A new type of retreat platform

Abstract

The utility model discloses a novel retreat platform, the retreat platform includes the preposition platform and main platform, the main platform top both sides are provided with the lifting device, every the loading and unloading platform is provided with lifting device, the lifting device propulsion work makes the retreat platform with the hinge of pushover device as the pivot makes the retreat platform lift. The utility model relates to the technical field of coal mine production, and the cooperation of the direction platform and telescopic big arm realizes that only need to carry out the hooking two times traction chain can complete whole traction, and the work of direction adjustment. Meanwhile, the lifting device of this retreat platform can elevate the retreat platform to a certain angle, and the lifting device can be used for various inclination working surface, and the inclination is compensated, and after the flat car is connected with the main platform into an integral whole, can conveniently push the hydraulic support into the flat car through the telescopic big arm directly, need not use other devices to send the hydraulic support on different planes to the flat car.

Description

Technical Field

[0001] This utility model relates to the field of coal mine production technology, specifically a novel retraction platform. Background Technology

[0002] Hydraulic supports are placed in front of the fully mechanized mining face to create a mining space. Powered primarily by high-pressure hydraulic fluid, these supports perform tasks such as roof support, support forward movement, conveyor movement, and goaf management. After mining operations in a coal face are completed, the fully mechanized mining equipment must be removed. Due to the large number, size, and weight of hydraulic supports, specialized equipment is required for their removal. Therefore, our company has developed a specialized device for the rapid removal of hydraulic supports, improving safety and efficiency while reducing labor intensity.

[0003] Currently, there are roughly two methods for retracting supports: one is using a winch in conjunction with a single retracting support, which is the most widely used. Guide wheels are installed on the coal face, and a steel wire rope is threaded through the guide wheels to pull the support to be retracted from the support formation. During the extraction process, a single unit is manually used in conjunction with the winch to rotate the support 90°, and then a hand-operated hoist or other lifting equipment is used to load the support onto a flatbed truck or other transport equipment for removal. The other method is using a retraction platform to retract the support. The extension and retraction of the hydraulic cylinders pulls the support to be retracted onto the platform, rotates it 90°, and then it is pulled away by a retraction forklift. The problems with the existing retraction platform method are: 1. Pulling the support onto the platform requires repeated movement of the hydraulic cylinders on the support base and multiple chain engagements, making the process cumbersome. 2. It is not compatible with the height of the flatbed truck, requiring the use of a forklift or other lifting device to transfer the hydraulic support onto the flatbed truck, and during the transfer, there is a risk of tipping over, derailment, or backward movement. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel retraction platform that solves the problems of cumbersome procedures and incompatibility with the height of flatbed trucks in the use of existing hydraulic support retraction platforms.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel retraction platform, the retraction platform comprising a front platform and a main platform, which are assembled into one unit; the end of the front platform away from the old pond is connected to an adjusting platform, and the end of the front platform away from the main platform is hinged to a pushing device;

[0006] The main platform is equipped with lifting devices on both sides of the top, and loading and unloading platforms are mounted on both sides of the front end of the main platform. Each loading and unloading platform is equipped with a lifting device. Each lifting device and lifting device on each side is fixed with a telescopic boom. The lifting device advances to raise the retraction platform with the hinge point with the pushing device as the axis.

[0007] The lifting device includes an outer lifting box, the bottom of which is in contact with the ground, and the outer wall of which is connected to the main platform. An inner lifting box is inserted from top to bottom on the top of the outer lifting box. A lifting cylinder is hinged to the bottom of the inner cavity of the outer lifting box via a lifting cylinder rod pin. The output end of the lifting cylinder is fixed to the inner lifting box, and a lifting cylinder connecting sleeve is fixed to the outside of the inner lifting box. The lifting cylinder connecting sleeve is hinged to the telescopic boom.

[0008] The lifting device includes an outer box fixed to the main platform, an inner box movably inserted into the top of the outer box, the inner box hinged to the telescopic boom, and a lifting cylinder hinged to the bottom of the inner cavity of the outer box via a lifting cylinder tail pin. The output end of the lifting cylinder is hinged to the inner box via a lifting cylinder rod pin.

