged relatively parallel, so as to increase the effect of spraying.

[0030] In the present invention, by setting a controllable power part, when detecting the slope inclination, as the relative inclination angle increases, the transmission distance of the power part in the same time also increases, so that when intermittent downward spraying is performed, the distance between the connecting head and the slope can always be maintained, avoiding excessively large angles that cause concrete to be sprayed out at a large angle, resulting in uneven spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of the present invention;

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of the parallelogram frame of the present invention;

[0033] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a parallelogram frame in the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the limit plate and the take-up wheel in the present invention;

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the movable component in the present invention;

[0036] Figure 6 It is a schematic diagram of the cross-sectional structure of the connector in the present invention;

[0037] Figure 7 The partial cross-sectional structure diagram of the movable platform in the present invention is shown in FIG. Figure 1 ;

[0038] Figure 8 The partial cross-sectional structure diagram of the movable platform in the present invention is shown in FIG. Figure 2 ;

[0039] Fig. 9 It is a schematic diagram of the structure of the power part in the present invention;

[0040] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at A in the middle;

[0041] Fig.11 It is a schematic diagram of the three-dimensional structure of the truncated cone column in the present invention;

[0042] Fig.12 It is a schematic diagram of the limit sleeve structure in the present invention;

[0043] Fig.13 It is a schematic diagram of the cross-sectional structure of the connecting plate in the present invention;

[0044] Fig.14 It is a schematic diagram of the structure of the upper chute and the lower chute in the present invention.

[0045] In the figure: 1, vehicle body; 2, scissor lift body; 3, movable platform; 4, movable assembly; 41, movable chamber; 42, movable platform; 43, first reciprocating screw rod; 44, movable sleeve; 45, connecting rod; 46, pulling wheel; 47, transmission gear; 48, connecting head; 49, force storage member; 491, control chamber; 492, L-shaped plate; 493, through cavity; 494, upper slide groove; 495, lower slide groove; 496, connecting plate; 497, transverse groove; 498, limiting rod; 499, inner groove; 4910, locking groove; 4911, double-headed plug rod; 4912, spring telescopic rod; 4913, push rod; 4914, inclined plate; 4915, telescopic lever; 4916, locking rod; 4917, locking plate; 410, power part; 4101, transmission rod; 4102, truncated cone column; 4103, bushing; 4104, tooth plate; 4105, limiting sleeve; 4106, gear column; 4107, tooth push plate; 4108, flywheel; 4109, winding wheel; 41010, power rod; 41011, connecting sleeve; 41012, second reciprocating screw rod; 411, parallelogram frame; 412, plug-in rod; 413, limiting groove; 414, pushing plate; 415, half tooth sleeve; 416, limiting gear; 5, positioning rod; 6, winding wheel; 7, limiting disk. DETAILED DESCRIPTION

[0046] 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figures 1 to 14 The present invention provides a technical solution: a shotcrete support for foundation pit support, comprising a vehicle body 1, a scissor lift body 2 is fixedly connected to the top of the vehicle body 1, a movable platform 3 is fixedly connected to the top of the scissor lift body 2, and a movable component 4 is arranged inside the movable platform 3;

[0048] The movable component 4 includes a movable warehouse 41, which is opened in the inner wall of the movable platform 3, and a movable platform 42 is slidably connected in the inner wall of the movable warehouse 41, and a first reciprocating screw rod 43 is rotatably connected in the inner wall of the movable platform 42, and a transmission motor is fixedly connected to one side of the first reciprocating screw rod 43, and a movable sleeve 44 is threadedly connected on the outer wall of the first reciprocating screw rod 43, and a connecting rod 45 is fixedly connected to the top of the movable sleeve 44, and a support frame is fixedly connected to the top of the connecting rod 45, and a pulling wheel 46 is rotatably connected in the inner wall of the support frame, and a transmission gear 47 is meshed at the top of the pulling wheel 46, and a connecting head 48 is meshed at the top of the transmission gear 47, and the connecting head 48 is hinged to the support frame;

