Special lifting appliance for wheel

Abstract

The utility model discloses a special lifting appliance for a wheel, which comprises a lifting ring, the lower part of the lifting ring is connected with a driving mechanism through a sliding rod, the lower part of the driving mechanism is hinged with a clamping part, and when the driving mechanism moves upwards, the clamping part contracts inwards to clamp the wheel; the clamping part comprises three groups of clamping jaws which are uniformly distributed along the circumferential direction; the driving mechanism comprises a first traction part arranged above the clamping part, three sets of inner connecting rods are evenly arranged on the first traction part in the circumferential direction, the upper ends of the three sets of inner connecting rods are hinged to the first traction part respectively, and the lower ends of the inner connecting rods are hinged to the clamping part respectively. The driving mechanism further comprises a second traction part arranged above the first traction part, the second traction part comprises a driving ring, the axis of the driving ring coincides with the center line of the first traction part, outer connecting rods are arranged at the corresponding positions above the three sets of clamping jaws in the circumferential direction of the driving ring, and the upper ends of the outer connecting rods are hinged to the driving ring. The special lifting appliance for the wheel can realize automatic clamping and loosening under the action of traction force.

Description

Technical Field

[0001] The utility model relates to the field of wheel hoisting, in particular to a special hoisting device for wheels. Background Art

[0002] During the manufacturing process of train or subway wheels, the diverse wheel types, resulting in varying diameters and sizes, and their heavy weight make wheel lifting difficult, necessitating the use of specialized wheel lifting equipment for transport. Existing wheel lifting equipment requires an external drive (such as an electric drive), which limits transport distances and makes it unsuitable for outdoor operations.

[0003] The two ends of the U-shaped integrated hanger are provided with a rotating seat, and a movable clamping foot block is rotatably connected therein, and a spring latch is provided on either side of the two rotating seats. The two spring latches respectively lock the two movable clamping foot blocks that clamp the wheel, thereby stabilizing the clamping force formed by the two movable clamping foot blocks due to the weight of the wheel. A first L-shaped blocking piece and a second L-shaped blocking piece of different heights are respectively welded on the end surfaces of the two sides of the U-shaped integrated hanger, and the first L-shaped blocking piece is located below the second L-shaped blocking piece, and the first L-shaped blocking piece and the second L-shaped blocking piece are both located in the middle of the U-shaped integrated hanger.

[0004] However, in the process of implementing the technical solution of the above-mentioned application embodiment, the applicant found that the above-mentioned technology has at least the following technical problems:

[0005] The sling cannot achieve automatic clamping and releasing, which increases the difficulty of construction, reduces the scope of application of the sling, and is not easy to deal with emergencies such as power outages. Utility Model Content

[0006] The utility model aims to provide a special wheel sling, which can not only realize automatic clamping and loosening under the action of traction, but also can be suitable for wheels of different sizes by simply adjusting the clamping part.

[0007] The utility model adopts the following technical solutions:

[0008] A special wheel hoist, characterized in that it includes a lifting ring, a driving mechanism is connected to the lifting ring below through a sliding rod, the driving mechanism and the lifting ring move up and down synchronously through the sliding rod, a clamping part is hinged under the driving mechanism, and when the driving mechanism moves upward, the clamping part contracts inward to clamp the wheel; the clamping part includes three groups of jaws evenly distributed along the circumferential direction; the driving mechanism includes a first traction part arranged above the clamping part, the first traction part has three groups of inner connecting rods evenly arranged along the circumferential position, the upper ends of the three groups of inner connecting rods are respectively hinged to the first traction part, and the lower ends of the inner connecting rods are respectively hinged to the clamping parts; the driving mechanism also includes a second traction part arranged above the first traction part, the second traction part includes a driving ring, the axis of the driving ring coincides with the center line of the first traction part, and outer connecting rods are respectively arranged at corresponding positions above the three groups of clamping jaws along the circumference of the driving ring, the upper ends of the outer connecting rods are hinged to the driving ring, and the lower ends are hinged to the outer sides of the upper ends of the clamping jaws.

[0009] Furthermore, the drive ring is fixedly provided with three groups of extension rods corresponding to the axial direction, and the lower ends of the extension rods are hinged to the upper ends of the outer connecting rods.

[0010] Furthermore, a threaded hole is provided at the midline position of the first traction part, a sliding rod with a thread provided at the lower end is coaxially arranged with the threaded hole, the sliding rod is threadedly connected to the first traction part through the threaded hole, and a driving ring is passed through the upper end of the sliding rod and is slidably connected to the driving ring.

