Hard arm elevator
By using the lifting rod stop and lifting arm slider limiting structure of the rigid boom hoist, the problem of workpiece swaying during the electric hoist's movement is solved, and the workpiece is transported smoothly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI RUIJU INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-12
AI Technical Summary
In the prior art, the workpiece is prone to swinging forward, backward, or left and right during the movement of the electric hoist, which makes it impossible to ensure the smooth handling of the workpiece.
A rigid boom hoist is used, and the lifting rod stops and the lifting arm slider limit structure enable the lifting rod to move linearly in the vertical direction, preventing the workpiece from swaying due to inertia when the track trolley brakes.
It enables smooth handling of workpieces, prevents workpiece swaying during handling, and ensures the stability of materials.
Smart Images
Figure CN224226567U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary lifting tools for lifting machinery, and in particular to rigid boom lifts. Background Technology
[0002] A rigid boom lift is an industrial equipment used for material handling. Its core feature is the use of a rigid boom structure, which enables the precise lifting of heavy objects through the rotation and lifting of the mechanical arm.
[0003] In the electric hoist crane industry, the upper hook of the hoist is connected to the hoist trolley, and the lower hook of the hoist directly lifts the workpiece via a chain. Due to the inertia of the electric hoist during travel, even if the traveling trolley or the hoist trolley brakes, the workpiece still swings forward, backward, or left and right. Therefore, a rigid boom lifting mechanism is designed to rigidly connect the workpiece to the lower flange of the rigid boom hoist, thus counteracting the swing inertia of the workpiece and ensuring the smooth handling of the workpiece. Utility Model Content
[0004] The purpose of this invention is to solve the problem of the inability to guarantee the smooth transport of workpieces in the prior art, and a rigid boom lifting machine is proposed therein.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A rigid boom hoist includes an electric hoist and a trolley platform mounted above the electric hoist. A lifting rod is slidably mounted inside the trolley platform. Two symmetrically arranged stiffening plates are bolted to the bottom of the trolley platform. A lifting fixing arm that limits the movement direction of the lifting rod is bolted between the two stiffening plates. Two symmetrically arranged lifting rod stops are fixedly mounted on the lifting rod, and a first hook is integrally mounted on the lifting rod stop at the lower end of the lifting rod. A chain is mounted on the electric hoist, and a lower hook of the hoist is fixedly mounted at the bottom end of the chain and located inside the first hook.
[0007] Preferably, a bearing mounting seat is fixedly installed at the bottom end of the lifting rod by bolts, the bearing mounting seat has a boring hole, a rotary bearing is fixedly installed in the boring hole by a snap ring, and a rotary shaft is rotatably installed in the rotary bearing.
[0008] Preferably, two symmetrically arranged slide rails are provided on both sides of the lifting rod, and two vertically arranged lifting arm sliders are slidably arranged on the two slide rails. The outer walls of the two lifting arm sliders are fixed with lifting arm fixing plates by bolts.
[0009] Preferably, the lifting arm fixing plate is fixedly installed on the outer wall of the lifting fixed arm by bolts.
[0010] Preferably, two pairs of symmetrically arranged track trolleys are fixedly installed on the upper end of the trolley platform by bolts, and a second hook is fixedly installed on the bottom end of the trolley platform, with a hoist hook sleeved inside the second hook.
[0011] Preferably, the bottom end of the upper hook of the hoist is fixedly connected to the electric hoist of the hoist, and a retaining ring is rotatably installed on both the upper hook and the lower hook of the hoist.
[0012] Compared with the prior art, the present invention has the following advantages:
[0013] This utility model uses a hoist hook fitted onto a first hook to allow the lifting rod to move vertically under the limit of the lifting arm slider, preventing the workpiece from swinging forward, backward, or left and right even when the track trolley brakes suddenly, thus ensuring the smooth transport of the workpiece. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the rigid boom lifting machine proposed in this utility model;
[0015] Figure 2 This is a schematic diagram of the lifting rod and lifting rod stop of the rigid boom lifting machine proposed in this utility model;
[0016] Figure 3 This is a top view of the rigid boom lifting machine proposed in this utility model;
[0017] Figure 4 This is an exploded view of the rigid boom hoist proposed in this utility model.
[0018] In the diagram: 1. Rotary shaft; 2. Rotary bearing; 3. Bearing mounting seat; 4. Lifting rod; 5. Lifting rod stop; 6. Slide rail; 7. Lifting arm slider; 8. First hook; 9. Lifting fixed arm; 10. Lifting arm fixing plate; 11. Rib plate; 12. Trolley platform; 13. Track trolley; 14. Second hook; 15. Upper hook of hoist; 16. Snap ring; 17. Electric hoist; 18. Chain; 19. Lower hook of hoist. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] Reference Figures 1-4The rigid boom hoist includes a hoist electric hoist 17 and a trolley platform 12 mounted above the hoist electric hoist 17. A lifting rod 4 is slidably mounted inside the trolley platform 12. Two symmetrically arranged stiffening plates 11 are fixedly installed at the bottom of the trolley platform 12 by bolts. A lifting fixing arm 9 that limits the movement direction of the lifting rod 4 is fixedly installed between the two stiffening plates 11 by bolts. Two symmetrically arranged lifting rod stops 5 are fixedly installed on the lifting rod 4. A first hook 8 is integrally installed on the lifting rod stop 5 at the lower end of the lifting rod 4. A chain 18 is provided on the hoist electric hoist 17. A hoist lower hook 19 is fixedly installed at the bottom of the chain 18 and is located inside the first hook 8.
