Steel cable tensioning device for guardrail breakdown van

Abstract

The utility model discloses a steel cable tensioning device for a guardrail breakdown van, which relates to the technical field of road maintenance and comprises a bottom table, the upper side of the bottom table is fixedly connected with a limiting frame, and the inner side of the bottom table is movably sleeved with a lifting mechanism. Two clamping mechanisms which are symmetrically distributed left and right are fixedly connected to the position, close to the upper side, of the front side of the lifting mechanism, and pulleys are rotationally connected to the position, close to the bottom, of the front side of the bottom table. According to the steel cable tensioning device for the guardrail breakdown van, the hydraulic lifting crane on the breakdown van drives the steel cable to move upwards, the pulley limits the steel cable, so that the whole steel cable is tensioned to be in a tightened state, the clamping mechanism fixes the steel cable, and the worm is rotated to enable the clamping mechanism to move up and down, so that the steel cable is tensioned. According to the device, the steel cable can be manually tensioned, the steel cable is tensioned by means of a crane and manual control, the operation is simple, the working efficiency is improved, the traditional maintenance manpower is saved, and the labor intensity of maintenance personnel is reduced.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance technology, and in particular to a steel cable tensioning device for guardrail repair vehicles. Background Technology

[0002] Flexible steel cable guardrails often break due to vehicle collisions or deform and sag over time, losing or greatly reducing their protective safety, and need to be tightened to restore their protective safety.

[0003] The existing technology has the following problems:

[0004] When existing emergency repair vehicle personnel perform traditional repairs, they need to rely on external forces. Traditionally, they often use auxiliary tools such as "hoisting hoists" that require a lot of manpower. These tools are bulky, inefficient, and can easily cause personal injury to the workers. Utility Model Content

[0005] This utility model provides a steel cable tensioning device for guardrail repair vehicles to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A steel cable tensioning device for a guardrail repair vehicle includes a base platform, a limit frame fixedly connected to the upper side of the base platform, a lifting mechanism movably sleeved on the inner side of the base platform, two clamping mechanisms symmetrically distributed on the left and right sides fixedly connected to the front side of the lifting mechanism near the upper side, and a pulley rotatably connected to the front side of the base platform near the bottom.

[0008] The lifting mechanism includes a worm gear, the outer side of which is rotatably connected to the inner side of the front wall of the base near the lower side. A worm wheel is meshed with the upper side of the worm gear, and a transmission assembly is movably sleeved on the inner side of the worm wheel. A first gear is movably sleeved on the outer side of the transmission assembly near the rear side. A second gear, symmetrically distributed on both sides, is meshed with the left side of the first gear. A lifting platform is movably sleeved on the inner side of the base, and racks are fixedly connected to the left and right sides of the inner side of the lifting platform.

[0009] Preferably, the transmission assembly includes a rotating rod, the rear end of which is rotatably connected to a transmission rod, the outer side of which is movably sleeved on the inner side of the worm gear and the inner side of the first gear, and a first spring is movably mounted on the rear side of the transmission rod.

[0010] Preferably, a limiting sleeve is movably sleeved on the middle of the outer side of the rotating rod, the outer side of the limiting sleeve is fixedly connected to the inner side of the front wall of the base, and a plurality of annularly distributed limiting grooves are provided on the outer side of the rotating rod near the front side, and the protrusion on the inner side of the limiting sleeve near the front side is slidably connected to the inner side of the limiting groove.

[0011] Preferably, the limiting groove is U-shaped, and a torsion spring is movably installed between the inner side of the limiting sleeve and the outer side of the rotating rod.

[0012] Preferably, the clamping mechanism includes a base, a lifting platform is fixedly connected to the rear side of the base near the upper side of the front side, two hydraulic rods are fixedly connected to the front and rear sides of the base, a clamping platform is movably sleeved on the inner side of the base, a push block is slidably connected to the side of the clamping platform away from the first gear, and the front and rear ends of the push block are fixedly connected to the lower ends of the hydraulic rods.

[0013] Preferably, the clamping platform is fixedly connected to a locking tooth on the side away from the push block.

[0014] Preferably, two limiting rods are fixedly connected to the side of the clamping platform away from the locking teeth, near the upper and lower sides. The outer side of the limiting rod is movably sleeved on the inner side of the wall of the base away from the locking teeth. A second spring is movably sleeved on the outer side of both limiting rods, and the second spring is located on the outer side of the base. A circular plate is fixedly connected to the end of both limiting rods away from the clamping platform.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] 1. This utility model provides a steel cable tensioning device for guardrail repair vehicles. It employs a base, hydraulic rod, clamping platform, push block, locking teeth, bottom platform, limit frame, lifting mechanism, worm gear, worm wheel, transmission assembly, first gear, second gear, lifting platform, rack, and clamping mechanism. The steel cable is moved upwards by a hydraulic lifting crane on the repair vehicle, and pulleys restrict the cable, causing it to be taut. The clamping mechanism fixes the cable, and rotating the worm gear causes the clamping mechanism to move up and down, allowing the device to manually tighten the cable. The device uses both crane and manual control methods to tighten the cable, simplifying operation, improving work efficiency, saving traditional maintenance manpower, and reducing the labor intensity of maintenance personnel.