[0011] Furthermore, the driving mechanism also includes a switching mechanism arranged above the second traction part, the switching mechanism is sleeved on the upper end of the slide rod and is slidably connected to the slide rod, a limit block is fixedly provided on the upper end of the slide rod, the limit block is located above the switching mechanism, and the lower end of the lifting ring is fixed to the upper end surface of the switching mechanism.

[0012] Furthermore, the switching mechanism includes a driving guide groove and a guide portion arranged on the front end surface of the switching mechanism.

[0013] Furthermore, the guide portion includes a guide pin whose inner end is inserted into the driving guide groove and a guide rod rotatably connected to the outer end of the guide pin, and the lower end of the guide rod is rotatably connected to the driving ring through a rotating shaft.

[0014] Furthermore, the driving guide groove includes an ascending guide rail, a transition guide rail and a descending guide rail arranged on the front end face of the switching mechanism, the transition guide rail is V-shaped, and the ascending guide rail, the transition guide rail and the descending guide rail are connected end to end in sequence; and the uppermost end of the outer wall of the ascending guide rail is located on the right side of the uppermost end of the inner wall of the ascending guide rail, the lowermost end of the outer wall of the transition guide rail is located on the left side of the lowermost end of the inner wall of the transition guide rail, and the uppermost end of the outer wall of the descending guide rail is located on the upper right side of the inner wall of the descending guide rail; the lowermost end of the outer wall of the ascending guide rail is located on the left side of the lowermost end of the inner wall of the ascending guide rail.

[0015] Furthermore, a locking nut is provided on the threaded portion of the lower end of the slide rod.

[0016] Furthermore, the clamping claw is L-shaped and the inner sides of the upper ends are hinged to the corresponding lower ends of the inner connecting rods.

[0017] Furthermore, the lower end of the clamping claw extends inward to form a horizontal protrusion.

[0018] The utility model provides a switching mechanism so that the wheel-specific spreader can quickly switch the working state of the clamping part under the change of traction force, thereby reducing equipment costs, improving equipment utilization efficiency, simplifying the structure of the wheel-specific spreader, and increasing the application scenarios of the wheel-specific spreader. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the special lifting device for wheels;

[0020] Figure 2 Schematic diagram of the structure of the slider;

[0021] Figure 3 It is a structural diagram of the driving guide groove;

[0022] Figure 4 Schematic diagram of the structure of the gripper;

[0023] Figure 5 is a structural diagram of the outer connecting rod;

[0024] Figure 6 This is a structural diagram of the transition guide rail.

[0025] In the figure, 1. lifting ring; 2. driving mechanism; 3. clamping part; 4. first traction part; 5. inner connecting rod; 6. horizontal protrusion; 7. second traction part; 8. driving ring; 9. outer connecting rod; 10. threaded hole; 11. sliding rod; 12. switching mechanism; 13. limit block; 14. guide part; 15. driving guide groove; 16. guide pin; 17. guide rod; 18. rotating shaft; 19. rising guide rail; 20. transition guide rail; 21. descending guide rail; 22. clamping claw; 23. locking nut. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0027] like Figures 1 to 6 As shown, the wheel-specific lifting device described in the present invention includes a lifting ring 1, and a driving mechanism 2 is connected to the bottom of the lifting ring 1 through a slide rod 11. The driving mechanism 2 and the lifting ring 1 move up and down synchronously through the slide rod 11. A clamping part 3 is hinged under the driving mechanism 2. When the driving mechanism 2 moves upward, the clamping part 3 contracts inward to clamp the wheel.

[0028] During operation, the driving mechanism 2 drives the clamping portion 3 to retract inwards through the upward traction force acting on the lifting ring 1, thereby achieving the clamping of the wheel by the clamping portion 3.

[0029] In the present invention, the driving mechanism 2 includes a first traction portion 4 provided above the clamping portion 3. The first traction portion 4 is evenly provided with three groups of inner connecting rods 5 along the circumferential position. The upper ends of the three groups of inner connecting rods 5 are respectively hinged to the first traction portion 4, and the lower ends of the inner connecting rods 5 are respectively hinged to the clamping portion 3.

[0030] During operation, the clamping portion 3 is used to clamp and lift the wheel in order to improve the clamping stability. In this embodiment, the clamping portion 3 includes three groups of clamping jaws 22 evenly distributed along the circumference. The clamping jaws 22 are L-shaped and the inner sides of the upper ends are respectively hinged to the lower ends of the corresponding inner connecting rods 5. The lower ends of the clamping jaws 22 extend inward to form a horizontal protrusion 6, which is used to cooperate with the horizontal edge of the wheel to improve the supporting effect.