[0009] Preferably, the main platform is provided with a connecting device at its front end. The connecting device includes a connecting fixing seat fixed to the main platform, and a connecting hook is connected to the front end of the connecting fixing seat.

[0010] Preferably, the telescopic boom includes an outer telescopic boom box, and the inner box of the lifting device and the bottom-lifting cylinder connecting sleeve are hinged to the outer telescopic boom box. One end of the outer telescopic boom box is slidably inserted into the inner telescopic boom box. A telescopic boom cylinder is installed inside the outer telescopic boom box. One end of the telescopic boom cylinder is connected to the outer telescopic boom box through a boom cylinder tail pin, and the other end is connected to the inner telescopic boom box through a boom cylinder rod pin. A boom sprocket is rotatably installed at one end of the inner telescopic boom box that extends out of the outer telescopic boom box.

[0011] Preferably, the pushing device includes a pushing beam, and a plurality of pushing connecting seats are provided on both sides of the pushing beam. A connecting box is connected to the pushing connecting seat close to the front platform. A pushing component is provided inside the front platform.

[0012] Preferably, the front platform includes a transition platform and an arc platform, which are assembled into one unit. Both the transition platform and the arc platform have a receiving cavity on the side close to the pushing beam, and the pushing component is located in the receiving cavity. The pushing component includes a second pushing cylinder located in the receiving cavity. The output end of the second pushing cylinder is connected to a telescopic box, and the telescopic box is connected to the connecting box.

[0013] Preferably, the transition platform has an inclined platform on the side closest to the old pond.

[0014] Preferably, the transition platform surface has multiple guide wheels distributed in an arc shape along the direction from the inclined platform to the main platform.

[0015] Preferably, an adjustment device is provided on the side of the outer edge of the arc platform close to the old pond side. The adjustment device includes an outer square box fixed to the arc platform. An inner square box is slidably inserted into one end of the outer square box. An adjustment cylinder is provided inside the outer square box. One end of the adjustment cylinder is connected to the outer square box through an adjustment long pin, and the other end is connected to the inner square box through an adjustment short pin.

[0016] Preferably, the loading and unloading platform includes a loading and unloading platform frame fixed on both sides of the main platform, a clamping cylinder mounting seat fixed on the loading and unloading platform frame, a clamping cylinder fixed on the clamping cylinder mounting seat, and the output ends of the two clamping cylinders are arranged opposite to each other.

[0017] Preferably, the steering platform includes a platform base, on which a first pushing cylinder and a slide rail are disposed opposite each other. A traction slider is fixed to the output end of the first pushing cylinder, and the traction slider is slidably connected in the slide rail. A steering sprocket is rotatably connected to the traction slider. A zipper cylinder is fixed to the platform base on one side of the first pushing cylinder, and a zipper chain is fixed to the output end of the zipper cylinder. The zipper chain overlaps the steering sprocket.

[0018] The beneficial effects of this utility model are as follows: By using the novel retraction platform provided by this utility model, compared with the prior art, the coordination of the steering platform and the telescopic boom allows the entire traction and steering operation to be completed by hooking the traction chain only twice, avoiding multiple chain hookings and simplifying the traction and steering process. Simultaneously, the lifting device of this retraction platform can raise the platform to a certain angle, and in conjunction with the lifting device, it can be used on various inclined working surfaces, compensating for the inclination angle. After the flatbed truck is connected to the main platform, the hydraulic supports can be conveniently pushed directly into the flatbed truck via the telescopic boom, without the need for other devices to deliver hydraulic supports located on different planes into the flatbed truck. Furthermore, during advancement, clamping cylinders can be used to clamp and fix the flatbed truck, preventing risks such as the flatbed truck overturning, derailing, or reversing due to excessive force or friction. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the retraction platform of this utility model;

[0020] Figure 2 This is the main view of the retraction platform of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the bottom-lifting device of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the lifting device of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the connecting device of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the loading and unloading platform of this utility model;

[0025] Figure 7 This is a three-dimensional structural diagram of the telescopic boom of this utility model;

[0026] Figure 8 This is a three-dimensional structural diagram of the orientation platform of this utility model;

[0027] Figure 9 This is a three-dimensional structural diagram of the front platform of this utility model;

[0028] Figure 10 This is a three-dimensional structural diagram of the alignment device of this utility model;

[0029] Figure 11 This is a front view of the retraction platform of this utility model;

[0030] Figure 12 This is a schematic diagram of the retraction platform of this utility model in the raised state.

