Limiting device on lifting hook of portal crane
By setting a limiting structure with a guide ring and a guide rod on the hook, the problem of cargo instability caused by the swaying of the traction rope is solved, and the stability of the hook is improved.
Patent Information
- Application Number
- CN202520154447.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-22
AI Technical Summary
During the lifting process, the hook of a gantry crane is prone to swaying due to the softness of the traction rope, resulting in poor stability when lifting goods.
A limiting structure consisting of a guide ring and a guide rod is installed on the hook. The threaded connection between the guide ring and the guide rod, along with the sliding of the ball bearings, reduces the swaying of the hook and improves its stability.
The guide ring and guide rod limit the movement of the hook, reducing its back-and-forth sway and improving the stability of the goods during vertical movement.
Smart Images
Figure CN223722610U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hoisting equipment technical field, especially a kind of limiting device on portal crane hook. BACKGROUND
[0002] The body of portal crane is generally set as portal frame type, mobile equipment is set on crossbeam, so that hoisting frame can move laterally on crossbeam, and traction shaft is provided in hoisting frame, under the driving of motor, traction shaft rotates, so that traction rope wound outside traction shaft is unfolded downward, and hook is provided at the end of traction rope, and the up-down movement of hook drives the up-down movement of goods, and then the lateral movement of goods, and goods are transferred to target position, but there are still the following defects:
[0003] Due to the softness of traction rope, it is easy to sway under external force during the hoisting of goods, thereby causing poor hoisting stability of goods. CONTENT OF UTILITY MODEL
[0004] The utility model is to solve at least one of the problems in the prior art, provide a kind of limiting device on portal crane hook, and the problems in the background art can be solved.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of limiting device on portal crane hook, including crane body, the traction rope is provided on the crane body, the lower end of the traction rope is provided with hook, the surface of the hook is fixedly connected with first threaded rod, the two sides of the inner wall of the traction rope are all provided with sliding slot, the inner wall of the two sliding slots is all slidably connected with sliding block, the opposite side of the two sliding blocks is fixedly connected with guide rod, the surface of the guide rod is provided with guide ring, the surface of the guide ring is rotatably connected with threaded sleeve, the surface of the first threaded rod is threadedly connected with the inner wall of the threaded sleeve.
[0006] Preferably, the surface of the sliding block is embedded with second ball, and the surface of the second ball is slidably connected with the inner wall of the sliding slot.
[0007] Preferably, the inner wall of the guide ring is embedded with first ball, and the surface of the first ball is slidably connected with the surface of the guide rod.
[0008] Preferably, the two sides of the guide ring are all provided with ring groove, the inner wall of the ring groove is slidably connected with connecting rod, the end, away from the guide ring, of the connecting rod is fixedly connected with mounting plate in L shape, and the surface of the guide rod is slidably connected with the inside of the mounting plate, penetrating the surface of the mounting plate.
[0009] Preferably, the inside of the mounting plate is rotatably connected with second threaded rod penetrating the surface of the mounting plate, and the surface of the second threaded rod is threadedly connected with the inside of the hoist of the crane body.
[0010] Preferably, the cross section of the sliding groove is convex, and the cross section of the sliding block is also convex.
[0011] Compared with the prior art, the door crane hook upper limiting device has the advantages that:
[0012] (1), the door crane hook upper limiting device, through the setting of the guide ring and the guide rod, under the limiting action of the guide rod and the guide ring in the up and down movement of the hook, reduces the front and rear swing of the hook, thereby improving the stability of the goods in the up and down movement. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be further explained in connection with the drawings and embodiments:
[0014] Figure 1 It is a structure diagram of the door crane hook upper limiting device of the utility model;
[0015] Figure 2 It is the utility model Figure 1 It is an enlarged schematic view of A in the utility model;
[0016] Figure 3 It is a schematic view of the internal structure of the guide ring of the utility model;
[0017] Figure 4 It is a schematic view of the surface structure of the sliding block of the utility model.
[0018] The drawings show that: 1, crane body;2, traction rope;3, sliding groove;4, sliding block;5, guide rod;6, hook;7, first threaded rod;8, second threaded rod;9, mounting plate;10, connecting rod;11, guide ring;12, ring groove;13, threaded sleeve;14, first ball;15, second ball. DETAILED DESCRIPTION
[0019] This part will describe the specific embodiments of the utility model in detail, and the preferred embodiments of the utility model are shown in the drawings, and the drawings are used to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0020] Please refer to Figures 1-4 The utility model provides a technical scheme: a door crane hook upper limiting device, which comprises a crane body 1, a traction rope 2 is arranged on the crane body 1, the lower end of the traction rope 2 is provided with a hook 6, which is used for hooking the weight, and the winding and movement of the traction rope 2 are conventional technical means, so that they will not be discussed in detail here.
[0021] The surface of the hook 6 is fixedly connected with a first threaded rod 7, the inner wall of the traction rope 2 is provided with a sliding groove 3 on both sides, the cross section of the sliding groove 3 is convex, the inner wall of the two sliding grooves 3 is slidably connected with a sliding block 4, the cross section of the sliding block 4 is also convex, the surface of the sliding block 4 is embedded with a second ball 15, the surface of the second ball 15 and the inner wall of the sliding groove 3 slide with each other, so that the friction when the sliding block 4 slides in the sliding groove 3 is reduced, and the smoothness of the device when running is improved.