[0031] The drive mechanism 2 further includes a second traction portion disposed above the first traction portion 4. The second traction portion includes a drive ring 8, the axis of the drive ring 8 coinciding with the centerline of the first traction portion 4. External connecting rods 9 are provided at corresponding positions above the three groups of clamping jaws 22 along the circumference of the drive ring 8. The upper ends of the external connecting rods 9 are hinged to the drive ring 8, and the lower ends are hinged to the outer sides of the upper ends of the clamping jaws 22.

[0032] During operation, when the first traction part 4 is driven to move axially toward the second traction part, the upper ends of the three groups of inner connecting rods 5 hinged to the first traction part 4 move upward at the same time, and the lower ends of the three groups of inner connecting rods 5 shrink inward, thereby driving the clamping claws 22 hinged to the lower ends of the inner connecting rods 5 to shrink inward, and rotate inward with the hinge point between the upper end of the outer connecting rod 9 and the drive ring 8 as the center of the circle until the circular wheel is tightened.

[0033] When the second traction part is driven to move axially upward away from the first traction part 4, the drive ring 8 drives the outer connecting rod 9 to move upward, and the clamping claw 22 hinged to the lower end of the outer connecting rod 9 moves outward, that is, the clamping claw 22 hinged to the lower end of the outer connecting rod 9 rotates outward with the hinge point between the upper end of the inner connecting rod 5 and the first traction part 4 as the center, finally completing the release of the wheel.

[0034] In order to drive the movement of the clamping jaws 22 in a more energy-efficient manner, in this embodiment, three groups of extension rods 7 are fixedly provided axially corresponding to the drive ring 8 , and the lower ends of the extension rods 7 are hinged to the upper ends of the outer connecting rods 9 .

[0035] In order to meet the relative movement of the first traction part 4 and the second traction part along the axial direction, in this embodiment, a threaded hole 10 is further provided at the axial position of the first traction part 4, the sliding rod 11 is coaxially arranged with the threaded hole 10, the lower end of the sliding rod 11 is provided with a thread connected to the threaded hole 10, and the upper end of the sliding rod 11 is penetrated by a driving ring 8 and is slidingly connected to the driving ring 8; the traction force acting on the hanging ring 1 drives the first traction part 4 to move up and down along the sliding rod 11, thereby realizing the relative movement of the first traction part 4 and the second traction part 7 along the axial direction.

[0036] During operation, when the three groups of jaws 22 need to move inward to clamp the wheel, an upward traction force is applied to the lifting ring 1 through the lifting equipment, and the traction force acts on the slide bar 11 that moves synchronously with the lifting ring 1. The upper end of the slide bar 11 moves upward under the action of the traction force, and the first traction part 4 connected to the lower end of the slide bar 11 by a thread moves upward, and the distance between the first traction part 4 and the second traction part becomes smaller. The inner ends of the three groups of inner connecting rods 5 hinged to the first traction part 4 move inward at the same time, driving the inner sides of each group of jaws 22 to move inward until the circular wheel is tightened.

[0037] When the three groups of jaws 22 need to move outward, the distance between the first traction part 4 and the second traction part can be increased by external force (such as a hydraulic rod). At this time, the drive ring 8 drives the outer connecting rod 9 to move upward, and the jaws 22 hinged to the lower end of the outer connecting rod 9 move outward, finally completing the release of the wheel.

[0038] In order to eliminate the need for external force (such as a hydraulic rod) to achieve energy-saving effects, the drive mechanism 2 in this embodiment further includes a switching mechanism 12 disposed above the second traction portion. The switching mechanism 12 is sleeved on the upper end of the slide bar 11 and is slidably connected to the slide bar 11. A limit block 13 is fixedly disposed on the upper end of the slide bar 11, and the limit block 13 is located above the switching mechanism 12. The lower end of the lifting ring 1 is fixed to the upper end surface of the switching mechanism 12.

[0039] During operation, the lifting ring 1 is lifted upward by the lifting equipment, and the upward traction force acts on the switching mechanism 12. The switching mechanism 12 moves upward until it is pressed against the lower end surface of the limit block 13. The sliding rod 11 fixedly connected to the limit block 13 drives the first traction part 4 to move upward through the lower end thread cooperation, and the inner connecting rod 5 moves inward according to the process described above to tighten the wheel.

