A bridge cone precast block transport device

Abstract

This invention belongs to the field of transportation equipment technology, and specifically relates to a transportation device for precast bridge cone blocks. The device includes an upper base and a lower base. A control plate is installed on the side wall of the upper base. It also includes multiple guide rail assemblies, all disposed between the upper and lower bases, with the side walls of both bases hinged to the side walls of the guide rail assemblies on the same side. Each guide rail assembly is assembled in series. Multiple support frames are hinged to the bottom of their respective guide rail assemblies. This invention not only eliminates the need for manual unloading but also allows for the even distribution of precast blocks on a slope, facilitating worker arrangement and installation. It is flexible and lightweight, effectively improving the safety and efficiency of laying precast bridge cone blocks. Furthermore, it can slow down the sliding of precast blocks to prevent collisions and can, to some extent, remove defective precast blocks.

Description

Technical Field

[0001] This invention belongs to the field of transportation equipment technology, and in particular relates to a transportation device for precast bridge cone blocks. Background Technology

[0002] Bridge cones are wedge-shaped slope structures that connect the roadbed on both sides of the abutment. They are cone-shaped and serve to stabilize the connection and resist erosion. Because they are susceptible to rainwater and water flow erosion, precast blocks need to be laid for protection. These blocks are spliced ​​together to form a protective layer, which enhances the stability and durability of the bridge.

[0003] Because the bridge cone is sloping (e.g.) Figure 1 As shown in the figure, when laying precast blocks on a slope, workers usually carry the precast blocks to the slope manually for laying. In order to improve the convenience of construction, a transportation device can be set up on the slope to assist in the transportation of precast blocks. For example, a bridge cone precast block transportation device disclosed in patent publication number CN218663844U can transport precast blocks to the slope in batches through a sliding rail structure. Workers do not need to move back and forth along the slope, which improves the convenience of transportation to a certain extent. However, after the precast blocks are transported to the slope, they still need to be unloaded manually. Due to the inclination angle of the slope, the stability of workers is not good when unloading on the slope. This not only significantly increases the workload, but also poses safety hazards such as slipping and falling. In addition, the position of the basket needs to be adjusted many times during transportation to accurately connect with the unloading point. The operation process is relatively cumbersome, the transportation efficiency of precast blocks is low, and it affects the construction progress. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a bridge cone precast block transportation device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bridge cone precast block transportation device, comprising an upper base and a lower base, wherein a control plate is installed on the side wall of the upper base, and further comprising:

[0006] Multiple guide rail assemblies are disposed between the upper base and the lower base, and the side walls of the upper base and the lower base are hinged to the side walls of the guide rail assemblies on the same side. The guide rail assemblies are assembled together in series.

[0007] Multiple support frames are hinged to the bottom of the corresponding guide rail assembly, and multiple support rollers are rotatably arranged inside each support frame. Each support frame is equipped with a series support assembly.

[0008] Multiple retractable units are disposed on the side wall of the guide rail assembly, and the retractable units are used to pull the support frame to move.

[0009] A buffer unit is disposed inside the upper base and guide rail assembly, the buffer unit being used to decelerate the preform as it slides along the support roller.

[0010] Preferably, the guide rail assembly includes a left side plate and a right side plate disposed on opposite sides above the support frame, and one side of the support frame is hinged to the right side plate. Multiple connecting columns are fixed between the left side plate and the right side plate. The upper base and the lower base are both hinged to the side walls of the left side plate and the right side plate on the same side. A detachable protective net is installed between the left side plate and the right side plate at a position above the connecting columns.

[0011] Preferably, the series support assembly includes a plug rod fixedly installed at the end of the support frame, and the end of the support frame away from the plug rod has a plurality of plug holes that match the plug rod.

[0012] Preferably, the retractable unit includes an L-shaped plate fixedly installed on the side wall of the left side plate, and a translation plate is provided on the inner side wall of the L-shaped plate. A horizontal electric push rod for pushing the translation plate to move is fixedly inserted into the side wall of the L-shaped plate. Two trapezoidal blocks are fixed on the side of the translation plate away from the horizontal electric push rod. The side walls of the left side plate and the support frame are provided with slots that cooperate with the trapezoidal blocks. At least three retractable units are provided, and two of them are respectively located on the left side plate near the upper base and the lower base. The remaining retractable units are all located on the left side plate away from the upper base and the lower base.