[0031] Explanation of reference numerals in the figure

[0032] 1. Moving beam;

[0033] 2. Connect the square box;

[0034] 3. Adjustment platform: 31. Platform base, 32. Traction slider, 33. Zipper cylinder, 34. First push cylinder, 35. Adjustment sprocket, 36. Slide rail;

[0035] 4. Front platform: 41. Transition platform, 42. Arc platform, 43. Second pushing cylinder, 44. Telescopic box;

[0036] 5. Guide wheels;

[0037] 6. Inclined platform;

[0038] 7. Adjustment device: 71. Outer square box, 72. Inner square box, 73. Adjustment cylinder, 74. Adjustment long pin, 75. Adjustment short pin;

[0039] 8. Main platform;

[0040] 9. Bottom lifting device: 91. Outer box for bottom lifting, 92. Inner box for bottom lifting, 93. Bottom lifting cylinder, 94. Bottom lifting cylinder rod pin, 95. Bottom lifting cylinder connecting sleeve;

[0041] 10. Connecting devices: 101. Connecting hook body; 102. Connecting fixing base;

[0042] 11. Loading and unloading platform: 111. Loading and unloading platform frame, 112. Clamping cylinder mounting seat, 113. Clamping cylinder;

[0043] 12. Lifting device: 121. Inner square box of lifting device, 122. Outer square box of lifting device, 123. Hydraulic cylinder of lifting device, 124. Hydraulic cylinder rod pin of lifting device, 125. Tail pin of hydraulic cylinder of lifting device.

[0044] 13. Telescopic boom: 131. Telescopic boom outer square box, 132. Telescopic boom inner square box, 133. Telescopic boom cylinder, 134. Boom sprocket, 135. Boom cylinder rod pin, 136. Boom cylinder tail pin.

[0045] 14. Push-to-connector. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Various changes can be made to the implementation scheme as long as the effects of the present invention can be achieved.

[0047] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0048] Reference Figure 1-12 This implementation plan describes a novel pullback platform.

[0049] like Figure 1 and Figure 2 As shown, the retraction platform is positioned close to the old pond side, with multiple hydraulic supports arranged along this side. This new retraction platform includes a front platform 4 and a main platform 8, which are assembled as a single unit; a connecting device 10 is located at the front end of the main platform 8. Specifically, as... Figure 5 As shown, the connecting device 10 includes a connecting fixing seat 102 fixed to the main platform 8, and a connecting hook 101 is connected to the front end of the connecting fixing seat 102. When transferring the hydraulic support, the flatbed truck can be hooked onto the connecting hook 101, so that the flatbed truck and the main platform 8 are connected as one unit, making it easy for the hydraulic support to enter the flatbed truck.

[0050] like Figure 6As shown, the loading and unloading platform 11 includes loading and unloading platform frames 111 fixed on both sides of the main platform 8. Clamping cylinder mounting seats 112 are fixed on the loading and unloading platform frames 111, and clamping cylinders 113 are fixed on the clamping cylinder mounting seats 112. The output ends of the two clamping cylinders 113 are arranged opposite each other. After the flatbed truck is connected to the connecting device 10, the clamping cylinders 113 advance to make the two output ends abut against the flatbed truck, clamping and fixing the flatbed truck. This improves the stability of the flatbed truck when the hydraulic support is pulled onto it, preventing risks such as the flatbed truck overturning, derailing, or rolling backward due to excessive force or friction.

