Reverse self-locking jacking mechanism

Abstract

The utility model discloses a reverse self-locking jacking mechanism which comprises a reverse self-locking jacking mechanism body, a bottom base plate is arranged on the reverse self-locking jacking mechanism body, a jacking air cylinder is arranged on an air cylinder swing fixing seat, close to one end, below the bottom base plate, and a fixed connecting arm is arranged in the center, close to one end, below the bottom base plate. A limiting connecting swing arm and a jacking swing arm are arranged on the fixed connecting arm in a matched mode, a matched connector is arranged at the joint of the limiting connecting swing arm and the jacking swing arm and the end of a push shaft of the jacking air cylinder in a matched mode, guide rods are arranged in linear bearings on the two sides of a swing arm moving groove in the bottom base plate, and a jacking platform is arranged at the ends above the guide rods. The reverse self-locking jacking mechanism is a jacking device used on a conveying line, the lower air cylinder is used for pulling the connecting rod to enable the jacking platform to ascend and descend, the swing arm is connected with the self-locking mechanism in a limiting mode, and it is guaranteed that the jacking platform cannot move downwards when force is applied downwards.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and particularly relates to a reverse self-locking jacking mechanism. Background Art

[0002] The jacking mechanism is a mechanism for adding or reducing standard sections in a self-elevating tower crane.

[0003] The jacking mechanism is a mechanical device used to lift or support heavy objects. It can adopt different technologies according to different application scenarios and requirements, including mechanical, screw, hydraulic, pneumatic, lever and self-weight types, etc.

[0004] Mechanical jacking mechanism: It is realized through mechanical transmission and mainly consists of a hydraulic pump, hydraulic pipeline, jack, etc. It uses the pressure generated by the hydraulic pump to lift the jack and is applicable to various occasions.

[0005] Screw jacking mechanism: It is realized by using screw drives such as worm gears or screws, and is applicable to construction machinery, vehicles and ships, etc. It drives the jack to rise through the rotation of the screw.

[0006] Hydraulic jacking mechanism: It is realized by the pressure generated by hydraulic oil and mainly consists of a hydraulic cylinder, hydraulic pipeline and support frame, etc. It is applicable to occasions where precise control of the jacking height is required.

[0007] Pneumatic jacking mechanism: It is realized by gas pressure and mainly consists of an air pump, airbag and support frame, etc. It is applicable to occasions where quick and precise control of the jacking height is required.

[0008] Lever jacking mechanism: It is realized by using the lever principle and is applicable to the support and lifting of objects at different heights.

[0009] Self-weight jacking structure: It is realized by using the gravity of an object and usually consists of a support frame and a heavy object, and is applicable to occasions where simple support is required.

[0010] Currently, the jacking mechanism is also widely used. Moreover, when using the jacking mechanism for work, it is often necessary to keep the jacked tabletop at a stable height and not move. In this case, the jacking mechanism needs to be locked and not move after jacking to a certain position. Currently, many locking methods use manual assistance for locking. Such a jacking mechanism is not convenient to use and cannot achieve self-locking after jacking. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Content of the Utility Model

[0011] The purpose of the present utility model is to provide a reverse self-locking lifting mechanism. A bottom substrate is provided on the body of the reverse self-locking lifting mechanism. A lifting cylinder is provided on a cylinder swing fixing seat near one end of the lower surface of the bottom substrate. A fixed connection arm is provided in the center near one end of the lower surface of the bottom substrate. A limit connection swing arm and a lifting swing arm are cooperatively arranged on the fixed connection arm. A mating connection head is cooperatively arranged at the junction of the limit connection swing arm and the lifting swing arm and the end of the push shaft of the lifting cylinder. Guide rods are arranged inside linear bearings on both sides of the swing arm moving groove inside the bottom substrate. A lifting platform is provided at the upper end of the guide rod. This reverse self-locking lifting mechanism is a lifting device used on a conveyor line. It uses a lower cylinder to pull a connecting rod to lift and lower the lifting platform. The limit connection swing arm has a self-locking mechanism to ensure that the lifting platform will not move down when a downward force is applied, so as to solve the problems raised in the above background technology.

[0012] To achieve the above object, the present utility model provides the following technical solution: A reverse self-locking lifting mechanism, including a reverse self-locking lifting mechanism body. A bottom substrate is provided on the reverse self-locking lifting mechanism body. Cylinder swing fixing seats are symmetrically arranged at the central position near one end of the lower surface of the bottom substrate. The cylinder swing fixing seats are fixedly connected to the lower surface of the bottom substrate by screws. A lifting cylinder is cooperatively arranged between the two cylinder swing fixing seats. Both sides of the lifting cylinder are movably connected to the cylinder swing fixing seats by connecting shafts. A fixed connection arm is provided at the center of the other end of the lower surface of the bottom substrate. The fixed connection arm is fixedly installed on the lower surface of the bottom substrate.

