Positioning device and construction method for improving qualified rate of bridge deck pavement layer

Abstract

This invention relates to the field of building construction, and more particularly to a positioning device and construction method for improving the pass rate of bridge deck pavement. It provides a positioning device and construction method that improves the stability between the device and the bridge railing, and effectively winds up the measuring rope, thereby improving the pass rate of bridge deck pavement. The positioning device and construction method for improving the pass rate of bridge deck pavement includes a housing, first pulleys, cylinders, connecting rods, and handles. Four first pulleys are connected to the top of the housing, and cylinders are connected to the lower right side of the housing. Connecting rods are connected to the bottom of the cylinder extension rods, and symmetrical handles are connected to the top of the housing. This invention improves the stability of the device during measurement and movement by pulling the sliding frame, preventing the device from falling due to improper operation. Simultaneously, the winding pulleys can wind up the rope, reducing the phenomenon of rope tangling and knotting.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a positioning device and construction method for improving the pass rate of bridge deck pavement. Background Technology

[0002] The bridge deck pavement layer is a protective layer that is poured onto the base panel of the bridge deck. Its main function is to prevent the bridge deck panel from being directly damaged when vehicles run over it. When laying the bridge deck pavement layer, attention should be paid to laying it flat to ensure the stability of vehicle driving.

[0003] In existing technologies, positioning devices are generally used to locate and detect bridge deck pavement layers. However, during use, it is difficult to fit the device closely to the bridge railing, which may pose a risk of the device falling off. In addition, the pull rope used for detection cannot be wound up, which may cause the pull rope to get tangled, affecting the detection.

[0004] Therefore, it is now necessary to develop a positioning device and construction method that can improve the stability between the device and the bridge deck railing and effectively reel in the measuring rope, thereby improving the pass rate of the bridge deck pavement layer, in order to solve the above-mentioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of existing devices, such as difficulty in fitting them to bridge railings during use, the risk of the device falling off, and the inability to retract the measuring rope, which could cause knots and affect the detection, the technical problem to be solved is: to provide a positioning device and construction method that can improve the stability between the device and the bridge railing and effectively retract the measuring rope, thereby improving the pass rate of bridge pavement.

[0006] The technical solution of this invention is:

[0007] A positioning device for improving the pass rate of bridge deck pavement includes a housing, first pulleys, cylinders, connecting rods, handles, an adapter mechanism, and a winding mechanism. There are two housings, each with four first pulleys connected to the top inside. A cylinder is connected to the lower right side of each housing, and a connecting rod is connected to the bottom of the cylinder extension rod. A symmetrical handle is connected to the top of each housing. The housing is equipped with an adapter mechanism for clamping the width of the road guardrail, and the connecting rod is equipped with a winding mechanism for winding the measuring rope.

[0008] In one embodiment, the adapter mechanism includes a sliding frame, a second pulley, a sliding block, and a first spring. The sliding frame is slidably connected to both the left and right sides of the housing. Two second pulleys are rotatably connected to the sides of the sliding frame that are close to each other. Sliding blocks are connected to both the left and right sides of the housing. The sliding blocks are slidably connected to the sliding frame. There is a certain friction between the sliding blocks and the housing. Two first springs are connected between the sliding frame and the sliding blocks. The first springs are wound around the sliding frame. The ends of the first springs that are close to the housing are connected to the sliding blocks, and the ends of the first springs that are away from the housing are connected to the sliding frame.

[0009] In one embodiment, the winding mechanism includes a winding wheel, a rotating shaft, a throttle, and a pull rope. The rotating shaft is rotatably connected to the side of the connecting rods that are close to each other. The winding wheel is connected to the rotating shaft. The throttle is rotatably connected to the top of the rotating shaft. A pull rope is wound between the winding wheels.

[0010] In one embodiment, a limiting mechanism is also included. The limiting mechanism includes a first fixed block, a cam, a push rod, a sliding rod, a second spring, and a rubber block. Two first fixed blocks are connected to the top of each housing. A cam is rotatably connected between the two first fixed blocks on each housing. A push rod is connected to the top of each cam. A sliding rod is symmetrically connected to the upper part of each housing. A second spring is connected between each sliding rod and the housing. The second spring is wound around the sliding rod. The top of each second spring is connected to the housing, and the bottom of each second spring is connected to the sliding rod. A rubber block is connected between the two sliding rods on each housing. The rubber block can be pushed by the cam.