[0049] A force storage member 49 is provided in the inner wall of the movable platform 42, and a power member 410 is provided in the inner wall of the movable bin 41;

[0050] The movable warehouse 41 also includes a parallelogram frame 411, which is fixedly connected to the top of the vehicle body 1, and the parallelogram frame 411 is hinged by two groups of vertical rods and cross rods. The parallelogram frame 411 is symmetrically arranged with two groups, and the two groups of parallelogram frames 411 are connected by a plug-in rod 412, and the two ends of the plug-in rod 412 are respectively hinged to the vertical rods in the two parallelogram frames 411, and a limiting groove 413 is provided in the cross rod, and a push plate 414 is slidably connected in the limiting groove 413, and the side wall of the push plate 414 is connected to the inner wall of the limiting groove 413 through a spring, and the front end of the push plate 414 is fixedly connected with a half-toothed sleeve 415, and a limiting gear 416 is meshed in the inner wall of the half-toothed sleeve 415, and the limiting gear 416 is fixedly connected to the vertical rod, and the limiting gear 416 is sleeved on the plug-in rod 412.

[0051] In this embodiment, Figure 5 , Figure 6 and Figure 7 As shown, the force storage member 49 includes a control compartment 491, which is opened in the inner wall of the movable compartment 41, an L-shaped plate 492 is fixedly connected to the inner wall of the control compartment 491, and a movable groove is opened on the top wall of the L-shaped plate 492, and a through cavity 493 is opened on the side wall of the L-shaped plate 492, and an upper slide groove 494 is opened in the inner wall of the through cavity 493, and the upper slide groove 494 is arranged in a W structure, and the front and rear side walls of the upper slide groove 494 are staggered, and the front end of the upper slide groove 494 is connected to a lower slide groove 495;

[0052] An inner groove is formed on the top wall of the through cavity 493, and the inner groove is connected to the movable groove, and a spring is fixedly connected to the inner wall of the inner groove, a connecting plate 496 is slidably connected to the inner wall of the through cavity 493, and a transverse groove 497 is formed at the bottom end of the connecting plate 496, and a limiting rod 498 is slidably connected to the inner wall of the transverse groove 497, and the bottom end of the limiting rod 498 is slidably connected to the upper sliding groove 494 and the lower sliding groove 495;

[0053] An inner groove 499 begins to be formed on the side wall of the through cavity 493, and the inner groove 499 is arranged at the same level as the upper slide groove 494. Through the coordinated arrangement of the upper slide groove 494 and the lower slide groove 495, a force storage operation can be performed during the reciprocating motion.

[0054] In this embodiment, Figure 8 , Fig. 9 and Fig.10 As shown, the lower slide groove 495 and the upper slide groove 494 have the same structure. A connecting groove is connected at the center of the lower slide groove 495, and the depth of the connecting groove is higher than the depth on the left side of the lower slide groove 495. An inclined panel is fixedly connected to the top of the connecting groove to facilitate the control of the connection between the connecting plate 496 and the locking plate 4917.

[0055] In this embodiment, Figure 5 , Figure 8 , Fig. 9 and Fig.10 As shown, the force storage member 49 also includes a locking groove 4910, which is provided in the connecting plate 496, and a double-headed plug rod 4911 of a U-shaped structure is slidably connected in the locking groove 4910, a spring telescopic rod 4912 is fixedly connected in the inner side wall of the double-headed plug rod 4911, a push rod 4913 is fixedly connected to the rear end of the double-headed plug rod 4911, and an oblique groove is provided in the inner wall of the push rod 4913, and an oblique plate 4914 is inserted in the inner wall of the oblique groove, and the oblique plate 4914 is slidably connected to the locking groove 4910;

[0056] A telescopic rod is hinged on the side wall of the double-headed insertion rod 4911, and a locking rod 4916 is hinged on the other end of the telescopic lever 4915. The center of the telescopic lever 4915 is rotatably connected to the locking groove 4910, and a locking plate 4917 is inserted at the front end of the locking rod 4916. The top of the locking plate 4917 is fixedly connected to the movable sleeve 44. Through the arrangement of the double-headed insertion rod 4911 and the locking plate 4917, the locking rod 4916 can be inserted into the locking plate 4917, and the locking plate 4917 and the connecting plate 496 can be connected to perform power connection.