[0051] like Figure 1 and Figure 2 As shown, the end of the front platform 4 furthest from the old pond is connected to a steering platform 3, and the end of the front platform 4 furthest from the main platform 8 is hinged to a pushing device. The pushing device includes a pushing beam 1, with several pushing connecting seats 14 on both sides of the pushing beam 1. The pushing connecting seat 14 closest to the front platform 4 is connected to a connecting box 2, and a propulsion assembly is installed inside the front platform 4. The pushing connecting seat 14 closest to the front platform 4 can be detached and then installed at any position on the same side of the pushing beam 1 to adjust the distance of the entire retraction platform from the old pond.

[0052] It should be noted that in actual use, the pushing device needs to be used in conjunction with the shield frame. The propulsion cylinder of the shield frame is fixed on the pushing beam 1 to provide fixed support for the pushing beam 1.

[0053] like Figure 1 As shown, lifting devices 9 are provided on both sides of the top of the main platform 8, and loading and unloading platforms 11 are mounted on both sides of the front end of the main platform 8. Each loading and unloading platform 11 is equipped with a lifting device 12, and a telescopic boom 13 is fixed on each side of the lifting device 9 and the lifting device 12. When the lifting device 12 is advanced, the telescopic boom 13 is raised around the hinge point with the lifting device.

[0054] like Figure 11 and Figure 12 As shown, the lifting device 9 advances to raise the retraction platform around the hinge point with the pushing device; specifically, as... Figure 3 As shown, the lifting device 9 includes an outer lifting box 91, the bottom surface of which is in contact with the ground, and the outer wall of which is connected to the main platform 8. An inner lifting box 92 is inserted from top to bottom on the top of the outer lifting box 91. A lifting cylinder 93 is hinged to the bottom of the inner cavity of the outer lifting box 91 through a lifting cylinder rod pin 94. The output end of the lifting cylinder 93 is fixed on the inner lifting box 92, and a lifting cylinder connecting sleeve 95 is fixed to the outside of the inner lifting box 92. The lifting cylinder connecting sleeve 95 is hinged to the telescopic boom 13.

[0055] The lifting device 12 includes an outer lifting box 122 fixed on the main platform 8. An inner lifting box 121 is movably inserted into the top of the outer lifting box 122. The inner lifting box 121 is hinged to the telescopic boom 13. A lifting cylinder 123 is hinged to the bottom of the inner cavity of the outer lifting box 122 via a lifting cylinder tail pin 125. The output end of the lifting cylinder 123 is hinged to the inner lifting box 121 via a lifting cylinder rod pin 124. The lifting cylinder 123's forward and retracting operation causes the inner lifting box 121 to rise or fall.

[0056] During operation, the lifting cylinder 93 advances, causing the outer lifting box 91 to rise. As the outer lifting box 91 rises, it drives the retraction platform to lift. At this time, as... Figure 12 As shown, the retraction platform is raised around the hinge point with the pushing device, and the loading / unloading platform 11 is raised to a certain height to accommodate the height of the flatbed truck before the lifting stops. At this time, the lifting device cylinder 123 retracts, causing the output end of the telescopic boom 13 to descend by a certain angle until the telescopic boom 13 is in a horizontal state.

[0057] like Figure 2 and Figure 9 As shown, the front platform 4 includes a transition platform 41 and an arc platform 42, which are assembled into one unit. Both the transition platform 41 and the arc platform 42 have a receiving cavity on the side close to the pushing beam 1, and the propulsion component is located in the receiving cavity. The propulsion component is placed in the receiving cavity to form a hidden design, which reduces the distance between the shield and the retraction platform, reduces the open area on the top of the front platform 4, and reduces the risk of hydraulic support collision during use.

[0058] The propulsion assembly includes a second pushing cylinder 43 disposed within the receiving cavity. The output end of the second pushing cylinder 43 is connected to a telescopic box 44, which is connected to the connecting box 2. After traction of one hydraulic support, when the position of the retraction platform needs to be adjusted to align with the next hydraulic support, the pushing beam 1 is in a fixed state, and the second pushing cylinder 43 propels forward. The reaction force of the second pushing cylinder 43 causes the entire retraction platform to shift one step, aligning the transition platform 41 with the next hydraulic support to be traction.

