Self-force-increasing rail clamping device
By designing a self-enhancing rail clamp, the clamping force of the rail is enhanced by using structures such as eccentric gears and friction blocks, the problems of insufficient stop-slip force of the hydraulic rail clamp and small clamp retreat are solved, and higher wind resistance and safety are achieved.
Patent Information
- Application Number
- CN202423017593.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-12-09
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of stopping of track running equipment, in particular to a self-enhancing rail clamp. Background Art
[0002] The rail clamp is a crane safety device that prevents outdoor cranes from sliding along the track under the action of strong winds. Usually, a hydraulic rail clamp connected to the bottom structure of the crane is used to clamp the two sides of the track head to prevent sliding. In the prior art, the clamp of the hydraulic rail clamp has a small back-off distance, and the distance between the clamp and the track is still relatively close when the clamp is opened. In the operating environment of the crane, the track conditions and the crane vehicle condition are relatively strict, requiring the tracks to be straight and not to have misalignment, and the crane not to walk diagonally, etc. When the crane is in a walking state, the clamp of the rail clamp is opened on both sides of the track. If there are problems such as the track is not straight, misaligned, or the track drop is large, the clamp will hang on the track, causing damage to the clamp or derailment of the crane; the clamp of the traditional hydraulic rail clamp is opened by hydraulic pressure and braked by a power-off spring. Because the clamping force of the spring and the brake arm lever is the rated value, the anti-slip force generated on the rail is also the rated value. When the strong wind thrust is greater than the anti-slip force of the rail clamp, the crane or other walking equipment is at risk of being blown away by the strong wind. Utility Model Content
[0003] The utility model aims to provide a self-enhancing rail clamp to solve the problem that the existing rail clamp has insufficient anti-slip force and easily causes the crane to be blown away by strong wind.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A self-enhancing rail clamp comprises a flat plate, wherein a through slot is passed through the center of the flat plate from top to bottom, a support is arranged in the through slot, the support can move left and right in the through slot, two clamping units are arranged in the front-to-back direction in the support, the lower end of the clamping unit is placed below the flat plate, and the two clamping units rotate toward the middle to clamp the track; a vertical plate is fixed to both the left and right ends of the upper end surface of the flat plate, a horizontally placed adjusting unit is arranged above between the two vertical plates, the adjusting unit is placed above the middle of the two clamping units, a lifting unit is arranged below the left and right ends of the adjusting unit, and the two lifting units drive the adjusting unit to slide up and down along the vertical plates; when the lifting unit drives the adjusting unit to slide downward, the lower ends of the two clamping units move closer to the center of the flat plate to clamp the track, and when the flat plate moves left and right relative to the support, the adjusting unit drives the lower end of the clamping unit to further move closer to the center of the flat plate.
[0006] As a further description of the above technical solution:
[0007] The clamping unit includes a rectangular frame placed front and back, a main shaft is inserted up and down at the center of the upper end face of the rectangular frame, an eccentric gear is rotatably provided on the main shaft, the eccentric gear is placed in the rectangular frame, the front and rear sides of the eccentric gear are placed outside the rectangular frame, a rectangular block is fixed on each of the left and right sides of the lower end face of the rectangular frame, a rotating rod is fixed between the two rectangular blocks, the rotating rod is placed horizontally, and the two ends of the rotating rod are respectively placed in the supports on the corresponding sides, the lower end of each rectangular block passes through the through slot and is placed below the flat plate, and a friction block is fixed to the lower end of the rear side of the two rectangular blocks.
[0008] As a further description of the above technical solution:
[0009] The adjustment unit includes a slide plate, which is placed vertically. The slide plate is located between two rectangular frames, and the left and right ends of the slide plate are respectively placed on the vertical plates on the corresponding sides. A fixed block is fixed in the middle of the slide plate, and the front and rear end surfaces of the fixed block are both inclined surfaces inclined downward, and a rack is fixed on each inclined surface.
[0010] As a further description of the above technical solution:
[0011] The lifting unit comprises a vertically placed electric cylinder, the lower end of which is fixed on a flat plate, the top rod of the electric cylinder is fixed to the lower end of a slide plate, a slide groove is opened on the top of each vertical plate, and the two ends of the slide plate are respectively placed in the slide grooves on the corresponding sides to slide up and down.
[0012] As a further description of the above technical solution:
[0013] The cross-section of the support is an H-shaped structure, and a vertically placed long hole is opened on the front and rear sides of the left end face of the support respectively. The long hole passes through the left and right end faces of the support, and the two ends of the rotating rod are placed in the corresponding long holes. Each rectangular block is placed in the support for rotation; a fixed pulley is provided on the upper end face of the fixed block, and a lifting ear is provided on the upper end face of each rectangular frame. A pull rope is fixed on the two lifting ears, and the middle part of the pull rope is placed on the upper part of the fixed pulley. A spring is provided between the right side wall of the support and the inner side wall of the through groove.