[0021] The bottom end of the lifting rod 4 is fixedly installed with a bearing mounting seat 3 by bolts. The bearing mounting seat 3 has a boring hole, and a rotary bearing 2 is fixedly installed in the boring hole by a snap ring. A rotary shaft 1 is rotatably installed in the rotary bearing 2.
[0022] Two symmetrically arranged slide rails 6 are provided on both sides of the lifting rod 4. Two vertically arranged lifting arm sliders 7 are slidably arranged on the two slide rails 6. The outer walls of the two lifting arm sliders 7 are fixed with lifting arm fixing plates 10 by bolts.
[0023] The lifting arm fixing plate 10 is fixedly installed on the outer wall of the lifting fixing arm 9 by bolts, so that the lifting arm fixing plate 10 limits the two lifting arm sliders 7. The two lifting arm sliders 7 slide on the slide rail 6, limiting the movement direction of the lifting rod 4, so that the lifting rod 4 moves in the vertical direction.
[0024] Two pairs of symmetrically arranged track trolleys 13 are fixedly installed on the upper end of the trolley platform 12 by bolts, and a second hook 14 is fixedly installed on the bottom end of the trolley platform 12. The second hook 14 is fitted with a hoist hook 15.
[0025] The bottom end of the upper hook 15 of the hoist is fixedly connected to the electric hoist 17 of the hoist. Both the upper hook 15 and the lower hook 19 of the hoist are rotatably installed with retaining rings 16. The retaining rings 16 can only rotate inwards towards the upper hook 15 and the lower hook 19 of the hoist, preventing the upper hook 15 and the lower hook 19 of the hoist from disengaging from the second hook 14 and the first hook 8, respectively.
[0026] It should be noted that the specific model and specifications to be adopted need to be determined based on the actual specifications of the device. The specific selection and calculation methods use existing technology in this field, so they will not be elaborated here.
[0027] The functional principle of this utility model can be explained through the following operation methods:
[0028] In use, the lower hook 19 of the hoist is placed in the first hook 8 by fixing the first hook 8 on the lifting rod stop 5 at the bottom of the lifting rod 4, so as to prevent the lower hook 19 of the hoist from moving.
[0029] When the workpiece is installed at the bottom of the rotating shaft 1, the electric hoist 17 is turned on, which pulls the chain 18 to move the lower hook 19 of the hoist upward. This causes the lifting rod stop 5 to move the lifting rod 4 upward. The lifting arm fixing plate 10, which is fixedly installed on the outer wall of the lifting fixed arm 9, allows the two lifting arm sliders 7 to slide on the slide rail 6 and limits the movement direction of the lifting rod 4, so that the lifting rod 4 can only move in a straight line in the vertical direction, thus counteracting the inertia of the workpiece when the track trolley 13 is opened and closed.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A rigid boom hoist, comprising a hoist electric hoist (17) and a trolley platform (12) disposed above the hoist electric hoist (17), characterized in that, A lifting rod (4) is slidably installed inside the trolley platform (12). Two symmetrically arranged stiffening plates (11) are fixedly installed at the bottom of the trolley platform (12) by bolts. A lifting fixing arm (9) that limits the movement direction of the lifting rod (4) is fixedly installed between the two stiffening plates (11) by bolts. Two symmetrically arranged lifting rod stops (5) are fixedly installed on the lifting rod (4). A first hook (8) is integrally installed on the lifting rod stop (5) at the lower end of the lifting rod (4). A chain (18) is provided on the electric hoist (17). A hoist lower hook (19) is fixedly installed at the bottom end of the chain (18) and located inside the first hook (8).
2. The rigid boom lift according to claim 1, characterized in that, The bottom end of the lifting rod (4) is fixedly installed with a bearing fixing seat (3) by bolts. The bearing fixing seat (3) has a boring hole. A rotary bearing (2) is fixedly installed in the boring hole by a snap ring. A rotary shaft (1) is rotatably installed in the rotary bearing (2).
3. The rigid boom lift according to claim 2, characterized in that, The lifting rod (4) has two symmetrically arranged slide rails (6) on both sides. Two vertically arranged lifting arm sliders (7) are slidably arranged on the two slide rails (6). The outer walls of the two lifting arm sliders (7) are fixed with lifting arm fixing plates (10) by bolts.
4. The rigid boom lift according to claim 3, characterized in that, The lifting arm fixing plate (10) is fixedly installed on the outer wall of the lifting fixing arm (9) by bolts.
5. The rigid boom lift according to claim 4, characterized in that, The upper end of the trolley platform (12) is fixedly installed with two pairs of symmetrically arranged track trolleys (13) by bolts, and the bottom end of the trolley platform (12) is fixedly installed with a second hook (14), and the second hook (14) is fitted with a hoist hook (15).
6. The rigid boom lift according to claim 5, characterized in that, The bottom end of the upper hook (15) of the hoist is fixedly connected to the electric hoist (17) of the hoist. Both the upper hook (15) and the lower hook (19) of the hoist are rotatably installed with retaining rings (16).