[0057] In this embodiment, Figure 7 , Figure 8 , Fig. 9 , Fig.11 and Fig.13As shown, the power member 410 includes a transmission rod 4101, which is rotatably connected to the inner wall of the movable bin 41, and the transmission rod 4101 is symmetrically arranged in two groups, and a cone column 4102 is inserted on the outer wall of the transmission rod 4101 through a spline, and two groups of cone columns 4102 are symmetrically arranged about the center of the transmission rod 4101, and shaft sleeves 4103 are sleeved on the outer walls of the two cone columns 4102, and the top ends of the two shaft sleeves 4103 are rotatably connected with tooth plates 4104, and the two tooth plates 4104 are arranged opposite to each other, and the same limiting sleeve 4105 is inserted on the two tooth plates 4104, and the top end of the limiting sleeve 4105 is connected to the movable platform 42 through a metal rod, and the setting of the two groups of cone columns 4102 realizes a stepless speed change effect, thereby controlling the backward movement distance of the connecting head 48.

[0058] In this embodiment, Figure 8 , Fig.11 and Fig.12 As shown, the power member 410 also includes a gear column 4106, which is rotatably connected to the limit sleeve 4105, and the upper and lower ends of the gear column 4106 are gear structures, and the outer teeth at the bottom of the gear column 4106 are meshed with the two tooth plates 4104, and the top of the gear column 4106 is meshed with a tooth push plate 4107, and the inner wall of the tooth push plate 4107 is provided with two sets of gear grooves arranged opposite to each other;

[0059] The front end of the transmission rod 4101 is rotatably connected to a flywheel 4108 via a one-way shaft, and a winding wheel 4109 is sleeved on the outer wall of the flywheel 4108. A cable is wound inside the winding wheel 4109, and the front end of the cable is fixedly connected to the rear end of the connecting plate 496. The shaft end of the flywheel 4108 is rotatably connected to the movable platform 42 via a coil spring.

[0060] A power rod 41010 is horizontally arranged at the top of the transmission rod 4101, and a connecting sleeve 41011 is splined on the outer wall of the power rod 41010, and the connecting sleeve 41011 is connected to the transmission rod 4101 through a pulley, and a second reciprocating screw rod 41012 is horizontally arranged on the side of the power rod 41010, and the second reciprocating screw rod 41012 is threadedly connected to the movable bin 41, and a toggle disk is fixedly connected to the end of the second reciprocating screw rod 41012, and through the setting of the flywheel 4108, the movable bin 41 can be driven to move backward intermittently in a quantitative manner.

[0061] In this embodiment, Figure 4 As shown, a positioning rod 5 is fixedly connected to the side wall of the movable platform 3, and the cross section of the positioning rod 5 is an I-shaped structure. A take-up wheel 6 is fixedly connected to the outer wall of the positioning rod 5, and the other side of the take-up wheel 6 is engaged with a limit plate 7. An elastic line is fixedly connected to the outer wall of the limit plate 7, and the bottom end of the elastic line is connected to the push plate 414. A spring is fixedly connected to the rear end of the limit plate 7.

[0062] A cable is wound on the outer wall of the take-up wheel 6, and the bottom end of the cable is fixedly connected to the parallelogram frame 411, and the other end of the cable is connected to the tooth push plate 4107, and one section of the cable is fixed on the tooth push plate 4107 and extends and is wound around the pulling wheel 46. Through the setting of the take-up wheel 6 and the limit plate 7, it can be coordinated with the parallelogram frame 411 to facilitate the control of the spraying state.