[0059] like Figure 8 As shown, the directional platform 3 includes a platform base 31. A first pushing cylinder 34 and a slide rail 36 are arranged opposite each other on the platform base 31. A traction slider 32 is fixed to the output end of the first pushing cylinder 34. The traction slider 32 is slidably connected in the slide rail 36. A directional sprocket 35 is rotatably connected to the traction slider 32. A zipper cylinder 33 is fixed to the platform base 31 on one side of the first pushing cylinder 34. A zipper chain is fixed to the output end of the zipper cylinder 33. The zipper chain overlaps the directional sprocket 35. The other end of the zipper chain is hooked on the hydraulic support that needs to be withdrawn.

[0060] The zipper cylinder 33 is initially in the extended state. During operation, the zipper cylinder 33 retracts, pulling the transfer chain back, causing the hydraulic support to move from its original position onto the inclined platform 6 and onto the transition platform 41. After the zipper cylinder 33 retracts to its maximum stroke, the first push cylinder 34 extends, pushing the slider 32 to drive the directional sprocket 35 forward on the slide rail 36. This further causes the transfer chain to pull the hydraulic support onto the transition platform 41 and shift the transfer chain towards the main platform 8, so that the side wall of the support 9 to be retracted is in contact with the guide wheel 5.

[0061] like Figure 1 and Figure 2 As shown, an inclined platform 6 is provided on the side of the transition platform 41 closest to the old pond. Multiple guide wheels 5 are distributed in an arc shape along the surface of the transition platform 41 from the inclined platform 6 to the main platform 8. After the steering platform 3 pulls the hydraulic support onto the transition platform 41, a pull chain is attached to the boom sprocket 134 on each telescopic boom 13. One end of the pull chain needs to be fixed to a fixed object, such as the main platform 8. The telescopic boom cylinder 133 advances, causing the inner square box 132 of the telescopic boom to drive the boom sprocket 134 forward, further moving the hydraulic support forward and rotating it towards the main platform 8. After being pulled into the main platform 8, the final steering is completed.

[0062] like Figure 7 As shown, the telescopic boom 13 includes an outer telescopic boom box 131, an inner lifting device box 121, and a bottom-lifting cylinder connecting sleeve 95 hinged to the outer telescopic boom box 131. One end of the outer telescopic boom box 131 is slidably inserted into the inner telescopic boom box 132. A telescopic boom cylinder 133 is installed inside the outer telescopic boom box 131. One end of the telescopic boom cylinder 133 is connected to the outer telescopic boom box 131 through a boom cylinder tail pin 136, and the other end is connected to the inner telescopic boom box 132 through a boom cylinder rod pin 135. A boom sprocket 134 is rotatably installed at one end of the inner telescopic boom box 132 that extends out of the outer telescopic boom box 131.

[0063] Both telescopic boom cylinders 133 of the two telescopic booms 13 are in the retracted state. The pull chains at the front end of the two telescopic boom cylinders 133 are hooked to the left and right sides of the hydraulic support. The telescopic boom cylinders 133 of the two telescopic booms 13 extend at the same time. The hydraulic support is pushed forward on the main platform 8 and put into the flatbed truck through the pull chains.

[0064] like Figure 1 , Figure 2 and Figure 10As shown, an adjustment device 7 is provided on the side of the outer edge of the arc platform 42 close to the old pond. The adjustment device 7 includes an outer square box 71 fixed to the arc platform 42. An inner square box 72 is slidably inserted into one end of the outer square box 71. An adjustment cylinder 73 is provided inside the outer square box 71. One end of the adjustment cylinder 73 is connected to the outer square box 71 through an adjustment long pin 74, and the other end is connected to the inner square box 72 through an adjustment short pin 75.