[0014] As a further description of the above technical solution:
[0015] A bracket plate is fixed at both ends of the support, and the vertical section of the bracket plate is an inverted U shape. A roller is rotatably arranged in each bracket plate, and the two rollers drive the support to slide left and right. A universal bull's eye wheel is fixed on the front and rear end surfaces of each support, and the universal ball of the universal bull's eye wheel is vertically facing the upper end surface of the flat plate.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0017] (1) The utility model moves the rack downward so that the friction block initially clamps the track. When the outdoor crane is stopped, it is pushed, which drives the rack to move horizontally and causes the eccentric gear to rotate, causing the friction block to further increase the clamping force on the track. This solves the problem that when the outdoor crane is stopped and a strong wind pushes the outdoor crane, the clamping force of the hydraulic rail clamp on the track is insufficient, and there is a risk of the crane being blown away by the strong wind. When the outdoor crane is stopped and is pushed by an external force, the friction block will further increase the clamping force on the track with the external force, thereby reducing the risk of the outdoor crane being pushed by an external force or blown by a strong wind.
[0018] (2) The utility model drives the pulley to move up and down through the fixed block. When the pulley moves upward, the rectangular frame is driven by the pull rope to rotate toward the center of the fixed block first, and then moves upward along the long hole through the rotating rod, so that the lower end of the friction block at the bottom of the rectangular block is placed on the upper part of the upper end surface of the track, thereby solving the problem that the clamp back distance of the hydraulic rail clamp is small and the distance to the track is still very close when the clamp is opened. The effect of preventing the friction block from contacting the track when the outdoor crane encounters misalignment and tilting during travel is achieved, thereby reducing the risk of damage to the friction block caused by hanging on the track and improving safety during construction operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model on the track;
[0020] Figure 2 This is the front view of the utility model on the track;
[0021] Figure 3 It is a three-dimensional diagram of an eccentric gear 7, a rectangular block 8, a rotating rod 9 and a friction block 10 installed on a rectangular frame 5;
[0022] Figure 4 A three-dimensional diagram of a fixed block 12 and a rack 13 installed on a slide plate 11;
[0023] Figure 5 It is a three-dimensional view showing that the support plate 22 is fixed on the support 3. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1-5 The utility model provides a technical solution of a self-enhancing rail clamp:
[0026] A self-enhancing track clamp comprises a flat plate 1, wherein a through slot 2 is passed through the center of the flat plate 1 from top to bottom, a support 3 is arranged in the through slot 2, the support 3 can move left and right in the through slot 2, two clamping units are arranged in the front-to-back direction in the support 3, the lower end of the clamping unit is placed below the flat plate 1, and the two clamping units rotate toward the middle to clamp the track; a vertical plate 4 is fixed to both the left and right ends of the upper end surface of the flat plate 1, a horizontally placed adjusting unit is arranged above between the two vertical plates 4, the adjusting unit is placed above the middle of the two clamping units, a lifting unit is arranged below the left and right ends of the adjusting unit, and the two lifting units drive the adjusting unit to slide up and down along the vertical plate 4; when the lifting unit drives the adjusting unit to slide downward, the lower ends of the two clamping units move closer to the center of the flat plate 1 to clamp the track, and when the flat plate 1 moves left and right relative to the support 3, the adjusting unit drives the lower end of the clamping unit to further move closer to the center of the flat plate 1.
[0027] The clamping unit includes a rectangular frame 5 placed front and back, a main shaft 6 is inserted up and down at the center of the upper end face of the rectangular frame 5, an eccentric gear 7 is rotatably provided on the main shaft 6, the eccentric gear 7 is placed in the rectangular frame 5, the front and rear sides of the eccentric gear 7 are placed outside the rectangular frame 5, a rectangular block 8 is fixed on each of the left and right sides of the lower end face of the rectangular frame 5, a rotating rod 9 is fixed between the two rectangular blocks 8, the rotating rod 9 is placed horizontally, and the two ends of the rotating rod 9 are respectively placed in the support 3 on the corresponding side, the lower end of each rectangular block 8 passes through the through slot 2 and is placed below the flat plate 1, and a friction block 10 is fixed to the lower end of the rear side of the two rectangular blocks 8.
[0028] The adjustment unit includes a slide plate 11, which is placed vertically. The slide plate 11 is located between the two rectangular frames 5, and the left and right ends of the slide plate 11 are respectively placed on the vertical plates 4 on the corresponding sides. A fixed block 12 is fixed in the middle of the slide plate 11, and the front and rear end surfaces of the fixed block 12 are both inclined surfaces inclined downward, and a rack 13 is fixed on each inclined surface.