[0017] 2. This utility model provides a steel cable tensioning device for guardrail repair vehicles. It adopts the cooperation of a lifting mechanism, worm gear, worm wheel, transmission assembly, rotating rod, transmission rod, first spring, limiting sleeve, limiting groove, first gear, second gear, lifting platform, rack and pinion, and clamping mechanism. By pushing the rotating rod backward, the transmission rod is disengaged from the inner side of the worm wheel, allowing the clamping mechanism to move down quickly and return to its initial relative height with the base platform. The operation is convenient and quick, avoiding the time-consuming and labor-intensive problem of manual rotation for resetting. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the lifting mechanism of this utility model;

[0021] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the transmission component of this utility model;

[0022] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the clamping mechanism of this utility model.

[0023] In the diagram: 1. Base platform; 2. Limiting frame; 3. Lifting mechanism; 31. Worm gear; 32. Worm wheel; 33. Transmission assembly; 331. Rotating rod; 332. Transmission rod; 333. First spring; 334. Limiting sleeve; 335. Limiting groove; 34. First gear; 35. Second gear; 36. Lifting platform; 37. Rack; 4. Clamping mechanism; 41. Base; 42. Hydraulic rod; 43. Clamping platform; 44. Push block; 45. Clamping tooth; 46. Limiting rod; 47. Circular plate; 48. Second spring; 5. Pulley. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1-5 As shown, a steel cable tensioning device for a guardrail repair vehicle includes a base platform 1, a limit frame 2 fixedly connected to the upper side of the base platform 1, a lifting mechanism 3 movably sleeved on the inner side of the base platform 1, two clamping mechanisms 4 symmetrically distributed on the left and right sides fixedly connected to the front side of the lifting mechanism 3 near the upper side, and a pulley 5 rotatably connected to the front side of the base platform 1 near the bottom.

[0026] The lifting mechanism 3 includes a worm gear 31. The outer side of the worm gear 31 is rotatably connected to the inner side of the front wall of the base 1 near the lower side. The upper side of the worm gear 31 is meshed with a worm wheel 32. The inner side of the worm wheel 32 is movably sleeved with a transmission assembly 33. The outer side of the transmission assembly 33 is movably sleeved with a first gear 34 near the rear side. The left side of the first gear 34 is meshed with a second gear 35 that is symmetrically distributed on both sides. The inner side of the base 1 is movably sleeved with a lifting platform 36. The inner left and right sides of the lifting platform 36 are fixedly connected with racks 37.

[0027] It should be noted that the steel cable is passed through the lower side of the pulley 5, and the limiting frame 2 is fixed on the repair vehicle. The hydraulic lifting crane on the repair vehicle can be used to lift the steel cable to achieve tension. The clamping mechanism 4 is used to fix it. Rotating the worm 31 causes the worm 31 to drive the worm wheel 32 to rotate. The worm wheel 32 drives the first gear 34 to rotate through the transmission component 33. The first gear 34 drives the second gear 35 to rotate. The second gear 35 rotates, and the side of the first gear 34 and the second gear 35 that are far apart from each other meshes with the rack 37. The rotation of the first gear 34 and the second gear 35 causes the rack 37 to move up and down, which causes the lifting platform 36 to move the clamping mechanism 4 upward, so that the device can be manually tightened.

[0028] like Figure 4 As shown, the transmission assembly 33 includes a rotating rod 331, and a transmission rod 332 is rotatably connected to the rear end of the rotating rod 331. The outer side of the transmission rod 332 is movably sleeved on the inner side of the worm gear 32 and the inner side of the first gear 34. A first spring 333 is movably installed on the rear side of the transmission rod 332.

[0029] It should be noted that when the transmission rod 332 is simultaneously inside the worm gear 32 and the first gear 34, the rotation of the worm gear 32 can drive the first gear 34 to rotate by the transmission rod 332. Pushing the rotating rod 331 back causes the transmission rod 332 to disengage from the inside of the worm gear 32, so that the worm gear 32 can no longer drive the first gear 34 to rotate. This allows the clamping mechanism 4 to move down on its own. The first spring 333 pushes the transmission rod 332 forward, so that when the rotating rod 331 is released, it can drive the transmission rod 332 to reset.