[0013] Preferably, the buffer unit includes a mounting groove on the top of the upper base, a winding mechanism is installed inside the mounting groove, and a baffle is installed at the movable end of the winding mechanism. Sliders are fixedly installed on both side walls of the baffle. Slide grooves matching the sliders are opened on the side walls of the left and right side plates. The baffle slides along the interior of each guide rail assembly through the sliders and slide grooves. The winding mechanism is electrically connected to the control board.

[0014] Preferably, the winding mechanism includes a winding rod rotatably disposed inside the mounting groove, and two winding wheels are fixedly sleeved on the rod wall of the winding rod. Both winding wheels are wound with steel wire rope. A winding motor is fixedly installed on the side wall of the upper base, and the winding motor drives the winding rod to rotate. The winding motor is electrically connected to the control board.

[0015] Preferably, tension detectors are fixedly installed at both ends of the side wall of the baffle near the upper base. A protective sleeve is fitted over the outer side of the tension detector, and the protective sleeve is fixedly connected to the side wall of the baffle. The ends of the two wire ropes away from the winding wheel slide through the ends of the protective sleeves and are fixedly connected to the detection ends of the tension detectors. The control board controls the winding motor to work according to the electrical signal fed back by the tension detectors. A voice prompt device is fixedly installed in the wall of the mounting slot. The control board controls the voice prompt device to work according to the strength of the electrical signal fed back by the tension detectors.

[0016] Preferably, the retractable unit further includes a horizontal plate fixedly installed on the side wall of the right side plate, and a vertical push electric push rod is fixedly inserted into the end face of the horizontal plate. A push block is fixedly attached to the movable end of the vertical push electric push rod, and a columnar steel rod is fixedly inserted into the side wall of the push block. Extension blocks are fixedly attached to both sides of the side wall of the right side plate at the positions of the push blocks, and the side wall of the extension blocks is provided with a strip-shaped hole that matches the columnar steel rod.

[0017] Compared with existing technologies, the advantages of a bridge cone precast block transport device are:

[0018] 1. Through the coordinated arrangement of the upper base, lower base, control plate, multiple guide rail assemblies, multiple support frames, multiple support rollers, multiple series support assemblies, and multiple pull-out units, the precast blocks are laid flat inside each guide rail assembly, and then the support frames are opened at once, allowing the precast blocks to fall in rows on the slope. This not only eliminates the need for manual unloading but also ensures that the precast blocks are evenly distributed on the slope, making it easier for workers to arrange and install them. Furthermore, the device can be assembled according to the slope angle and length, making it flexible and convenient to use. It also reduces the number of adjustments to the transportation device, effectively improving the safety and efficiency of laying bridge cone precast blocks.

[0019] 2. The buffer unit can decelerate the precast blocks as they slide down, effectively preventing them from being damaged due to excessive speed and improving the safety of the device.

[0020] 3. By combining the set tensile detector and protective sleeve, the buffer unit can be automatically controlled based on the weight of the precast block, without manual operation, further increasing the ease of use. At the same time, with the set voice prompt, the precast block can be automatically estimated based on the pressure of the precast block on the baffle, and personnel can be promptly reminded to remove the defective precast block. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a bridge cone;

[0022] Figure 2 This is a structural schematic diagram of a bridge cone precast block transportation device provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the guide rail assembly of a bridge cone precast block transportation device provided by the present invention;

[0024] Figure 4 This is a top view of the internal structure of the mounting groove of a bridge cone precast block transportation device provided by the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the pulling unit of a bridge cone precast block transportation device provided by the present invention;

[0026] Figure 6 This is a schematic diagram of the connection structure between the baffle and the left side plate of a bridge cone precast block transportation device provided by the present invention;

[0027] Figure 7 This is a top view of the baffle structure of a bridge cone precast block transportation device provided by the present invention;

[0028] Figure 8 This invention provides Figure 7 Enlarged view of part A in the image;

[0029] Figure 9 This is a schematic diagram of the connection structure between the pushing block and the extension block of a bridge cone precast block transportation device provided by the present invention.