[0011] In one embodiment, a guiding mechanism is also included. The guiding mechanism includes a fixed frame, a connector, and a rotating ring. The lower part of the connecting rod is connected to the fixed frame. The ends of the fixed frames that are close to each other are connected to the connector. The connector is rotatably connected to the rotating ring. The pull rope passes through the rotating ring.

[0012] In one embodiment, an adjustment mechanism is also included, which includes a second fixed block, an adjustment rod, a connecting frame, and a limiting rod. The second fixed block is connected to each sliding block, and the adjustment rod is connected to each second fixed block. The top of the adjustment rod is connected to the connecting frame, and the upper sides of the left and right sides of the outer casing are connected to the limiting rod.

[0013] In one embodiment, an assembly mechanism is also included. The assembly mechanism includes wedge pins, limiting blocks, fixing rods, and third springs. The upper rear part of the front housing is connected with symmetrical wedge pins, and the upper front part of the rear housing is connected with four fixing rods. Each pair of adjacent fixing rods forms a group, and each group of fixing rods is slidably connected with a limiting block. The limiting blocks can engage with the wedge pins. Two third springs are connected between the limiting blocks and the fixing rods, and the third springs are wound around the fixing rods.

[0014] In one embodiment, the push rod has a T-shaped design, which facilitates push operation.

[0015] In one embodiment, the present invention also proposes a construction method for improving the pass rate of bridge deck pavement, the method comprising the following steps:

[0016] S1. First, separate the two outer shells. To separate them, simply pull the limit block upwards and then pull the two outer shells apart. After they are separated, turn the throttle to make the rotating shaft rotate, which will cause the winding wheel to release the pull rope.

[0017] S2. Then, depending on the condition of the bridge deck railing, adjust the position of the sliding frame and the second pulley by pulling the connecting frame so that the second pulley can fit against the bridge deck railing. Then push the handle to make the device start to move. You can then observe the state of the rope and the bridge deck pavement to determine whether the bridge deck pavement is flat.

[0018] S3. When the bridge deck pavement is uneven, push the push rod to make the cam rotate, so that the rubber blocks can contact the bridge deck railing to fix the device and prevent it from sliding. Then mark and record the uneven parts of the bridge deck pavement or directly adjust the uneven parts of the bridge deck pavement.

[0019] S4. After the test is completed, the two shells are joined together by the limit block and the wedge pin, and then the pull rope is wound up by the winding wheel.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention improves the stability of the device during measurement and movement by pulling the sliding frame so that the second pulley can fit tightly with the bridge railing, thus preventing the device from falling due to improper operation. At the same time, the winding wheels can wind up the rope, reducing the phenomenon of rope tangling and knotting.

[0022] 2. This invention rotates the cam by pushing the push rod, which in turn causes the rubber block to contact the bridge railing, increasing the friction between the device and the bridge railing, thereby achieving a fixing effect on the device and preventing accidental slippage.

[0023] 3. By pulling the connecting frame, the sliding frame can move synchronously, thereby allowing the second pulley to be pulled and adjusted together, which improves the accuracy of the second pulley position adjustment and effectively avoids the situation of inconsistent adjustment height of the second pulley.

[0024] 4. The present invention uses a limiting block and a wedge-shaped pin to lock the two outer shells together, thereby facilitating handling and transportation. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0027] Figure 3 This is a three-dimensional structural diagram of the adaptor mechanism of the present invention.

[0028] Figure 4 This is a three-dimensional structural diagram of the winding mechanism and guiding mechanism of the present invention.

[0029] Figure 5 This is a schematic diagram of the first three-dimensional structure of the limiting mechanism of the present invention.

[0030] Figure 6 This is a schematic diagram of a second three-dimensional structure of the limiting mechanism of the present invention.

[0031] Figure 7 This is a three-dimensional structural diagram of the adjustment mechanism of the present invention.

[0032] Figure 8 This is a three-dimensional structural diagram of the assembly mechanism of the present invention.