[0030] like Figure 4 As shown, a limiting sleeve 334 is movably sleeved on the middle of the outer side of the rotating rod 331. The outer side of the limiting sleeve 334 is fixedly connected to the inner side of the front wall of the base 1. Several annularly distributed limiting grooves 335 are provided on the outer side of the rotating rod 331 near the front side. The protrusion on the inner side of the limiting sleeve 334 near the front side is slidably connected to the inner side of the limiting groove 335.

[0031] It should be noted that the limiting sleeve 334 relies on the limiting groove 335 to limit the rotating rod 331, so that the rotating rod 331 cannot rotate on its own, thus preventing the rotating rod 331 from rotating when the transmission rod 332 rotates.

[0032] like Figure 4 As shown, the limiting groove 335 is U-shaped, and a torsion spring is movably installed between the inner side of the limiting sleeve 334 and the outer side of the rotating rod 331.

[0033] It should be noted that the shape of the limiting groove 335 allows the limiting groove 335 to limit the position of the rotating rod 331, so that the transmission rod 332 can switch between two states: the inner side of the worm gear 32 being disengaged and the inner side of the worm gear 32 being inserted. The torsion spring is used to stabilize the state of the rotating rod 331.

[0034] like Figure 5 As shown, the clamping mechanism 4 includes a base 41. The rear side of the base 41 is fixedly connected to the front side of the lifting platform 36 near the upper side. The front and rear sides of the base 41 are fixedly connected to two hydraulic rods 42 distributed in the front and rear. The inner side of the base 41 is movably sleeved with a clamping platform 43. The side of the clamping platform 43 away from the first gear 34 is slidably connected to a push block 44. The front and rear ends of the push block 44 are fixedly connected to the lower ends of the hydraulic rods 42.

[0035] It should be noted that the hydraulic rod 42 drives the push block 44 to move up and down. The side of the clamping platform 43 away from the first gear 34 is an inclined plane, so that when the clamping platform 43 moves up, the two clamping platforms 43 move closer to each other to clamp the steel cable.

[0036] like Figure 5 As shown, a locking tooth 45 is fixedly connected to the side of the clamping platform 43 away from the push block 44.

[0037] It should be noted that the 45 teeth are used to increase the friction between the clamping platform 43 and the steel cable, and to prevent the steel cable from sliding between the clamping platforms 43.

[0038] like Figure 5 As shown, two limiting rods 46 are fixedly connected to the side of the clamping platform 43 away from the locking teeth 45, near the upper and lower sides. The outer side of the limiting rods 46 is movably sleeved on the inner side of the wall of the base 41 away from the locking teeth 45. A second spring 48 is movably sleeved on the outer side of each of the two limiting rods 46, and the second spring 48 is located on the outer side of the base 41. A circular plate 47 is fixedly connected to the end of each of the two limiting rods 46 away from the clamping platform 43.

[0039] It should be noted that when the second spring 48 pushes the rack 37, causing the push block 44 to move down, the second spring 48 drives the clamp 43 to reset.