[0063] In this embodiment, Figures 1 to 5 As shown, a method for using a shotcrete support for foundation pit support comprises the following steps:

[0064] S1. First, the staff starts the equipment and controls the equipment to move to the required spraying position through the vehicle body 1. Then, the scissor lift is started to drive the spraying pipe to the highest position. At this time, the staff manually pushes the push plate 414, and the push plate 414 drives the half-tooth sleeve 415 to separate from the limit gear 416. At this time, the lock between the vertical rod and the horizontal rod is unlocked. At the same time, due to the forward movement of the push plate 414, the push plate 414 pushes the limit plate 7 to move outward through the pulling of the elastic line, so that the limit plate 7 is separated from the take-up wheel 6, and the restriction on the take-up wheel 6 is released. At this time, the parallelogram frame 411 is pushed forward, and the parallelogram frame 411 is fitted with the side of the foundation pit. At this time, the push plate 414 is released, and the push plate 414 is reset by the spring to lock the parallelogram frame 411. At this time, the staff can untie the knot and the limit plate 7 is connected to the limit plate 7 again;

[0065] S2. With the forward movement of the parallelogram frame 411, the limit sleeve 4105 will be pulled to the left by the cable. When the limit sleeve 4105 moves, the limit sleeve 4105 adopts the setting of relative gear grooves, so that the two gear columns 4106 on the limit sleeve 4105 rotate in the direction. Due to the rotation of the gear column 4106, the two tooth plates 4104 at the lower end of the gear column 4106 move relative to each other. Due to the combination setting of two sets of frustum columns 4102 with the same structure, the front and rear groups of frustum columns 4102 are arranged to expand and approach each other, and the two groups of frustum columns 4102 are connected by a transmission belt, so as to form a structure similar to a continuously variable transmission, so as to change the transmission ratio of the power;

[0066] S3, when the cable is pulled, the pulling wheel 46 will be pulled synchronously, the pulling wheel 46 rotates to drive the transmission gear 47 to rotate, and the transmission gear 47 pushes the connector 48 to rotate forward, so that the connector 48 drives the spraying pipe to rotate and match the slope of the foundation pit;

[0067] S4, then the driving motor is started, the driving motor drives the first reciprocating screw rod 43 to rotate, the first reciprocating screw rod 43 pushes the support frame to move from right to left, and the first spraying is performed by driving the reciprocating motion of the spraying pipe, and the scissor lift body 2 adopts a timed lifting and lowering, the time is the same as the reciprocating motion time of the support frame, so that after completing one reciprocating spraying, the scissor lift body 2 moves downward by a quantitative distance;

[0068] At the same time, after the support frame moves to the left, the locking plate 4917 at the bottom of the movable sleeve 44 fits with the rear end of the double-headed plug rod 4911, pushing the connecting plate 496 to overcome the spring and move backward. Since the connecting plate 496 is provided with a transverse groove 497 inside, the limiting rod 498 at the lower end of the transverse groove 497 moves in the upper slide groove 494 until it slides into the innermost part of the lower slide groove 495. At this time, the double-headed plug rod 4911 fits with the inner wall of the through cavity 493, and the double-headed plug rod 4911 and the locking rod 4916 are in contact with each other. The two connecting plates 496 are connected by a telescopic rod, so that the locking rod 4916 is inserted into the locking plate 4917. At this time, the locking plate 4917 is connected with the connecting plate 496, and the connecting plate 496 is pulled forward to accumulate force until the inclined plate 4914 in the connecting plate 496 fits with the inner wall of the movable chamber 41. The double-headed plug rod 4911 is pushed forward by the push rod 4913 with an inclined surface, and the locking rod 4916 is removed from the locking plate 4917, so that the connecting plate 496 is reset through the setting of the coil spring and the cable.

[0069] S5. Along with the resetting of the cable, the flywheel 4108 rotates at high speed. Through the setting of the flywheel 4108 and the two groups of truncated cone columns 4102 connected by the transmission belt, the power is transmitted to the two groups of truncated cone columns 4102, so that the power is transmitted to the power rod 41010 through the transmission rod 4101, and the power rod 41010 then inputs the power to the second reciprocating screw rod 41012. At this time, the movable warehouse 41 can be driven to move backward in a timely manner by resetting the connecting plate 496.