[0022] The opposite sides of the two sliding blocks 4 are fixedly connected with a guide rod 5, the surface of the guide rod 5 is provided with a guide ring 11, the surface of the guide ring 11 is rotatably connected with a threaded sleeve 13, the surface of the first threaded rod 7 is threadedly connected with the inner wall of the threaded sleeve 13, so that the hook 6 and the guide rod 5 can be connected together through the setting of the threaded sleeve 13 and the first threaded rod 7, thereby avoiding the back and forth swinging of the hook 6 when lifting the weight, thereby improving the stability of the device when in use.
[0023] The inner wall of the guide ring 11 is embedded with a first ball 14, the surface of the first ball 14 and the surface of the guide rod 5 slide with each other, so that the friction between the guide ring 11 and the guide rod 5 is reduced through the setting of the first ball 14, and the smoothness of the device when in use is improved.
[0024] The two sides of the guide ring 11 are provided with a ring groove 12, the inner wall of the ring groove 12 is slidably connected with a connecting rod 10, the end of the connecting rod 10 away from the guide ring 11 is fixedly connected with an L-shaped mounting plate 9, the surface of the guide rod 5 penetrates the surface of the mounting plate 9 and is slidably connected with the inside of the mounting plate 9, the inside of the mounting plate 9 is rotatably connected with a second threaded rod 8 penetrating the surface of the mounting plate 9, the surface of the second threaded rod 8 is threadedly connected with the inside of the hoist of the crane body 1, so that the mounting plate 9 can be connected with the hoist through the setting of the second threaded rod 8, so that the hoist can drive the mounting plate 9 and the guide ring 11 to move synchronously when moving, thereby making the hook 6 move left and right more smoothly.
[0025] Working principle: in use, make the traction rope 2 drop, so that the hook 6 hooks the weight, then the staff can pull the guide ring 11, make the threaded sleeve 13 on the guide ring 11 connect with the first threaded rod 7 on the hook 6, then the staff can rotate the second threaded rod 8, connect the second threaded rod 8 with the winch of the crane body 1, so as to connect the guide ring 11 with the winch, when the hook 6 is lifted, because the hook 6 is limited by the guide ring 11 and the guide rod 5, the hook 6 is not easy to shake, when the hook 6 moves left and right, because the winch moves, so as to drive the hook 6 to move, because the winch is connected with the second threaded rod 8, so as to directly pull the mounting plate 9 and the guide ring 11 to slide on the guide rod 5, so that the movement of the guide ring 11 is no longer passively moved by the traction rope 2, so as to improve the smoothness of the device in use, it is worth promoting.
[0026] The above embodiment of the present application is described in detail in combination with the drawings, but the present application is not limited to the above embodiment, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the present application.
Claims
1. A device for limiting the upward movement of a hook of a portal crane, comprising a crane body (1), characterized in that: The crane body (1) is provided with a traction rope (2), the lower end of the traction rope (2) is provided with a hook (6), the surface of the hook (6) is fixedly connected with a first threaded rod (7), the two sides of the inner wall of the traction rope (2) are both provided with a sliding groove (3), the inner walls of the two sliding grooves (3) are both slidably connected with a sliding block (4), the opposite sides of the two sliding blocks (4) are fixedly connected with a guide rod (5), the surface of the guide rod (5) is provided with a guide ring (11), the surface of the guide ring (11) is rotatably connected with a threaded sleeve (13), and the surface of the first threaded rod (7) is threadedly connected with the inner wall of the threaded sleeve (13).
2. A gate-type crane hook upper limiter according to claim 1, characterized in that: The surface of the sliding block (4) is embedded with a second ball (15), and the surface of the second ball (15) and the inner wall of the sliding groove (3) slide relative to each other.
3. A gate-type crane hook upper limiter according to claim 2, characterized in that: The inner wall of the guide ring (11) is embedded with a first ball (14), and the surface of the first ball (14) and the surface of the guide rod (5) slide relative to each other.
4. A gate-type crane hook upper limiter according to claim 3, characterized in that: The two sides of the guide ring (11) are both provided with a ring groove (12), the inner wall of the ring groove (12) is slidably connected with a connecting rod (10), the end, away from the guide ring (11), of the connecting rod (10) is fixedly connected with an L-shaped mounting plate (9), and the surface of the guide rod (5) penetrates through the surface of the mounting plate (9) and is slidably connected with the inside of the mounting plate (9).
5. A gate-type crane hook upper limiter according to claim 4, characterized in that: The inside of the mounting plate (9) is rotatably connected with a second threaded rod (8) penetrating through the surface of the mounting plate (9), and the surface of the second threaded rod (8) is threadedly connected with the inside of the winch of the crane body (1).
6. A gate-type crane hook upper limiter according to claim 5, characterized in that: The cross section of the sliding groove (3) is convex, and the cross section of the sliding block (4) is also convex.