[0065] When the eccentricity adjustment cylinder 73 is advancing, it pushes the inner square box 72 outward to ensure that the inner square box 72 is against a fixed object. At this time, the reaction force during the advancement of the eccentricity adjustment cylinder 73 makes the entire retraction device move away from the hydraulic support, so that the retraction device is reset.

[0066] Work style:

[0067] The lifting cylinder 93 advances, causing the outer lifting box 91 to rise. As the outer lifting box 91 rises, it drives the retraction platform to rise as well. Figure 12 As shown, the retraction platform is raised around the hinge point with the pushing device, and the loading and unloading platform 11 is raised to a certain height to adapt to the height of the flatbed truck. The rising stops, and the flatbed truck connecting hook is hooked onto the connecting hook body 101, connecting the flatbed truck and the main platform 8 into one unit. The clamping cylinder 113 pushes forward, causing the two output ends to abut against the flatbed truck, clamping and fixing the flatbed truck.

[0068] The lifting device cylinder 123 retracts, causing the output end of the telescopic boom 13 to descend by a certain angle until the telescopic boom 13 is in a horizontal state.

[0069] When the zipper cylinder 33 in the directional platform 3 extends to its maximum stroke, and the first push cylinder 34 in the directional platform 3 retracts to its minimum stroke, the first pull chain is attached to the directional sprocket 35.

[0070] The chain cylinder 33 in the traction and adjustment platform 3 is retracted to the minimum stroke position, the hydraulic support is pulled onto the transition platform 41, and connected to the guide wheel 5 for adjustment. At this time, the base of the hydraulic support is completely placed on the retraction platform, and the swing angle of the hydraulic support is about 30°.

[0071] Push the first pushing cylinder 34 in the traction and adjustment platform 3 to the maximum stroke position to further adjust the hydraulic support at the guide wheel 5. At this time, the front beam of the hydraulic support extends about 800mm and the swing angle of the hydraulic support is about 45°.

[0072] The first traction chain is disassembled, and the two second traction chains at the telescopic boom 13 are hooked to the lifting holes at the front of the hydraulic support base. The length of the two traction chains at the telescopic boom 13 is adjusted by alternately adjusting the extension of the two telescopic boom cylinders 133, and the hydraulic support is straightened. Then, the two telescopic boom cylinders 133 extend simultaneously, pulling the hydraulic support out and close to the flatbed truck. The two telescopic boom cylinders 133 are retracted, the two second traction chains are disassembled, and the traction chains on the two telescopic booms 13 are hooked back to the lifting holes at the rear of the hydraulic support base. The two telescopic boom cylinders 133 are then extended, and finally, the hydraulic support is loaded onto the flatbed truck.

[0073] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel pullback platform, characterized in that: The retraction platform includes a front platform (4) and a main platform (8), which are assembled into one unit; the front platform (4) is connected to a steering platform (3) at one end away from the old pond, and a pushing device is hinged to the other end of the front platform (4) away from the main platform (8). The main platform (8) is provided with lifting devices (9) on both sides of the top. The main platform (8) is equipped with loading and unloading platforms (11) on both sides of the front end. Each loading and unloading platform (11) is provided with a lifting device (12). Each side of the lifting device (9) and lifting device (12) is fixed with a telescopic boom (13). The lifting device (9) pushes the platform forward to lift the retraction platform with the hinge point with the pushing device as the axis. The lifting device (9) includes an outer lifting box (91), the bottom surface of which is in contact with the ground, the outer wall of which is connected to the main platform (8), and an inner lifting box (92) inserted from top to bottom on the top of the outer lifting box (91). The bottom of the inner cavity of the outer lifting box (91) is hinged to a lifting cylinder (93) via a lifting cylinder rod pin (94). The output end of the lifting cylinder (93) is fixed on the inner lifting box (92), and a lifting cylinder connecting sleeve (95) is fixed on the outer side of the inner lifting box (92). The lifting cylinder connecting sleeve (95) is hinged on the telescopic boom (13). The lifting device (12) includes an outer box (122) fixed on the main platform (8), an inner box (121) movably inserted into the top of the outer box (122), the inner box (121) hinged to the telescopic boom (13), and a lifting cylinder (123) hinged to the bottom of the inner cavity of the outer box (122) via a lifting cylinder tail pin (125). The output end of the lifting cylinder (123) is hinged to the inner box (121) via a lifting cylinder rod pin (124).