[0029] The lifting unit includes a vertically placed electric cylinder 14, the lower end of which is fixed on the flat plate 1, and the top rod of the electric cylinder 14 is fixed to the lower end of the slide plate 11. A slide groove 15 is opened on the top of each vertical plate 4, and the two ends of the slide plate 11 are respectively placed in the slide grooves 15 on the corresponding sides to slide up and down.
[0030] The cross section of the support 3 is an H-shaped structure, and a vertically placed long hole 18 is opened on the front and rear sides of the left end face of the support 3. The long hole 18 passes through the left and right end faces of the support 3, and the two ends of the rotating rod 9 are placed in the corresponding long holes 18. Each rectangular block 8 is placed in the support 3 for rotation; a fixed pulley 19 is provided on the upper end face of the fixed block 12, and a lifting ear 20 is provided on the upper end face of each rectangular frame 5. A pull rope 21 is fixed on the two lifting ears 20, and the middle part of the pull rope 21 is placed on the upper part of the fixed pulley 19. A spring is provided between the right side wall of the support 3 and the inner side wall of the through groove 2.
[0031] A bracket plate 22 is fixed at both ends of the support 3, and the vertical section of the bracket plate 22 is an inverted U shape. A roller 23 is rotatably provided in each bracket plate 22, and the two rollers 23 drive the support 3 to slide left and right. A universal bull's eye wheel 17 is fixed on the front and rear end surfaces of each support 3, and the universal ball of the universal bull's eye wheel 17 is vertically facing the upper end surface of the plate 1.
[0032] Working principle:
[0033] The eccentric gear 7, rack 13, fixed pulley 19, electric cylinder 14, distribution box 16, universal bull's eye wheel 17 and outdoor crane used in the utility model are all prior art.
[0034] Before use, the utility model fixes the vertical plate 4 on the left side of the flat plate 1 to the bottom of the outdoor crane, so that the lower end of the roller 23 is placed on the track, and the initial position of each eccentric gear 7 is located in the middle of the corresponding rack 13. A distribution box 16 is fixed to the right end of the left vertical plate 4, and the distribution box 16 provides power for the electric cylinder 14. The electric cylinder 14 is controlled by a person to drive the slide plate 11 to move upward. Because the front and rear end surfaces of the fixed block 12 are inclined surfaces inclined downward, the rack 13 is inclined. The rack 13 moves upward to make the meshed eccentric gear 7 slide along the rack 13, so that the fixed pulley 19 on the upper end surface of the fixed block 12 moves upward, and the rectangular frame 5 is rotated toward the center of the fixed block 12 by the pull rope 21, causing the lower end of each rectangular block 8 to rotate away from the front and rear sides of the track. When the slide plate 11 continues to move upward, each rotating rod 9 moves upward along the long hole 18, so that the friction block 10 fixed at the lower end of the rectangular block 8 leaves the upper end surface of the track, preventing the friction block 10 from hanging on the track during the walking process of the outdoor crane.
[0035] When in use, the outdoor crane drives the roller 23 to rotate along the track. When the outdoor crane needs to be stopped and fixed, the electric cylinder 14 is controlled by a person to move the slide plate 11 downward. When the electric cylinder 14 moves downward, each rotating rod 9 first moves downward along the long hole 18. When the rotating rod 9 moves to the lower end of the long hole 18, the friction block 10 at the lower end of the rectangular block 8 is placed on both sides of the track. When the electric cylinder 14 continues to move the slide plate 11 downward, the rack 13 on the inclined surface squeezes the meshing eccentric gear 7, so that the two rectangular frames 5 rotate toward the front and rear sides of the flat plate 1 respectively. When the rectangular frame 5 rotates, the friction block 10 at the lower end of the rectangular block 8 squeezes both sides of the track, and the support 3 is initially fixed on the track.
[0036] When the outdoor crane is subjected to thrust in a stopped state, the crane pushes the vertical plate 4 to move horizontally. When the vertical plate 4 moves horizontally, the vertical plate 4 pushes the rack 13 on the slide plate 11 to move horizontally. Since the rack 13 is meshed with the eccentric gear 7, the rack 13 causes the eccentric gear 7 to rotate. When the eccentric gear 7 rotates, it drives the two rectangular frames 5 to continue to rotate toward the front and rear sides of the flat plate 1 respectively, so that the friction block 10 at the lower end of the rectangular block 8 continues to increase the extrusion force on both sides of the extrusion track to prevent the crane from continuing to move when it is subjected to thrust in a stopped state; repeat the above operation when the outdoor crane needs to continue moving.