[0040] The working principle of this utility model is as follows: First, the steel cable is passed through the lower side of the pulley 5, and the limiting frame 2 is fixed on the repair vehicle. The hydraulic lifting crane on the repair vehicle can drive the steel cable to rise, thereby tightening the steel cable. It is then fixed by the clamping mechanism 4. Rotating the worm gear 31 causes the worm gear 32 to rotate. The worm gear 32 drives the first gear 34 to rotate via the transmission component 33. The first gear 34 drives the second gear 35 to rotate. The sides of the first gear 34 and the second gear 35 that are far apart from each other are engaged with the rack 37. The rotation of the first gear 34 and the second gear 35 causes the rack 37 to move up and down. This causes the lifting platform 36 to move the clamping mechanism 4 upwards, allowing the device to manually tighten the steel cable. The hydraulic lifting crane on the repair vehicle moves the steel cable upwards, and the pulley 5 restricts the cable, causing it to be taut. The clamping mechanism 4 fixes the cable, and by rotating the worm gear 31, the clamping mechanism 4 moves up and down, allowing the device to manually tighten the cable. The cable is tightened using both crane and manual control methods. This simple operation improves work efficiency, saves traditional maintenance manpower, and reduces the labor intensity of maintenance personnel. Finally, when the transmission rod 332 is simultaneously in... When the worm gear 32 and the first gear 34 are inside each other, the rotation of the worm gear 32 can drive the first gear 34 to rotate via the transmission rod 332. Pushing the rotating rod 331 causes the transmission rod 332 to disengage from the inside of the worm gear 32, preventing the worm gear 32 from driving the first gear 34 to rotate. This allows the clamping mechanism 4 to move downwards on its own. The first spring 333 pushes the transmission rod 332 forward, causing the rotating rod 331 to be released and thus reset the transmission rod 332. The limiting sleeve 334, relying on the limiting groove 335, limits the rotating rod 331, preventing it from rotating on its own and avoiding the transmission rod 331 from moving downwards. When 32 rotates, it drives the rotating rod 331 to rotate. The shape of the limiting groove 335 allows the limiting groove 335 to limit the position of the rotating rod 331, so that the transmission rod 332 can switch between two states: disengaging from the inner side of the worm wheel 32 and inserting into the inner side of the worm wheel 32. The torsion spring is used to stabilize the state of the rotating rod 331. By pushing the rotating rod 331 backward, the transmission rod 332 disengages from the inner side of the worm wheel 32, so that the clamping mechanism 4 can move down quickly and return to the initial relative height with the base 1 quickly. The operation is convenient and quick, avoiding the time-consuming and labor-intensive problem of manual rotation for resetting.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel cable tensioning device for a guardrail repair vehicle, comprising a base (1), characterized in that: The upper side of the base (1) is fixedly connected to a limit frame (2), the inner side of the base (1) is movably sleeved with a lifting mechanism (3), the front side of the lifting mechanism (3) is fixedly connected to two clamping mechanisms (4) symmetrically distributed on the left and right, and the front side of the base (1) is rotatably connected to a pulley (5) near the bottom. The lifting mechanism (3) includes a worm gear (31). The outer side of the worm gear (31) is rotatably connected to the inner side of the front wall of the base (1) near the lower side. The upper side of the worm gear (31) is meshed with a worm wheel (32). The inner side of the worm wheel (32) is movably sleeved with a transmission assembly (33). The outer side of the transmission assembly (33) is movably sleeved with a first gear (34) near the rear side. The left side of the first gear (34) is meshed with a second gear (35) symmetrically distributed on both sides. The inner side of the base (1) is movably sleeved with a lifting platform (36). The inner left and right sides of the lifting platform (36) are fixedly connected with racks (37).

2. The steel cable tensioning device for a guardrail repair vehicle according to claim 1, characterized in that: The transmission assembly (33) includes a rotating rod (331), and a transmission rod (332) is rotatably connected to the rear end of the rotating rod (331). The outer side of the transmission rod (332) is movably sleeved on the inner side of the worm gear (32) and the inner side of the first gear (34). A first spring (333) is movably installed on the rear side of the transmission rod (332).

3. The steel cable tensioning device for a guardrail repair vehicle according to claim 2, characterized in that: A limiting sleeve (334) is movably sleeved on the middle of the outer side of the rotating rod (331). The outer side of the limiting sleeve (334) is fixedly connected to the inner side of the front wall of the base (1). Several annularly distributed limiting grooves (335) are opened on the outer side of the rotating rod (331) near the front side. The protrusion on the inner side of the limiting sleeve (334) near the front side is slidably connected to the inner side of the limiting groove (335).

4. The steel cable tensioning device for a guardrail repair vehicle according to claim 3, characterized in that: The limiting groove (335) is U-shaped, and a torsion spring is movably installed between the inner side of the limiting sleeve (334) and the outer side of the rotating rod (331).

5. The steel cable tensioning device for a guardrail repair vehicle according to claim 1, characterized in that: The clamping mechanism (4) includes a base (41), the rear side of which is fixedly connected to the front side of the lifting platform (36) near the upper side. Two hydraulic rods (42) are fixedly connected to the front and rear sides of the base (41). A clamping platform (43) is movably sleeved on the inner side of the base (41). A push block (44) is slidably connected to the side of the clamping platform (43) away from the first gear (34). The front and rear ends of the push block (44) are fixedly connected to the lower ends of the hydraulic rods (42).

6. The steel cable tensioning device for a guardrail repair vehicle according to claim 5, characterized in that: The clamping platform (43) is fixedly connected to a locking tooth (45) on the side away from the push block (44).

7. A steel cable tensioning device for a guardrail repair vehicle according to claim 6, characterized in that: Two limiting rods (46) are fixedly connected to the side of the clamping platform (43) away from the locking teeth (45) near the upper and lower sides. The outer side of the limiting rod (46) is movably sleeved on the inner side of the wall of the base (41) away from the locking teeth (45). A second spring (48) is movably sleeved on the outer side of both limiting rods (46), and the second spring (48) is located on the outer side of the base (41). A circular plate (47) is fixedly connected to the end of both limiting rods (46) away from the clamping platform (43).

Images