[0033] In the attached drawings, the following are the reference numerals: 1-outer shell, 2-first pulley, 3-cylinder, 4-connecting rod, 5-handle, 6-adapter mechanism, 61-sliding frame, 62-second pulley, 63-sliding block, 64-first spring, 7-winding mechanism, 71-winding wheel, 72-rotating shaft, 73-handle, 74-pull rope, 8-limiting mechanism, 81-first fixing block, 82-cam, 83-push rod, 84-sliding rod, 85-second spring, 86-rubber block, 9-guide mechanism, 91-fixed frame, 92-connector, 93-rotating ring, 10-adjusting mechanism, 101-second fixing block, 102-adjusting rod, 103-connecting frame, 104-limiting rod, 11-assembly mechanism, 111-wedge pin, 112-limiting block, 113-fixing rod, 114-third spring. Detailed Implementation

[0034] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] This invention proposes a positioning device to improve the pass rate of bridge deck pavement layers, specifically, as follows: Figure 1 and Figure 2As shown, it includes a housing 1, first pulleys 2, cylinders 3, connecting rods 4, handles 5, adapter mechanisms 6, and winding mechanisms 7. There are two housings 1, which are used to place them on both sides of the road for operation. The top of each housing 1 is connected to four first pulleys 2 to facilitate the movement of the housing 1. The lower right side of each housing 1 is connected to a cylinder 3 by bolts. The bottom of the telescopic rod of each cylinder 3 is connected to a connecting rod 4. The top of each housing 1 is connected to symmetrical handles 5 by bolts to facilitate the handling of the housing 1. The housing 1 is equipped with an adapter mechanism 6 for adapting and clamping the width of the road guardrail. The connecting rods 4 are equipped with winding mechanisms 7 for winding the measuring rope.

[0036] like Figure 1 and Figure 3 As shown, the adapter mechanism 6 includes a sliding frame 61, a second pulley 62, a sliding block 63, and a first spring 64. The sliding frame 61 is slidably connected to both sides of the outer shell 1. Two second pulleys 62 are rotatably connected to the side of the sliding frame 61 that is close to each other. The sliding frame 61 and the second pulleys 62 cooperate with each other to clamp and adapt the guardrail. Sliding blocks 63 are connected to both sides of the outer shell 1. The sliding blocks 63 are slidably connected to the sliding frame 61. There is a certain friction between the sliding blocks 63 and the outer shell 1. Two first springs 64 are connected between the sliding frame 61 and the sliding blocks 63. The first springs 64 are wound around the sliding frame 61. The end of the first spring 64 that is close to the outer shell 1 is connected to the sliding block 63. The end of the first spring 64 that is away from the outer shell 1 is connected to the sliding frame 61. The first springs 64 play a buffering role for the sliding frame 61.

[0037] like Figure 1 and Figure 4 As shown, the winding mechanism 7 includes a winding wheel 71, a rotating shaft 72, a throttle 73, and a pull rope 74. The rotating shaft 72 is rotatably connected to the side of the connecting rod 4 that is close to each other. The winding wheel 71 is connected to the rotating shaft 72. The throttle 73 is rotatably connected to the top of the rotating shaft 72, which makes it easy for people to control the winding wheel 71 to wind up. The pull rope 74 is wound between the winding wheels 71 for measuring the level of the paving layer.

[0038] This device can be used when horizontal positioning detection of the bridge deck pavement layer is required. First, the two outer shells 1 are respectively engaged with the guardrails on both sides of the bridge deck. When engaging, the sliding frame 61 needs to be pulled to the side away from each other. The first spring 64 is compressed and the second pulley 62 will also move to the side away from each other, so that the outer shell 1 can be engaged with the bridge deck guardrail. Then, the sliding frame 61 is released. Under the action of the first spring 64, the sliding frame 61 slides to the side closer to each other, so that the second pulley 62 can contact the bridge deck guardrail. If the bridge deck guardrail cannot contact the second pulley 62 at this time, the position of the sliding frame 61 needs to be adjusted according to the condition of the bridge deck guardrail so that the second pulley 62 can contact the bridge deck guardrail.

[0039] After both outer shells 1 are fixed, the handle 73 needs to be pulled up and rotated, so that the handle 73 drives the rotating shaft 72 to rotate, which in turn causes the winding wheel 71 to rotate, thereby stretching the rope 74 to taut. This facilitates the horizontal positioning measurement of the bridge deck pavement layer. During the measurement, the person only needs to pull the outer shell 1 through the handle 5. At this time, the first pulley 2 and the second pulley 62 will both drive the device to move. Then, the person can check and judge the bridge deck pavement layer according to the condition of the rope 74, record the uneven bridge deck pavement layer, or directly adjust the uneven parts of the bridge deck pavement layer.