[0037] It is worth noting that after the friction block 10 leaves the track, the spring fixed between the support 3 and the right side wall of the through slot 2 enables the support 3 to be in the middle position of the through slot 2 during the movement of the crane, ensuring that the friction block 10 is in a good condition when increasing the clamping force on the track.
[0038] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Technical personnel familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical scheme and inventive concept of the present invention, which should be included in the protection scope of the present invention.
Claims
1. A self-energizing rail clamp, characterized in that: The invention comprises a flat plate (1), wherein a through slot (2) passes through the center of the flat plate (1) from top to bottom, a support (3) is provided in the through slot (2), the support (3) can move left and right in the through slot (2), two clamping units are provided in the front-back direction in the support (3), the lower ends of the clamping units are placed below the flat plate (1), and the two clamping units rotate toward the middle to clamp the track; a vertical plate (4) is fixed to the left and right ends of the upper end surface of the flat plate (1), a horizontally placed adjustment unit is provided above between the two vertical plates (4), the adjustment unit is placed above the middle of the two clamping units, a lifting unit is provided below the left and right ends of the adjustment unit, and the two lifting units drive the adjustment unit to slide up and down along the vertical plate (4); when the lifting unit drives the adjustment unit to slide downward, the lower ends of the two clamping units move toward the center of the flat plate (1) to clamp the track, and when the flat plate (1) moves left and right relative to the support (3), the adjustment unit drives the lower ends of the clamping units to move further toward the center of the flat plate (1).
2. A self-enhancing rail clamp according to claim 1, characterized in that: The clamping unit comprises a rectangular frame (5) placed front and back, a main shaft (6) is inserted at the top and bottom of the center of the upper end surface of the rectangular frame (5), an eccentric gear (7) is rotatably provided on the main shaft (6), the eccentric gear (7) is placed in the rectangular frame (5), the front and rear sides of the eccentric gear (7) are placed outside the rectangular frame (5), a rectangular block (8) is fixed at the left and right ends of the lower end surface of the rectangular frame (5), a rotating rod (9) is fixed between the two rectangular blocks (8), the rotating rod (9) is placed horizontally, and the two ends of the rotating rod (9) are respectively placed in the support (3) on the corresponding side, the lower end of each rectangular block (8) passes through the through slot (2) and is placed below the flat plate (1), and a friction block (10) is fixed at the lower end of the rear side of the two rectangular blocks (8).
3. A self-enhancing rail clamp according to claim 2, characterized in that: The adjustment unit comprises a slide plate (11), which is placed vertically. The slide plate (11) is located between the two rectangular frames (5), and the left and right ends of the slide plate (11) are respectively placed on the vertical plates (4) on the corresponding sides. A fixed block (12) is fixed in the middle of the slide plate (11), and the front and rear end surfaces of the fixed block (12) are both inclined surfaces inclined downward, and a rack (13) is fixed on each inclined surface.
4. A self-enhancing rail clamp according to claim 3, characterized in that: The lifting unit comprises a vertically placed electric cylinder (14), the lower end of the electric cylinder (14) is fixed on the flat plate (1), the top rod of the electric cylinder (14) is fixed to the lower end of the slide plate (11), a slide groove (15) is opened on the top of each vertical plate (4), and the two ends of the slide plate (11) are respectively placed in the slide grooves (15) on the corresponding sides to slide up and down.
5. A self-enhancing rail clamp according to claim 4, characterized in that: The support (3) has an H-shaped cross section. A vertically placed long hole (18) is opened on the front and rear sides of the left end surface of the support (3). The long hole (18) passes through the left and right end surfaces of the support (3). The two ends of the rotating rod (9) are placed in the corresponding long holes (18). Each rectangular block (8) is placed in the support (3) for rotation. A fixed pulley (19) is provided on the upper end surface of the fixed block (12). A lifting ear (20) is provided on the upper end surface of each rectangular frame (5). A pull rope (21) is fixed on the two lifting ears (20). The middle part of the pull rope (21) is placed on the upper part of the fixed pulley (19). A spring is provided between the right side wall of the support (3) and the inner side wall of the through groove (2).
6. The self-enhancing rail clamp according to claim 1, characterized in that: A support plate (22) is fixed at both ends of the support (3), and the vertical section of the support plate (22) is an inverted U shape. A roller (23) is rotatably arranged inside each support plate (22), and the two rollers (23) drive the support (3) to slide left and right. A universal bull's eye wheel (17) is fixed on the front and rear end surfaces of each support (3), and the universal ball of the universal bull's eye wheel (17) is vertically facing the upper end surface of the plate (1).