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shotcrete support for foundation pit support, comprising a vehicle body (1), characterized in that: The top of the vehicle body (1) is fixedly connected to a scissor lift body (2), the top of the scissor lift body (2) is fixedly connected to a movable platform (3), and a movable component (4) is arranged inside the movable platform (3); The movable assembly (4) comprises a movable bin (41), wherein the movable bin (41) is provided in the inner wall of the movable platform (3), a movable table (42) is slidably connected in the inner wall of the movable bin (41), a first reciprocating screw (43) is rotatably connected in the inner wall of the movable table (42), and a transmission motor is fixedly connected to one side of the first reciprocating screw (43), a movable sleeve (44) is threadedly connected on the outer wall of the first reciprocating screw (43), and a connecting rod (45) is fixedly connected to the top of the movable sleeve (44), a supporting frame is fixedly connected to the top of the connecting rod (45), and a pulling wheel (46) is rotatably connected in the inner wall of the supporting frame, a transmission gear (47) is meshed at the top of the pulling wheel (46), and a connecting head (48) is meshed at the top of the transmission gear (47), and the connecting head (48) is hinged to the supporting frame; A force storage member (49) is provided in the inner wall of the movable platform (42), and a power member (410) is provided in the inner wall of the movable bin (41); The movable compartment (41) further comprises a parallelogram frame (411), the parallelogram frame (411) being fixedly connected to the top of the vehicle body (1), and the parallelogram frame (411) being hingedly arranged by two groups of vertical rods and horizontal rods, the parallelogram frame (411) being symmetrically arranged in two groups, the two groups of parallelogram frames (411) being connected by a plug-in rod (412), and the two ends of the plug-in rod (412) being respectively hingedly arranged with the vertical rods in the two parallelogram frames (411), and the horizontal rods A limit slot (413) is provided in the rod, a push plate (414) is slidably connected in the limit slot (413), and a side wall of the push plate (414) is connected to the inner wall of the limit slot (413) via a spring, a half-tooth sleeve (415) is fixedly connected to the front end of the push plate (414), a limit gear (416) is meshed in the inner wall of the half-tooth sleeve (415), and the limit gear (416) is fixedly connected to the vertical rod, and the limit gear (416) is sleeved on the plug rod (412).

2. The shotcrete support for foundation pit support according to claim 1, characterized in that: The force storage member (49) comprises a control chamber (491), wherein the control chamber (491) is provided in the inner wall of the movable chamber (41), an L-shaped plate (492) is fixedly connected to the inner wall of the control chamber (491), a movable groove is provided on the top wall of the L-shaped plate (492), a through cavity (493) is provided on the side wall of the L-shaped plate (492), an upper slide groove (494) is provided in the inner wall of the through cavity (493), the upper slide groove (494) is arranged in a W structure, and the front and rear side walls of the upper slide groove (494) are arranged in a staggered manner, and the front end of the upper slide groove (494) is connected to a lower slide groove (495); An inner groove is provided on the top wall of the through cavity (493), and the inner groove is connected to the movable groove, and a spring is fixedly connected to the inner wall of the inner groove, a connecting plate (496) is slidably connected to the inner wall of the through cavity (493), and a transverse groove (497) is provided at the bottom end of the connecting plate (496), and a limiting rod (498) is slidably connected to the inner wall of the transverse groove (497), and the bottom end of the limiting rod (498) is slidably connected to the upper sliding groove (494) and the lower sliding groove (495); An inner groove (499) begins to be formed on the side wall of the through cavity (493), and the inner groove (499) is arranged at the same level as the upper slide groove (494).

3. The shotcrete support for foundation pit support according to claim 2, characterized in that: The lower slide groove (495) and the upper slide groove (494) have the same structure. A connecting groove is connected at the center of the lower slide groove (495), and the depth of the connecting groove is greater than the depth of the left side of the lower slide groove (495). An inclined plate is fixedly connected to the top of the connecting groove.