2. The novel pullback platform according to claim 1, characterized in that: The main platform (8) is provided with a connecting device (10) at the front end. The connecting device (10) includes a connecting fixing seat (102) fixed to the main platform (8). A connecting hook (101) is connected to the front end of the connecting fixing seat (102).

3. The novel pullback platform according to claim 1, characterized in that: The telescopic boom (13) includes an outer telescopic boom box (131), an inner box (121) of the lifting device and a bottom lifting cylinder connecting sleeve (95) are hinged to the outer telescopic boom box (131), an inner telescopic boom box (132) is slidably inserted into one end of the outer telescopic boom box (131), a telescopic boom cylinder (133) is provided inside the outer telescopic boom box (131), one end of the telescopic boom cylinder (133) is connected to the outer telescopic boom box (131) through the boom cylinder tail pin (136), and the other end is connected to the inner telescopic boom box (132) through the boom cylinder rod pin (135), and a boom sprocket (134) is rotatably provided at one end of the inner telescopic boom box (132) extending out of the outer telescopic boom box (131).

4. The novel pullback platform according to claim 1, characterized in that: The pushing device includes a pushing beam (1), and several pushing connecting seats (14) are provided on both sides of the pushing beam (1). The pushing connecting seat (14) close to the front platform (4) is connected to a connecting box (2). The front platform (4) is provided with a propulsion component.

5. The novel pullback platform according to claim 4, characterized in that: The front platform (4) includes a transition platform (41) and an arc platform (42), which are assembled into one unit. Both the transition platform (41) and the arc platform (42) have a receiving cavity on the side close to the pushing beam (1). The pushing component is located in the receiving cavity. The pushing component includes a second pushing cylinder (43) located in the receiving cavity. The output end of the second pushing cylinder (43) is connected to a telescopic box (44). The telescopic box (44) is connected to the connecting box (2).

6. A novel pullback platform according to claim 5, characterized in that: The transition platform (41) has an inclined platform (6) on the side close to the old pond.

7. A novel pullback platform according to claim 6, characterized in that: The transition platform (41) has multiple guide wheels (5) arranged in an arc shape along the direction from the inclined platform (6) to the main platform (8).

8. A novel pullback platform according to claim 5, characterized in that: An adjustment device (7) is provided on the side of the outer edge of the arc platform (42) close to the old pond. The adjustment device (7) includes an outer square box (71) fixed to the arc platform (42). An inner square box (72) is slidably inserted into one end of the outer square box (71). An adjustment cylinder (73) is provided inside the outer square box (71). One end of the adjustment cylinder (73) is connected to the outer square box (71) through an adjustment long pin (74), and the other end is connected to the inner square box (72) through an adjustment short pin (75).

9. A novel pullback platform according to claim 1, characterized in that: The loading and unloading platform (11) includes a loading and unloading platform frame (111) fixed on both sides of the main platform (8). A clamping cylinder mounting seat (112) is fixed on the loading and unloading platform frame (111), and a clamping cylinder (113) is fixed on the clamping cylinder mounting seat (112). The output ends of the two clamping cylinders (113) are arranged opposite to each other.

10. A novel pullback platform according to claim 1, characterized in that: The steering platform (3) includes a platform base (31), on which a first pushing cylinder (34) and a slide rail (36) are arranged opposite to each other. A traction slider (32) is fixed at the output end of the first pushing cylinder (34), and the traction slider (32) is slidably connected in the slide rail (36). A steering sprocket (35) is rotatably connected to the traction slider (32). A zipper cylinder (33) is fixed on the platform base (31) on one side of the first pushing cylinder (34). A pull chain is fixed at the output end of the zipper cylinder (33), and the pull chain overlaps the steering sprocket (35).

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