[0030] In the diagram: 1 Upper base, 2 Lower base, 3 Control panel, 4 Guide rail assembly, 41 Left side plate, 42 Right side plate, 43 Connecting column, 44 Protective net, 5 Support frame, 6 Support roller, 7 Series support assembly, 71 Insert rod, 72 Insert hole, 8 Retracting unit, 81 L-shaped plate, 82 Translation plate, 83 Horizontal electric push rod, 84 Trapezoidal block, 85 Slot, 9 Buffer unit, 91 Mounting slot, 92 Baffle, 93 Slider, 94 Slide groove, 10 Rewinding mechanism, 101 Rewinding rod, 102 Rewinding wheel, 103 Wire rope, 104 Rewinding motor, 11 Tension detector, 12 Protective sleeve, 13 Voice prompt, 14 Horizontal plate, 15 Vertical electric push rod, 16 Push block, 17 Columnar steel rod, 18 Extension block, 19 Strip hole. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figures 2-9The bridge cone precast block transport device shown includes an upper base 1 and a lower base 2. A control plate 3 is installed on the side wall of the upper base 1. It also includes multiple guide rail assemblies 4, which are disposed between the upper base 1 and the lower base 2. The side walls of the upper base 1 and the lower base 2 are hinged to the side walls of the guide rail assemblies 4 on the same side. The guide rail assemblies 4 are assembled together in series. Each guide rail assembly 4 includes a left side plate 41 and a right side plate 42 disposed on opposite sides above a support frame 5. One side of the support frame 5 is hinged to the right side plate 42. Multiple connecting posts 43 are fixed between side plate 41 and right side plate 42. The upper base 1 and lower base 2 are both hinged to the side walls of the left side plate 41 and right side plate 42 on the same side. A detachable protective net 44 is installed between the left side plate 41 and right side plate 42 above the connecting posts 43. The connecting posts 43 can ensure the connection strength between the left side plate 41 and right side plate 42. They are made of high-strength lightweight alloy materials, such as aluminum alloy. The protective net 44 can prevent the slag generated when the precast block moves down and shakes from splashing onto the outside of the guide rail assembly 4.

[0033] Multiple support frames 5 are hinged to the bottom of the corresponding guide rail assembly 4, and multiple support rollers 6 are rotatably arranged inside each support frame 5 (the support frame 5 is a rectangular plate, and a rectangular through hole is opened on the end face of the rectangular plate, and the support rollers 6 are installed inside the rectangular through hole). Each support frame 5 is equipped with a series support assembly 7. The series support assembly 7 includes a plug rod 71 fixedly installed at the end of the support frame 5, and multiple plug holes 72 matching the plug rod 71 are opened at the end of the support frame 5 away from the plug rod 71, which can facilitate the series connection of each support frame 5. The plug rod 71 can be installed on the support frame 5 near the upper base 1.

[0034] The retractable unit 8 includes an L-shaped plate 81 fixedly installed on the side wall of the left side plate 41, and a translation plate 82 is provided on the inner side wall of the L-shaped plate 81. A horizontal electric push rod 83 for pushing the translation plate 82 to move is fixedly inserted into the side wall of the L-shaped plate 81. Two trapezoidal locking blocks 84 are fixed on the side of the translation plate 82 away from the horizontal electric push rod 83. The side walls of the left side plate 41 and the support frame 5 are provided with slots 85 that cooperate with the trapezoidal locking blocks 84. At least three retractable units 8 are provided, and two of them are respectively located on the left side plate 41 near the upper base 1 and the lower base 2. The remaining retractable units 8 are all located on the left side plate 41 away from the upper base 1 and the lower base 2. Through the locking action of the trapezoidal locking blocks 84 and the slots 85, it can be ensured that the end of the support frame 5 away from the hinge can maintain sufficient support force, and ensure that the support for the precast block is stable enough.

[0035] The retractable unit 8 also includes a horizontal plate 14 fixedly installed on the side wall of the right side plate 42, and a vertical push electric push rod 15 is fixedly inserted into the end face of the horizontal plate 14. A push block 16 is fixedly fixed to the movable end of the vertical push electric push rod 15, and a columnar steel rod 17 is fixedly inserted into the side wall of the push block 16. Extension blocks 18 are fixed on both sides of the side wall of the right side plate 42 at the position of the push block 16, and the side wall of the extension block 18 is provided with a strip hole 19 that matches the columnar steel rod 17. The push block 16 is moved by the vertical push electric push rod 15. With the help of the columnar steel rod 17 and the extension block 18, the opening speed of the support frame 5 can be slowed down when the support frame 5 is opened, so as to avoid the support frame 5 from being deformed by impact when it is opened quickly.