[0040] After being hoisted into place, in order to enable the switching mechanism 12 to switch the traction force to the second traction part and drive the clamping claw 22 to move outward to release the wheel; in this embodiment, the switching mechanism 12 also includes a driving guide groove 15 and a guide part 14 provided on the front end surface of the switching mechanism 12. The guide part 14 includes a guide pin 16 whose inner end is inserted into the driving guide groove 15 and a guide rod 17 rotatably connected to the outer end of the guide pin 16. The lower end of the guide rod 17 is rotatably connected to the drive ring 8 via a rotating shaft 18.

[0041] In the present utility model, the driving guide groove 15 includes an ascending guide rail 19, a transition guide rail 20 and a descending guide rail 21 arranged on the front end face of the switching mechanism 12. The transition guide rail 20 is V-shaped, and the ascending guide rail 19, the transition guide rail 20 and the descending guide rail 21 are connected in sequence end to end; that is, the uppermost end of the ascending guide rail 19 is connected to the uppermost end on the left side of the transition guide rail 20, the uppermost end on the right side of the transition guide rail 20 is connected to the uppermost end of the descending guide rail 21, and the lowermost end of the ascending guide rail 19 is connected to the lowermost end of the descending guide rail 21; and the uppermost end of the outer wall of the ascending guide rail 19 is located on the right side of the uppermost end of the inner wall of the ascending guide rail 19, the lowermost end of the outer wall of the transition guide rail 20 is located on the left side of the lowermost end of the inner wall of the transition guide rail 20, and the uppermost end of the outer wall of the descending guide rail 21 is located on the upper right side of the inner wall of the descending guide rail 21; the lowermost end of the outer wall of the ascending guide rail 19 is located on the left side of the lowermost end of the inner wall of the ascending guide rail 19.

[0042] When the present invention is used for wheel hoisting, the clamping jaws 22 are in a naturally drooping state in the initial state, the guide pin 16 is located at the lowermost end of the ascending guide rail 19 in the driving guide groove 15, and the traction force acts on the slide bar 11 synchronously with the lifting ring 1. The upper end of the slide bar 11 moves upward under the action of the traction force, and the first traction part 4 connected to the lower end of the slide bar 11 by a thread moves upward. The distance between the first traction part 4 and the second traction part becomes smaller, and the inner ends of the three groups of inner connecting rods 5 hinged to the first traction part 4 move inward at the same time, driving the inner sides of each group of clamping jaws 22 to move inward until the circular wheel is tightened;

[0043] After the hoisting is completed and transported to the designated location, the wheel is placed on the designated support, and the clamping claw 22 is located outside the support. As the clamping claw 22 continues to move downward, the switching mechanism 12 continues to move downward under the action of gravity, and the guide pin 16 reaches the uppermost end of the ascending guide rail 19 along the ascending guide rail 19; then the lifting ring 1 is pulled upward again, so that the switching mechanism 12 moves upward and the guide pin 16 reaches the lowest end of the transition guide rail 20. As the lifting ring 1 drives the switching mechanism 12 to continue to move upward, the guide pin 16 drives the guide rod 17 moves upward, and the driving ring 8 connected to the guide rod 17 drives the outer connecting rod 9 to move upward. Before the switching mechanism 12 abuts against the lower end surface of the limit block 13, the position of the first traction part 4 remains unchanged, and the distance between the first traction part 4 and the driving ring 8 becomes larger. At this time, the clamping claw 22 hinged to the lower end of the outer connecting rod 9 moves outward, and the clamping claw 22 hinged to the lower end of the outer connecting rod 9 rotates outward with the hinge point between the upper end of the inner connecting rod 5 and the first traction part 4 as the center of the circle. As the inner connecting rod 5 moves outward, the three groups of clamping claws 22 move outward synchronously, and finally the wheel is released.

[0044] When the switching mechanism 12 contacts the lower end surface of the limit block 13, the three groups of jaws 22 completely release the wheel and are located on the outside of the wheel; at this time, the guide pin 16 is located at the lowest end of the transition guide rail 20; during the second lifting, as the lower end of the jaws 22 touches the ground or the inner wall of the jaws 22 contacts the wheel, the guide pin 16 moves upward and is located at the uppermost end on the right side of the transition guide rail 20 under the guidance of the transition guide rail 20; when the upward traction force acts on the slide bar 11 synchronously with the lifting ring 1, the guide pin 16 moves to the lowest end of the descending guide rail 21 under the guidance of the transition guide rail 20, and moves the inner side of each group of jaws 22 inward until the circular wheel is tightened; forming a cycle.