[0040] After the positioning measurement is completed, the outer shell 1 is disengaged from the bridge railing. At this time, the sliding frame 61 needs to be pulled to the side away from each other. The first spring 64 is compressed and the second pulley 62 will also move to the side away from each other, so that the outer shell 1 can be disengaged from the bridge railing. Then, the outer shell 1 is removed from the bridge railing. Then, the rotating shaft 72 is rotated by turning the handle 73, which drives the winding wheel 71 to start rotating and rewind the rope 74 back to its original position.

[0041] In summary, by pulling the sliding frame 61, the second pulley 62 can be tightly fitted with the bridge railing, which improves the stability of the device during measurement and movement, and prevents the device from falling due to improper operation. At the same time, the winding wheel 71 can wind up the pull rope 74, which can reduce the phenomenon of the pull rope 74 getting tangled and knotted.

[0042] like Figure 1 , Figure 5 and Figure 6As shown, it also includes a limiting mechanism 8, which includes a first fixed block 81, a cam 82, a push rod 83, a sliding rod 84, a second spring 85, and a rubber block 86. Two first fixed blocks 81 are connected to the top of each housing 1. A cam 82 is rotatably connected between the two first fixed blocks 81 on each housing 1. A push rod 83 is connected to the top of each cam 82. The push rod 83 has a T-shaped design, facilitating push operation. A symmetrical sliding rod 84 is slidably connected to the upper part of each housing 1. The sliding rod 84... Each outer shell 1 is connected to a second spring 85, which is wound around a sliding rod 84. The top of each second spring 85 is connected to the outer shell 1, and the bottom of each second spring 85 is connected to the sliding rod 84. The second spring 85 acts as a buffer and reset mechanism for the sliding rod 84. A rubber block 86 is connected between the two sliding rods 84 on each outer shell 1. The rubber block 86 can be pushed by the cam 82. The rubber block 86 can effectively enhance the friction and prevent the outer shell 1 from sliding accidentally due to the tilt of the bridge railing when it stops moving.

[0043] When people use this device to perform positioning and inspection of the bridge deck pavement, if any non-compliance is found, the operation of the device needs to be stopped. If the bridge deck railing has a certain tilt angle at this time, the device will slide due to the action of the first pulley 2 and the second pulley 62, which may cause the pull rope 74 to be moved, affecting the inspection. Therefore, when people need to stop the device from moving, the push rod 83 needs to be pulled to the right, so that the cam 82 rotates clockwise, which pushes and squeezes the rubber block 86. At this time, the rubber block 86 will drive the sliding rod 84 to slide downward, and the second spring 85 will be stretched by force.

[0044] When the rubber blocks 86 are in contact with the bridge deck railing, the friction between the device and the bridge deck railing is increased, so that the device can be fixed in place and will not slide. After the non-compliant bridge deck pavement layer is inspected, it is necessary to continue to inspect the bridge deck pavement layer. At this time, it is only necessary to push the push rod 83 to the left to reset. At this time, the cam 82 will rotate counterclockwise to reset, so that the rubber block 86 will no longer be squeezed. Under the action of the second spring 85, the sliding rod 84 will drive the rubber block 86 to slide upward to reset, so that the device can be released from the fixed state and continue to slide.

[0045] In summary, by pushing the push rod 83 to rotate the cam 82, the rubber block 86 comes into contact with the bridge railing, increasing the friction between the device and the bridge railing, thereby achieving the effect of fixing the device and preventing the device from sliding accidentally.

[0046] like Figure 1 and Figure 4As shown, it also includes a guide mechanism 9, which includes a fixed frame 91, a connector 92 and a rotating ring 93. The lower part of the connecting rod 4 is connected to the fixed frame 91, and the ends of the fixed frames 91 that are close to each other are connected to the connector 92. The connector 92 is rotatably connected to the rotating ring 93. The pull rope 74 passes through the rotating ring 93. The rotating ring 93 is used to guide the pull rope 74 and prevent the pull rope 74 from getting tangled or knotted.