[0036] The buffer unit 9 is located inside the upper base 1 and the guide rail assembly 4. The buffer unit 9 is used to decelerate the precast block when it slides along the support roller 6. The buffer unit 9 includes a mounting groove 91 opened on the top of the upper base 1. A winding mechanism 10 is installed inside the mounting groove 91, and a baffle 92 is installed on the movable end of the winding mechanism 10. Slider 93 is fixedly installed on both side walls of the baffle 92. The side walls of the left side plate 41 and the right side plate 42 are provided with sliding grooves 94 that match the slider 93. The baffle 92 slides along the interior of each guide rail assembly 4 through the slider 93 and the sliding grooves 94. The winding mechanism 10 is electrically connected to the control board 3, which can buffer and decelerate the precast block to prevent the precast block from moving down too fast.

[0037] The winding mechanism 10 includes a winding rod 101 rotatably disposed inside the mounting groove 91, and two winding wheels 102 are fixedly sleeved on the rod wall of the winding rod 101. Steel wire rope 103 is wound around both winding wheels 102. A winding motor 104 is fixedly installed on the side wall of the upper base 1, and the winding motor 104 drives the winding rod 101 to rotate. The winding motor 104 is electrically connected to the control board 3, which can facilitate stable pulling of the baffle 92.

[0038] Tension detectors 11 are fixedly installed at both ends of the side wall of the baffle 92 near the upper base 1. A protective sleeve 12 is fitted on the outside of the tension detector 11 and the protective sleeve 12 is fixedly connected to the side wall of the baffle 92. The ends of the two steel wire ropes 103 away from the winding wheel 102 slide through the end of the protective sleeve 12 and are fixedly connected to the detection end of the tension detector 11. The control board 3 controls the winding motor 104 to work according to the electrical signal fed back by the tension detector 11, which does not require manual control and improves the convenience of use.

[0039] A voice prompt device 13 is fixedly installed in the wall of the mounting slot 91. The control board 3 controls the voice prompt device 13 to work according to the electrical signal strength fed back by the tension detector 11. Based on the pressure of the precast block, it can roughly estimate whether the precast block is qualified, thereby eliminating unqualified precast blocks to a certain extent and avoiding unqualified precast blocks from being laid on the bridge cone slope, which would affect the reinforcement and protection of the slope.

[0040] The operating principle of this invention is explained as follows: The upper base 1 is installed at a suitable position on the top of the bridge cone slope, and then the lower base 2 is installed at a suitable position at the bottom of the bridge cone slope. The upper base 1 and the lower base 2 are leveled (universal support feet are installed at the four corners of the bottom of the upper base 1 and the lower base 2, which can be used for leveling the upper base 1 and the lower base 2). Then, according to the length of the slope, a suitable number of guide rail assemblies 4 are selected (the left side plate 41 and the right side plate 42 of each guide rail assembly 4 are 0.5 meters long), and they are assembled together in series (the side walls of the left side plate 41 and the right side plate 42 are provided with mounting parts with threaded holes, and the mounting parts can be locked and fixed by bolts) to form a complete guide rail channel (the upper base 1 and the lower base 2 are each hinged with a guide rail assembly 4, so the remaining guide rail assemblies 4 are first assembled in series, and then assembled together with the guide rail assemblies 4 hinged to the upper base 1 and the lower base 2).

[0041] Workers at the top of the slope place the precast block inside the uppermost guide rail assembly 4, positioning it on the support roller 6. Under its own weight, the precast block moves towards the foot of the slope via the support roller 6 within each guide rail assembly 4. Initially, the baffle 92 is inside the uppermost guide rail assembly 4. Therefore, as the precast block moves downwards, it contacts the side wall of the baffle 92. Under the pressure of the precast block, the baffle 92 generates tension on the wire rope 103 via the tension detector 11. Upon detecting the pressure, the tension detector 11 immediately sends an electrical signal to the control board 3, which then controls the winding motor 104 to operate. The winding motor 104 drives the winding wheel 102 to rotate at a certain angle. (An encoder is installed at the drive end of the winding motor 104. The encoder can detect the drive angle of the winding motor 104. The rotation angle can be set according to the specifications of the precast block through the control board 3.) At this time, the winding motor 104 drives the winding wheel 102 to release the wire rope 103 a certain distance. The baffle 92 will slide down a certain distance under the pressure of the precast block. Then the worker can put in another precast block. As the pressure of the precast block increases, the winding motor 104 will work again. Repeat the operation to lay rows of precast blocks inside the guide rail assembly 4.