4. The shotcrete support for foundation pit support according to claim 3, characterized in that: The force storage member (49) further comprises a locking groove (4910), wherein the locking groove (4910) is provided in the connecting plate (496), and a double-headed plug rod (4911) of a U-shaped structure is slidably connected in the locking groove (4910), a spring telescopic rod (4912) is fixedly connected in the inner side wall of the double-headed plug rod (4911), a push rod (4913) is fixedly connected at the rear end of the double-headed plug rod (4911), an inclined groove is provided in the inner wall of the push rod (4913), an inclined plate (4914) is inserted in the inner wall of the inclined groove, and the inclined plate (4914) is slidably connected to the locking groove (4910); A telescopic lever is hinged on the side wall of the double-headed plug rod (4911), and a locking rod (4916) is hinged on the other end of the telescopic lever (4915). The center of the telescopic lever (4915) is rotatably connected to the locking groove (4910). A locking plate (4917) is inserted at the front end of the locking rod (4916), and the top end of the locking plate (4917) is fixedly connected to the movable sleeve (44).

5. The shotcrete support for foundation pit support according to claim 4, characterized in that: The power member (410) comprises a transmission rod (4101), the transmission rod (4101) being rotatably connected to the inner wall of the movable bin (41), and the transmission rod (4101) being symmetrically arranged in two groups, and a truncated cone column (4102) being plugged into the outer wall of the transmission rod (4101) via a spline, and the truncated cone column (4102) being symmetrically arranged in two groups about the center of the transmission rod (4101), and shaft sleeves (4103) being sleeved on the outer walls of the two truncated cone columns (4102), and the top ends of the two shaft sleeves (4103) being rotatably connected to tooth plates (4104), and the two tooth plates (4104) being arranged opposite to each other, and the same limiting sleeve (4105) being plugged into the two tooth plates (4104), and the top end of the limiting sleeve (4105) being connected to the movable table (42) via a metal rod.

6. The shotcrete support for foundation pit support according to claim 5, characterized in that: The power member (410) further comprises a gear column (4106), wherein the gear column (4106) is rotatably connected to the limiting sleeve (4105), and the upper and lower ends of the gear column (4106) are gear structures, and the outer teeth at the bottom end of the gear column (4106) are meshed with the two tooth plates (4104), and the top end of the gear column (4106) is meshed with a tooth push plate (4107), and the inner wall of the tooth push plate (4107) is provided with two sets of gear grooves arranged opposite to each other; The front end of the transmission rod (4101) is rotatably connected to a flywheel (4108) via a one-way shaft, and a winding wheel (4109) is sleeved on the outer wall of the flywheel (4108). A cable is wound inside the winding wheel (4109), and the front end of the cable is fixedly connected to the rear end of the connecting plate (496). The shaft end of the flywheel (4108) is rotatably connected to the movable platform (42) via a coil spring. A power rod (41010) is horizontally arranged at the top end of the transmission rod (4101), and a connecting sleeve (41011) is splined on the outer wall of the power rod (41010), and the connecting sleeve (41011) is connected to the transmission rod (4101) via a pulley, and a second reciprocating screw rod (41012) is horizontally arranged on the side of the power rod (41010), and the second reciprocating screw rod (41012) is threadedly connected to the movable bin (41), and a toggle disc is fixedly connected to the end of the second reciprocating screw rod (41012).

7. The shotcrete support for foundation pit support according to claim 6, characterized in that: A positioning rod (5) is fixedly connected to the side wall of the movable platform (3), and the cross section of the positioning rod (5) is an I-shaped structure. A take-up wheel (6) is fixedly connected to the outer wall of the positioning rod (5), and the other side of the take-up wheel (6) is engaged with a limit plate (7). An elastic line is fixedly connected to the outer wall of the limit plate (7), and the bottom end of the elastic line is connected to the push plate (414). A spring is fixedly connected to the rear end of the limit plate (7); A cable is wound around the outer wall of the take-up wheel (6), and the bottom end of the cable is fixedly connected to the parallelogram frame (411), and the other end of the cable is connected to the tooth push plate (4107), and one section of the cable is fixed on the tooth push plate (4107) and extends and is wound around the pulling wheel (46).