[0047] When installing the pull rope 74, it is necessary to pass the pull rope 74 through the rotating ring 93 and then connect it to the winding wheel. During use, when people rotate the pull rope 74 to release it, the rotating ring 93 can be used to guide the pull rope 74 to avoid the pull rope 74 from piling up and getting tangled. At the same time, when the pull rope 74 is wound by the winding wheel 71, the rotating ring 93 can also prevent the pull rope 74 from bending and getting tangled, thus avoiding the situation where the pull rope 74 cannot be retrieved.

[0048] like Figure 1 and Figure 7 As shown, it also includes an adjustment mechanism 10, which includes a second fixing block 101, an adjustment rod 102, a connecting frame 103, and a limiting rod 104. The sliding block 63 is bolted to the second fixing block 101, and the second fixing block 101 is connected to the adjustment rod 102. The top of the adjustment rod 102 is connected to the connecting frame 103. The upper sides of the left and right sides of the outer shell 1 are connected to the limiting rod 104. The limiting rod 104 is made of elastic material, which can be bent under force and engage with the adjustment rod 102, thereby locking and fixing the adjustment rod 102.

[0049] When the second pulleys 62 cannot contact the bridge railing, the position and height of the second pulleys 62 need to be adjusted so that they can contact the bridge railing. At this time, simply pull the connecting frame 103 upward, so that the adjusting rod 102 drives the second fixed block 101 to move upward, which in turn drives the sliding block 63 to slide upward. The sliding block 63 drives the sliding frame 61 to slide upward, thereby adjusting the position of the second pulleys 62. At the same time, when the adjusting rod 102 moves upward, the limiting rod 104 will continuously engage with the adjusting rod 102 until the position of the second pulleys 62 is adjusted. Then, release the connecting frame 103. At this time, the limiting rod 104 can lock the adjusting rod 102 to prevent the second pulleys 62 from sliding downward.

[0050] After the test is completed, simply move the limit rod 104 gently to disengage it from the adjusting rod 102. At this time, under the gravity of the sliding frame 61 and the sliding block 63, the second fixed block 101 and the adjusting rod 102 will move downwards to reset. Finally, release the limit rod 104 so that it resets itself. In summary, by pulling the connecting frame 103, the sliding frame 61 can move synchronously, so that the second pulley 62 can be pulled and adjusted together, improving the accuracy of the second pulley 62 position adjustment and effectively avoiding the situation of inconsistent adjustment height of the second pulley 62.

[0051] like Figure 1 and Figure 8 As shown, it also includes an assembly mechanism 11, which includes wedge pins 111, limiting blocks 112, fixing rods 113 and third springs 114. The upper rear part of the front shell 1 is bolted with symmetrical wedge pins 111. The upper front part of the rear shell 1 is connected with four fixing rods 113. Every two adjacent fixing rods 113 form a group. Each group of fixing rods 113 is slidably connected with a limiting block 112. The limiting blocks 112 can engage with the wedge pins 111, thereby fixing and locking the shells 1 together. Two third springs 114 are connected between the limiting blocks 112 and the fixing rods 113. The third springs 114 are wrapped around the fixing rods 113 and play a buffering and resetting role for the limiting blocks 112.

[0052] To improve the portability of this device, the two outer shells 1 can be assembled after use. At this time, simply pull the limiting blocks 112 upwards, and the third springs 114 will be compressed. Then, bring the two outer shells 1 closer together so that the wedge pins 111 move to the underside of the limiting blocks 112. Then, release the limiting blocks 112. Under the action of the third springs 114, the limiting blocks 112 slide downwards to reset and engage with the wedge pins 111, thereby locking and fixing the two outer shells 1 for easy handling.

[0053] When this device is needed for testing, simply pull the limit blocks 112 upwards, compress the third springs 114, and disengage the wedge pins 111 from the limit blocks 112. Then, separate the two outer shells 1. After separation, release the limit blocks 112, and under the action of the third springs 114, the limit blocks 112 will slide downwards to reset. In summary, by engaging the limit blocks 112 with the wedge pins 111, the two outer shells 1 can fit together and lock, thereby facilitating handling and transportation.

[0054] Furthermore, this invention also proposes a construction method to improve the pass rate of bridge deck pavement layers, the method comprising the following steps:

[0055] S1. First, separate the two outer shells 1. To separate them, simply pull the limit block 112 upwards and then pull the two outer shells 1 apart. After they are separated, turn the handle 73 to make the rotating shaft 72 rotate, which will cause the winding wheel 71 to release the pull rope 74.