[0042] When the worker at the foot of the slope sees the precast block reach the foot of the slope, he can notify the worker at the top of the slope. At this time, the worker at the top of the slope will stop placing the precast block and start the unloading operation through the control panel 3. At this time, the control panel 3 will control each horizontal electric push rod 83 to perform a timed pull-back action, so that the trapezoidal locking block 84 can be driven out of the slot 85 by the translation plate 82. At the same time, the vertical push electric push rod 15 will perform a timed retraction action. After the trapezoidal locking block 84 is released from the slot 85, the locking of the side of the support frame 5 away from the hinge end will fail. And when the vertical push electric push rod 15 drives the push block 16 and the column steel rod 17 to move upward, the column steel rod 17 moves upward along the strip hole 19. Therefore, at this time, the extension block 18 and the support frame 5 begin to rotate around the hinge point, and the support frame 5 moves closer to the left side plate 4. One end of the support frame 5 rotates and opens towards the ground, while the other end of the support frame 5 is hinged to the right side plate 42. Therefore, the support frame 5 is inclined. Under the action of the precast block's own weight, the precast block can slide down the inclined support frame 5 onto the slope, thus completing one unloading operation. Since the precast blocks are arranged in rows on the support frame 5, they are also basically distributed in rows when sliding down the slope, so that the precast blocks can be distributed relatively evenly on the slope, and no manual unloading is required. Workers only need to arrange the falling precast blocks in a specific way. After a single unloading is completed, the control plate 3 first controls the movable end of the vertical push electric push rod 15 to move back to reset, and then controls the horizontal electric push rod 83 to push the trapezoidal card block 84 back into the card slot 85.

[0043] Before transporting the precast blocks, workers at the top of the slope select a precast block that is undamaged and has no large internal voids (this can be confirmed by tapping the precast block with a tool). When this precast block is placed inside the guide rail assembly 4, it applies pressure to the baffle 92. At this time, the control board 3 records the current tension through the tension detector 11 and sets a floating value based on the current tension. The floating value is generally set to 5% of the current tension (it can also be set through the control board 3, generally not exceeding 10%). Each time a precast block is placed subsequently, the tension detector 11 detects an increase in tension. The control board 3 then calculates the increase in tension each time and compares this increase with the set value. Compared with the floating value, it is possible to estimate whether the currently placed precast block is qualified. For example, when the precast block has large defects or internal voids, the weight of the precast block will be significantly reduced, so its pressure on the baffle 92 will be smaller. At this time, the increase in tensile force detected by the tensile detector 11 will be lower than the set floating value. The control board 3 will immediately control the voice prompt device 13 to work. The voice prompt device 13 will issue a voice prompt. The workers on the top of the slope need to remove the precast block that was just placed and check its qualification in the future. Through the above settings, unqualified precast blocks can be eliminated to a certain extent, so as to avoid unqualified precast blocks being laid on the bridge cone slope and affecting the reinforcement and protection of the slope.