[0013] A limit connection swing arm is provided at one end of the fixed connection arm. A lifting swing arm is provided at one end of the limit connection swing arm. The fixed connection arm, the limit connection swing arm, and the lifting swing arm are movably connected by connecting shafts.

[0014] Linear bearings are vertically cooperatively arranged inside the bottom substrate. The linear bearings are vertically arranged inside the bottom substrate. A fixed connecting piece is provided between the linear bearings and the bottom substrate. The fixed connecting piece is fixed on the upper surface of the bottom substrate. Guide rods are arranged inside the linear bearings. A lifting platform is provided at the top end of the guide rods. The top end of the guide rods is fixedly connected to the lower surface of the lifting platform.

[0015] Preferably, a mating connection head is provided at the end of the push shaft of the lifting cylinder. One end of the mating connection head is fixedly connected to the push shaft of the lifting cylinder. The other end of the mating connection head is movably connected to the junction of the limit connection swing arm and the lifting swing arm by a connecting shaft.

[0016] Preferably, a swing arm moving groove is cooperatively arranged inside the bottom substrate. Linear bearing fitting installation grooves are cooperatively arranged on both sides of the swing arm moving groove. The swing arm moving groove and the linear bearing fitting installation grooves both penetrate the bottom substrate.

[0017] Preferably, a connecting head is provided at the center of the bottom of the lifting platform. The connecting head and the lifting platform are of an integral structure. On the upper surface of the lifting platform, fitting mounting edges are symmetrically provided near both side edges, and lifting contact heads are provided inside the fitting mounting edges.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] This reverse self-locking lifting mechanism is a lifting device used on a conveyor line. A lower cylinder is used to pull a connecting rod to lift and lower the lifting platform. A limit connecting swing arm with a self-locking mechanism ensures that the lifting platform will not move downward when applying a downward force, guaranteeing the safety of the equipment. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the reverse self-locking lifting mechanism of the present utility model;

[0021] Figure 2 It is a side view of the reverse self-locking lifting mechanism of the present utility model;

[0022] Figure 3 It is a left view of the reverse self-locking lifting mechanism of the present utility model;

[0023] Figure 4 It is a top view of the reverse self-locking lifting mechanism of the present utility model.

[0024] In the figure: 1. Reverse self-locking lifting mechanism body; 2. Bottom substrate; 3. Cylinder swing fixing seat; 4. Lifting cylinder; 5. Linear bearing; 6. Guide rod; 7. Limit connecting swing arm; 8. Fixed connecting arm; 9. Fitting connecting head; 10. Swing arm moving groove; 11. Lifting platform; 12. Lifting swing arm; 13. Connecting head; 14. Fitting mounting edge. Detailed Embodiment

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-4 , the present utility model provides a technical solution: a reverse self-locking lifting mechanism, including a reverse self-locking lifting mechanism body 1. A bottom substrate 2 is provided on the reverse self-locking lifting mechanism body 1. Inside the bottom substrate 2, a swing arm moving groove 10 is provided in a matching manner. On both sides of the swing arm moving groove 10, linear bearing fitting installation grooves are provided in a matching manner. Both the swing arm moving groove 10 and the linear bearing fitting installation grooves penetrate through the bottom substrate 2.

[0027] On the lower surface of the bottom substrate 2, symmetrically arranged at the central position near one end of the end are cylinder swing fixing seats 3. The cylinder swing fixing seats 3 are fixedly connected to the lower surface of the bottom substrate 2 by screws. The cylinder swing fixing seats 3 are designed in a right angle, which can improve the stability between the cylinder swing fixing seats 3 and the bottom substrate 2. Between the two cylinder swing fixing seats 3, a lifting cylinder 4 is cooperatively arranged. The two sides of the lifting cylinder 4 are movably connected to the cylinder swing fixing seats 3 by connecting shafts. At the center of the other end of the lower surface of the bottom substrate 2, a fixed connection arm 8 is provided. The fixed connection arm 8 is fixedly installed on the lower surface of the bottom substrate 2.