8. The construction method of the shotcrete support for foundation pit support according to claim 7, characterized in that: The steps include: S1. First, the staff starts the equipment and controls the equipment to move to the required spraying position through the vehicle body (1). Then, the scissor lift is started to drive the spraying pipe to move to the highest position. At this time, the staff manually pushes the push plate (414), and the push plate (414) drives the half-tooth sleeve (415) to separate from the limit gear (416). At this time, the lock between the vertical rod and the horizontal rod is unlocked. At the same time, due to the forward movement of the push plate (414), the push plate (414) pushes the limit plate (7) outward by pulling the elastic line, so that the limit plate (7) is separated from the take-up wheel (6), and the restriction on the take-up wheel (6) is released. At this time, the parallelogram frame (411) is pushed forward, and the parallelogram frame (411) is fitted with the side of the foundation pit. At this time, the push plate (414) is released, and the push plate (414) is reset by the spring to lock the parallelogram frame (411). At this time, the staff can untie the knot and connect the limit plate (7) to the limit plate (7) again; S2. As the parallelogram frame (411) moves forward, the limit sleeve (4105) is pulled to the left by the cable. When the limit sleeve (4105) moves, the limit sleeve (4105) is arranged relative to the gear groove, so that the two gear columns (4106) on the limit sleeve (4105) rotate in the direction. Due to the rotation of the gear column (4106), the two tooth plates (4104) at the lower end of the gear column (4106) move relative to each other. Due to the combination of two sets of frustum columns (4102) with the same structure, the front and rear sets of frustum columns (4102) are arranged to be spread out and close to each other, and the two sets of frustum columns (4102) are connected by a transmission belt, so as to form a structure similar to a continuously variable transmission, thereby changing the transmission ratio of the power. S3, when the cable is pulled, the pulling wheel (46) is pulled synchronously, the pulling wheel (46) rotates to drive the transmission gear (47) to rotate, and the transmission gear (47) drives the connector (48) to rotate forward, so that the connector (48) drives the spraying pipe to rotate and match the slope of the foundation pit; S4, the driving motor is then started, the driving motor drives the first reciprocating screw rod (43) to rotate, the first reciprocating screw rod (43) pushes the support frame to move from right to left, and the first spraying is performed by driving the spraying pipe to move back and forth, and the scissor lift body (2) is lifted and lowered at a fixed time, the time being the same as the reciprocating time of the support frame, so that after completing one reciprocating spraying, the scissor lift body (2) moves downward by a fixed distance; At the same time, after the support frame moves to the left, the locking plate (4917) at the bottom end of the movable sleeve (44) fits with the rear end of the double-headed plug rod (4911), pushing the connecting plate (496) to overcome the spring and move backward. Since a transverse groove (497) is provided inside the connecting plate (496), the limiting rod (498) at the lower end of the transverse groove (497) moves in the upper slide groove (494) until it slides into the innermost part of the lower slide groove (495). At this time, the double-headed plug rod (4911) fits with the inner wall of the through cavity (493), and the double-headed plug rod (4911) and the locking rod (4916) The two connecting plates (4916) and (4917) are connected by a telescopic rod, so that the locking rod (4916) is inserted into the locking plate (4917). At this time, the locking plate (4917) is connected to the connecting plate (496), and the connecting plate (496) is pulled forward to accumulate force until the inclined plate (4914) in the connecting plate (496) fits the inner wall of the movable chamber (41). The double-headed plug rod (4911) is pushed forward by the push rod (4913) with an inclined surface, and the locking rod (4916) is moved out of the locking plate (4917), so that the connecting plate (496) is reset by the setting of the coil spring and the cable; S5. With the resetting of the cable, the flywheel (4108) rotates at a high speed. Through the arrangement of the flywheel (4108) and two groups of truncated cone columns (4102) connected by a transmission belt, power is transmitted to the two groups of truncated cone columns (4102), so that the power is transmitted to the power rod (41010) through the transmission rod (4101). The power rod (41010) then inputs the power to the second reciprocating screw rod (41012). At this time, the movable bin (41) can be driven to move backward in a timely manner by resetting the connecting plate (496).

Images