[0056] S2. Then, depending on the condition of the bridge deck railing (the two separate shells 1 are located on the two opposite bridge deck railings respectively), the position of the sliding frame 61 and the second pulley 62 is adjusted by pulling the connecting frame 103 so that the second pulley 62 can fit against the bridge deck railing. Then, push the handle 5 to make the device start to move. Then, by observing the state of the pull rope 74 and the bridge deck pavement, it can be determined whether the bridge deck pavement is flat.

[0057] S3. When the bridge deck pavement is uneven, push the push rod 83 to make the cam 84 rotate, so that the rubber blocks 86 can contact the bridge deck railing to fix the device and prevent the device from sliding. Then mark and record the uneven parts of the bridge deck pavement or directly adjust the uneven parts of the bridge deck pavement.

[0058] S4. After the test is completed, the two outer shells 1 are engaged by the limiting block 112 and the wedge pin 111, and then the pull rope 74 is wound up by the winding wheel 71.

[0059] The beneficial effects of this invention are as follows:

[0060] 1. This invention improves the stability of the device during measurement and movement by pulling the sliding frame so that the second pulley can fit tightly with the bridge railing, thus preventing the device from falling due to improper operation. At the same time, the winding wheels can wind up the rope, reducing the phenomenon of rope tangling and knotting.

[0061] 2. This invention rotates the cam by pushing the push rod, which in turn causes the rubber block to contact the bridge railing, increasing the friction between the device and the bridge railing, thereby achieving a fixing effect on the device and preventing accidental slippage.

[0062] 3. By pulling the connecting frame, the sliding frame can move synchronously, thereby allowing the second pulley to be pulled and adjusted together, which improves the accuracy of the second pulley position adjustment and effectively avoids the situation of inconsistent adjustment height of the second pulley.

[0063] 4. The present invention uses a limiting block and a wedge-shaped pin to lock the two outer shells together, thereby facilitating handling and transportation.

[0064] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A positioning device for improving the pass rate of bridge deck pavement, comprising a housing (1), first pulleys (2), cylinders (3), connecting rods (4), and handles (5), wherein there are two housings (1), each housing (1) has four first pulleys (2) connected to the top of its interior, each housing (1) has a cylinder (3) connected to the lower right side of its interior, each cylinder (3) has a connecting rod (4) connected to the bottom of its telescopic rod, and each housing (1) has a symmetrical handle (5) connected to its top. It also includes an adapter mechanism (6) and a winding mechanism (7). The outer shell (1) is provided with an adapter mechanism (6) for adapting and clamping the width of the road guardrail, and the connecting rod (4) is provided with a winding mechanism (7) for winding the measuring rope. The adapter mechanism (6) includes a sliding frame (61), a second pulley (62), a sliding block (63), and a first spring (64). The sliding frame (61) is slidably connected to both sides of the outer shell (1). Two second pulleys (62) are rotatably connected to the side of the sliding frame (61) that is close to each other. The sliding block (63) is connected to both sides of the outer shell (1). The sliding block (63) is slidably connected to the sliding frame (61). There is friction between the sliding block (63) and the outer shell (1). Two first springs (64) are connected between the sliding frame (61) and the sliding block (63). The first springs (64) are wrapped around the sliding frame (61). The end of the first spring (64) close to the outer shell (1) is connected to the sliding block (63). The end of the first spring (64) away from the outer shell (1) is connected to the sliding frame (61). The device also includes a limiting mechanism (8), which includes a first fixed block (81), a cam (82), a push rod (83), a sliding rod (84), a second spring (85), and a rubber block (86). The top of the outer shell (1) is connected to two first fixed blocks (81). A cam (82) is rotatably connected between the two first fixed blocks (81) on each outer shell (1). A push rod (83) is connected to the top of the cam (82). A sliding rod (84) is symmetrically connected to the upper part of the outer shell (1). A second spring (85) is connected between the sliding rod (84) and the outer shell (1). The second spring (85) is wrapped around the sliding rod (84). The top of the second spring (85) is connected to the outer shell (1), and the bottom of the second spring (85) is connected to the sliding rod (84). A rubber block (86) is connected between the two sliding rods (84) on each outer shell (1). The rubber block (86) can be pushed by the cam (82). The device also includes an adjustment mechanism (10), which includes a second fixed block (101), an adjustment rod (102), a connecting frame (103), and a limiting rod (104). The sliding block (63) is connected to the second fixed block (101), and the second fixed block (101) is connected to the adjustment rod (102). The top of the adjustment rod (102) is connected to the connecting frame (103), and the upper sides of the left and right sides of the outer shell (1) are connected to the limiting rod (104). When the second pulley (62) cannot contact the bridge railing, the position and height of the second pulley (62) need to be adjusted so that the second pulley (62) can contact the bridge railing. At this time, the connecting frame (103) only needs to be pulled upward, so that the adjusting rod (102) drives the second fixed block (101) to move upward, and then the second fixed block (101) drives the sliding block (63) to slide upward. The sliding block (63) will drive the sliding frame (61) to slide upward, so that the position of the second pulley (62) is adjusted. At the same time, when the adjusting rod (102) moves upward, the limiting rod (104) will continuously engage with the adjusting rod (102) until the position of the second pulley (62) is adjusted. Then the connecting frame (103) is released. At this time, the limiting rod (104) can lock the adjusting rod (102) to prevent the second pulley (62) from sliding downward.