[0044] After the precast blocks are placed in a single row, workers at the top and bottom of the slope can move the device to the next location (the upper base 1, lower base 2, guide rail assembly 4, support frame 5, and other components can all be made of lightweight materials, such as reinforced polypropylene, lightweight aluminum alloy, etc., to reduce the weight of the entire device and facilitate personnel lifting and transporting), and continue the transportation of precast blocks.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bridge cone precast block transport device, comprising an upper base (1) and a lower base (2), wherein a control plate (3) is mounted on the side wall of the upper base (1), characterized in that, Also includes: Multiple guide rail assemblies (4) are disposed between the upper base (1) and the lower base (2), and the side walls of the upper base (1) and the lower base (2) are hinged to the side wall of the guide rail assembly (4) on the same side. Each of the guide rail assemblies (4) is assembled together in series. Multiple support frames (5) are hinged to the bottom of the corresponding guide rail assembly (4), and multiple support rollers (6) are rotatably arranged inside each support frame (5). Each support frame (5) is equipped with a series support assembly (7). Multiple retractable units (8) are provided on the side wall of the guide rail assembly (4), and the retractable units (8) are used to pull the support frame (5) to move; A buffer unit (9) is disposed inside the upper base (1) and the guide rail assembly (4), the buffer unit (9) being used to decelerate the preform as it slides along the support roller (6); The guide rail assembly (4) includes a left side plate (41) and a right side plate (42) disposed on opposite sides above the support frame (5), and one side of the support frame (5) is hinged to the right side plate (42). Multiple connecting posts (43) are fixed between the left side plate (41) and the right side plate (42). The upper base (1) and the lower base (2) are both hinged to the side walls of the left side plate (41) and the right side plate (42) on the same side. A detachable protective net (44) is installed between the left side plate (41) and the right side plate (42) above the connecting posts (43). The buffer unit (9) includes a mounting groove (91) opened on the top of the upper base (1). A winding mechanism (10) is installed inside the mounting groove (91), and a baffle (92) is installed on the movable end of the winding mechanism (10). A slider (93) is fixedly installed on both side walls of the baffle (92). The side walls of the left side plate (41) and the right side plate (42) are provided with a sliding groove (94) that matches the slider (93). The baffle (92) slides along the interior of each guide rail assembly (4) through the slider (93) and the sliding groove (94). The winding mechanism (10) is electrically connected to the control board (3). The winding mechanism (10) includes a winding motor (104) and two steel wire ropes (103). Tension detectors (11) are fixedly installed on both ends of the side wall of the baffle (92) near the upper base (1), and the steel wire ropes (103) are fixedly connected to the detection end of the tension detectors (11). The control board (3) controls the winding motor (104) to work according to the electrical signal fed back by the tension detectors (11).

2. The bridge cone precast block transportation device according to claim 1, characterized in that, The series support assembly (7) includes a plug rod (71) fixedly installed at the end of the support frame (5), and the end of the support frame (5) away from the plug rod (71) is provided with a plurality of plug holes (72) that match the plug rod (71).

3. A bridge cone precast block transport device according to claim 2, characterized in that, The retractable unit (8) includes an L-shaped plate (81) fixedly installed on the side wall of the left side plate (41), and a translation plate (82) is provided on the inner side wall of the L-shaped plate (81). A horizontal electric push rod (83) for pushing the translation plate (82) to move is fixedly inserted into the side wall of the L-shaped plate (81). Two trapezoidal blocks (84) are fixed on the side of the translation plate (82) away from the horizontal electric push rod (83). The side walls of the left side plate (41) and the support frame (5) are provided with slots (85) that cooperate with the trapezoidal blocks (84). At least three retractable units (8) are provided, and two of the retractable units (8) are respectively located on the left side plate (41) near the upper base (1) and the lower base (2). The remaining retractable units (8) are all located on the left side plate (41) away from the upper base (1) and the lower base (2).

4. The bridge cone precast block transport device according to claim 1, characterized in that, The winding mechanism (10) includes a winding rod (101) rotatably disposed inside the mounting groove (91), and two winding wheels (102) are fixedly sleeved on the rod wall of the winding rod (101). The wire rope (103) is wound around the winding wheels (102). The winding motor (104) is fixedly installed on the side wall of the upper base (1), and the winding motor (104) drives the winding rod (101) to rotate. The winding motor (104) is electrically connected to the control board (3).

5. A bridge cone precast block transport device according to claim 4, characterized in that, The outer side of the tension detector (11) is covered with a protective sleeve (12), and the protective sleeve (12) is fixedly connected to the side wall of the baffle (92). The ends of the two steel wire ropes (103) away from the winding wheel (102) slide through the end of the protective sleeve (12) and are fixedly connected to the detection end of the tension detector (11). A voice prompt device (13) is fixedly installed in the groove wall of the mounting groove (91). The control board (3) controls the voice prompt device (13) to work according to the electrical signal strength fed back by the tension detector (11).

6. A bridge cone precast block transport device according to claim 1, characterized in that, The retractable unit (8) also includes a horizontal plate (14) fixedly installed on the side wall of the right side plate (42), and a vertical push electric push rod (15) is fixedly inserted into the end face of the horizontal plate (14). A push block (16) is fixedly installed at the movable end of the vertical push electric push rod (15), and a columnar steel rod (17) is fixedly inserted into the side wall of the push block (16). An extension block (18) is fixedly installed on both sides of the side wall of the right side plate (42) at the push block (16), and a strip hole (19) matching the columnar steel rod (17) is opened on the side wall of the extension block (18).

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