[0028] At one end of the fixed connection arm 8, a limit connection swing arm 7 is provided. At one end of the limit connection swing arm 7, a lifting swing arm 12 is provided. The fixed connection arm 8, the limit connection swing arm 7, and the lifting swing arm 12 are movably connected by connecting shafts. At the end of the push shaft of the lifting cylinder 4, a mating connection head 9 is provided. One end of the mating connection head 9 is fixedly connected to the push shaft of the lifting cylinder 4. The other end of the mating connection head 9 is movably connected to the junction of the limit connection swing arm 7 and the lifting swing arm 12 by a connecting shaft. The limit connection swing arm 7 is arranged in the swing arm moving slot 10 inside the bottom substrate 2.

[0029] Vertically arranged inside the bottom substrate 2 is a linear bearing 5. The linear bearing 5 is vertically arranged inside the bottom substrate 2. Between the linear bearing 5 and the bottom substrate 2, there is a fixed connecting piece. The fixed connecting piece is fixed on the upper surface of the bottom substrate 2. Through the fixed connecting piece, the linear bearing 5 is firmly fixed to the bottom substrate 2. Inside the linear bearing 5, a guide rod 6 is provided. The linear bearing 5 provides a limiting function for the guide rod 6 to ensure the stable operation of the guide rod 6 in the vertical direction. At the top end of the guide rod 6, a lifting platform 11 is provided. The top end of the guide rod 6 is fixedly connected to the lower surface of the lifting platform 11.

[0030] At the center of the bottom of the lifting platform 11, a connection head 13 is provided. The connection head 13 and the lifting platform 11 are of an integral structure. On the upper surface of the lifting platform 11, symmetrically arranged near the two side edges are mating installation edges 14. Inside the mating installation edges 14, there are lifting contact heads. The lifting platform 11 moves up and down in the vertical direction under the indirect drive of the lifting cylinder 4, thereby achieving lifting in the vertical direction.

[0031] This reverse self-locking lifting mechanism is a lifting device used on a conveyor line. It uses a lower cylinder to pull a connecting rod to lift and lower the lifting platform. The limit connection swing arm has a self-locking mechanism to ensure that the lifting platform will not move down when a downward force is applied, guaranteeing the safety of the equipment.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A reverse self-locking lifting mechanism, comprising a reverse self-locking lifting mechanism body (1), characterized in that: The reverse self-locking lifting mechanism body (1) is provided with a bottom base plate (2), and a cylinder swing fixing seat (3) is symmetrically provided at a central position near one end of the lower surface of the bottom base plate (2), and the cylinder swing fixing seat (3) is fixedly connected to the lower surface of the bottom base plate (2) by screws, and a lifting cylinder (4) is provided between the two cylinder swing fixing seats (3), and the two sides of the lifting cylinder (4) are movably connected to the cylinder swing fixing seat (3) by a connecting shaft, and a fixed connecting arm (8) is provided at the center of the other end of the lower surface of the bottom base plate (2), and the fixed connecting arm (8) is fixedly installed to the lower surface of the bottom base plate (2); One end of the fixed connecting arm (8) is provided with a limit connecting swing arm (7), and one end of the limit connecting swing arm (7) is provided with a lifting swing arm (12), and the fixed connecting arm (8), the limit connecting swing arm (7) and the lifting swing arm (12) are movably connected by a connecting shaft; A linear bearing (5) is provided in the vertical direction inside the bottom substrate (2). The linear bearing (5) is vertically arranged inside the bottom substrate (2). A fixed connection piece is provided between the linear bearing (5) and the bottom substrate (2). The fixed connection piece is fixed to the upper surface of the bottom substrate (2). A guide rod (6) is provided inside the linear bearing (5). A lifting platform (11) is provided at the top end of the guide rod (6). The top end of the guide rod (6) is fixedly connected to the lower surface of the lifting platform (11).

2. A reverse self-locking lifting mechanism according to claim 1, characterized in that: The push shaft end of the lifting cylinder (4) is provided with a matching connector (9), one end of which is fixedly connected to the push shaft of the lifting cylinder (4), and the other end of which is movably connected to the limit connecting swing arm (7) and the lifting swing arm (12) by a connecting shaft.

3. A reverse self-locking lifting mechanism according to claim 1, characterized in that: The bottom substrate (2) is provided with a swing arm movable groove (10) inside, and linear bearing matching installation grooves are provided on both sides of the swing arm movable groove (10), and both the swing arm movable groove (10) and the linear bearing matching installation grooves pass through the bottom substrate (2).

4. A reverse self-locking lifting mechanism according to claim 1, characterized in that: A connector (13) is provided at the center of the bottom of the jacking platform (11), and the connector (13) and the jacking platform (11) are an integral structure. The upper surface of the jacking platform (11) is symmetrically provided with matching installation edges (14) near the edges on both sides, and a jacking contact is provided on the inner side of the matching installation edges (14).

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