[0045] In this embodiment, by adjusting the thread at the lower end of the slide rod 11, the first traction part 4 is located at different positions at the lower end of the slide rod 11. When the first traction part 4 moves up and down in the threaded section, the three groups of jaws 22 open to different sizes, thereby adapting to different wheel diameters.

[0046] In this embodiment, a locking nut 23 is provided at the threaded portion of the lower end of the slide rod 11 . During operation, the upper end surface of the locking nut 23 presses against the lower end surface of the first traction portion 4 to prevent the opening and closing angle of the clamping jaw 22 from changing due to the rotation of the slide rod 11 .

Claims

1. A special wheel lifting device, characterized by: It includes a lifting ring, a driving mechanism is connected to the lifting ring below through a sliding rod, the driving mechanism and the lifting ring move up and down synchronously through the sliding rod, and a clamping part is hinged at the bottom of the driving mechanism. When the driving mechanism moves up, the clamping part contracts inward to clamp the wheel; the clamping part includes three groups of clamping jaws evenly distributed along the circumference; the driving mechanism includes a first traction part arranged above the clamping part, and the first traction part has three groups of inner connecting rods evenly arranged along the circumferential position, the upper ends of the three groups of inner connecting rods are respectively hinged to the first traction part, and the lower ends of the inner connecting rods are respectively hinged to the clamping parts; the driving mechanism also includes a second traction part arranged above the first traction part, the second traction part includes a driving ring, the axis of the driving ring coincides with the center line of the first traction part, and outer connecting rods are respectively arranged at corresponding positions above the three groups of clamping jaws along the circumference of the driving ring, the upper ends of the outer connecting rods are hinged to the driving ring, and the lower ends are hinged to the outer sides of the upper ends of the clamping jaws.

2. The wheel-specific lifting device according to claim 1, characterized in that: The driving ring is axially and fixedly provided with three groups of extension rods, and the lower ends of the extension rods are hinged to the upper ends of the outer connecting rods.

3. The wheel-specific lifting device according to claim 1, characterized in that: A threaded hole is provided at the midline position of the first traction part, a sliding rod with a thread provided at the lower end is coaxially arranged with the threaded hole, the sliding rod is threadedly connected to the first traction part through the threaded hole, and a driving ring is passed through the upper end of the sliding rod and is slidably connected to the driving ring.

4. The wheel-specific lifting device according to claim 1, characterized in that: The driving mechanism also includes a switching mechanism arranged above the second traction part. The switching mechanism is sleeved on the upper end of the slide rod and is slidably connected to the slide rod. A limit block is fixed on the upper end of the slide rod. The limit block is located above the switching mechanism, and the lower end of the lifting ring is fixed to the upper end surface of the switching mechanism.

5. The wheel-specific lifting device according to claim 4, characterized in that: The switching mechanism comprises a driving guide groove and a guide portion arranged on the front end surface of the switching mechanism.

6. The wheel-specific lifting device according to claim 5, characterized in that: The guide portion comprises a guide pin with an inner end inserted in the driving guide groove and a guide rod rotatably connected to the outer end of the guide pin, and the lower end of the guide rod is rotatably connected to the driving ring through a rotating shaft.

7. The wheel-specific lifting device according to claim 6, characterized in that: The driving guide groove includes an ascending guide rail, a transition guide rail and a descending guide rail arranged on the front end face of the switching mechanism. The transition guide rail is V-shaped, and the ascending guide rail, the transition guide rail and the descending guide rail are connected end to end in sequence; and the uppermost end of the outer wall of the ascending guide rail is located on the right side of the uppermost end of the inner wall of the ascending guide rail, the lowermost end of the outer wall of the transition guide rail is located on the left side of the lowermost end of the inner wall of the transition guide rail, and the uppermost end of the outer wall of the descending guide rail is located on the upper right side of the inner wall of the descending guide rail; the lowermost end of the outer wall of the ascending guide rail is located on the left side of the lowermost end of the inner wall of the ascending guide rail.

8. The wheel-specific lifting device according to claim 1, characterized in that: A locking nut is provided on the threaded portion of the lower end of the slide rod.

9. The wheel-specific lifting device according to claim 1, characterized in that: The clamping claws are L-shaped and the inner sides of the upper ends are hinged to the corresponding lower ends of the inner connecting rods.

10. The wheel-specific lifting device according to claim 1, characterized in that: The lower end of the clamping claw extends inward to form a horizontal protrusion.

Images