2. The positioning device for improving the pass rate of bridge deck pavement as described in claim 1, characterized in that, The winding mechanism (7) includes a winding wheel (71), a rotating shaft (72), a throttle (73), and a pull rope (74). The connecting rods (4) are rotatably connected to the rotating shaft (72) on their respective sides. The winding wheel (71) is connected to the rotating shaft (72). The throttle (73) is rotatably connected to the top of the rotating shaft (72). The pull rope (74) is wound between the winding wheels (71).

3. The positioning device for improving the pass rate of bridge deck pavement as described in claim 2, characterized in that, It also includes a guide mechanism (9), which includes a fixed frame (91), a connector (92) and a rotating ring (93). The lower part of the connecting rod (4) is connected to the fixed frame (91), and the ends of the fixed frames (91) that are close to each other are connected to the connector (92). The connector (92) is rotatably connected to the rotating ring (93), and the pull rope (74) passes through the rotating ring (93).

4. The positioning device for improving the pass rate of bridge deck pavement as described in claim 3, characterized in that, It also includes an assembly mechanism (11), which includes a wedge pin (111), a limiting block (112), a fixing rod (113) and a third spring (114). The upper rear part of the front shell (1) is connected with symmetrical wedge pins (111), and the upper front part of the rear shell (1) is connected with four fixing rods (113). Each pair of adjacent fixing rods (113) forms a group, and each group of fixing rods (113) is slidably connected with a limiting block (112). The limiting block (112) can be engaged with the wedge pin (111). Two third springs (114) are connected between the limiting block (112) and the fixing rod (113). The third springs (114) are all wrapped around the fixing rod (113).

5. The positioning device for improving the pass rate of bridge deck pavement as described in claim 4, characterized in that, The push rod (83) has a T-shaped design and is designed to facilitate pushing operations.

6. A construction method for improving the pass rate of bridge deck pavement, characterized in that, The method of using the positioning device as described in claim 5 above for construction includes the following steps: S1. First, separate the two outer shells (1). When separating, simply pull the limit block (112) upwards and then pull the two outer shells (1) apart. After separating, turn the handle (73) to make the rotating shaft (72) rotate, which will cause the winding wheel (71) to release the pull rope (74). S2. Then, depending on the condition of the bridge deck railing, the position of the sliding frame (61) and the second pulley (62) is adjusted by pulling the connecting frame (103) so that the second pulley (62) can fit against the bridge deck railing. Then, push the handle (5) to make the device start to move. By observing the state of the pull rope (74) and the bridge deck pavement, it can be determined whether the bridge deck pavement is flat. S3. When the bridge deck pavement is uneven, push the push rod (83) to make the cam (82) rotate, so that the rubber blocks (86) can all contact the bridge deck railing, so as to fix the device and prevent the device from sliding. Then mark and record the uneven parts of the bridge deck pavement or directly adjust the uneven parts of the bridge deck pavement. S4. After the test is completed, the two outer shells (1) are joined together by the limiting block (112) and the wedge pin (111), and then the pull rope (74) is wound up by the winding wheel (71).

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