Self-locking mechanism of heavy power and free chain maintenance elevator

Abstract

The utility model relates to a self-locking mechanism of a heavy power and free chain maintenance lifter, which comprises a base, a lifter frame fixedly mounted on the base and a lifting platform movably arranged in the lifter frame, and the self-locking mechanism is arranged between the lifter frame and the lifting platform. The self-locking mechanism comprises a rack fixedly installed on the inner wall of the elevator frame and installation pipes fixedly installed on the two sides of the lifting platform. According to the self-locking mechanism of the heavy power and free chain maintenance lifter, the lifting platform and the lifter frame are connected through the mounting pipe, the gear and the rack, in the normal lifting process of the lifting platform, the gear is meshed with the rack through a tooth profile and rotates to adjust the position, and when the position of the lifting platform is fixed, the gear is locked; the electric push rod arranged at one end drives the gear to change the position, so that the extension pipe connected to the gear and the chuck are attached relative to the locking disc fixed to the lifting platform, and the gear cannot rotate to overcome limitation.

Description

Technical Field

[0001] The present application relates to the technical field of accumulation chain elevators, and in particular to a self-locking mechanism of a heavy-duty accumulation chain maintenance elevator. Background Art

[0002] The accumulation and freeing overhead conveyor is a kind of transportation equipment suitable for high-productivity and flexible production systems. It not only plays a role in transportation, but also runs through the entire production line, integrating sophisticated process operation, storage and transportation functions.

[0003] Since the accumulation chain is suspended at a high place to transport heavy objects, a lift is needed when the accumulation chain is being repaired. The stay support of the lift is mainly achieved by hydraulic power. When there is a problem with the hydraulic seal or the hydraulic pump fails, the lift is likely to lose its support force and fall rapidly, which poses certain hidden dangers. A self-locking mechanism for a heavy-duty accumulation chain maintenance lift is proposed to solve the above-mentioned problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present application provides a self-locking mechanism for a heavy-duty accumulation chain maintenance elevator, which has the advantages of self-locking restrictions on the platform end of the elevator and improving the safety of the elevator.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A self-locking mechanism of a heavy-duty accumulation chain maintenance elevator, comprising a base, an elevator frame fixedly mounted on the base, and a lifting platform movable in the elevator frame, wherein a self-locking mechanism is arranged between the elevator frame and the lifting platform;

[0006] The self-locking mechanism includes a rack fixedly mounted on the inner wall of the elevator frame, a mounting tube fixedly mounted on both sides of the lifting platform, a locking member arranged on one side of the mounting tube, a gear member arranged on one side of the mounting tube and an adjusting member arranged on the outside of the lifting platform.

[0007] Furthermore, the gear member includes a gear rotatably mounted on one end of the mounting tube, an extension tube fixedly connected to the gear, and a chuck fixedly mounted on the end of the extension tube.

[0008] Furthermore, the diameter of the extension tube is smaller than the inner wall diameter of the installation tube.

[0009] Furthermore, a connecting ring is fixedly installed on one side surface of the gear facing the mounting tube, a sleeve ring is fixedly installed on one end of the mounting tube facing the gear, and the connecting ring is rotatably connected to the inner wall of the sleeve ring.

[0010] Furthermore, the locking member includes a fixing seat fixedly mounted on the side of the lifting platform, and a locking plate fixedly mounted on the end of the fixing seat, and the locking plate extends into the mounting tube and is fixedly connected to the mounting tube.

[0011] Furthermore, a clamping bead is fixedly mounted on one side surface of the chuck facing the locking disk, and a groove is provided on one side surface of the locking disk facing the chuck for the clamping bead to be clamped.

[0012] Furthermore, the adjusting member includes an electric push rod fixedly mounted on one side of the lifting platform, an extension rod fixedly mounted on the output end of the electric push rod, and a rotating sleeve fixedly mounted on one side surface of the electric push rod facing the gear, and the rotating sleeve is rotatably connected to the extension rod.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The self-locking mechanism of the heavy-duty accumulation chain maintenance elevator is connected by setting a lifting platform and an elevator frame through a mounting tube, a gear and a rack. During the normal lifting process of the lifting platform, the gear is tooth-engaged with the rack and rotates to adjust its position. When the position of the lifting platform is fixed, the electric push rod arranged at one end drives the gear to change its position, so that the extension tube and the chuck connected to the gear are fitted relative to the locking plate fixed on the lifting platform, so that the gear cannot rotate to overcome the restriction. At this time, the gear is tooth-engaged with the rack, so that the lifting platform maintains its position unchanged, thereby stably realizing the self-locking restriction of the lifting platform and improving the self-locking safety of the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A top view of the overall structure of this application;

[0016] Figure 2 A schematic diagram of the structure of the installation pipe for this application;

[0017] Figure 3 This is a structural stereogram of the chuck of this application.

[0018] In the figure: 1. base; 2. lift frame; 3. lift platform; 4. rack; 5. mounting tube; 6. collar; 7. connecting ring; 8. gear; 9. extension tube; 10. chuck; 11. bead; 12. locking plate; 13. fixing seat; 14. electric push rod; 15. extension rod; 16. rotating sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] See also Figure 1-3 In this embodiment, a self-locking mechanism of a heavy-duty accumulation chain maintenance elevator includes a base 1, an elevator frame 2 fixedly mounted on the base 1, and a lifting platform 3 movable in the elevator frame 2. A hydraulic device is provided on the base 1 for lifting the lifting platform 3, so that the lifting platform 3 can move stably along the elevator frame 2.

[0021] The specific hydraulic device is composed of the following main components:

[0022] Hydraulic pump: The hydraulic pump is the power source of the hydraulic system, usually driven by an electric motor, used to generate high-pressure hydraulic oil to provide power to the hydraulic system.

[0023] Hydraulic cylinder: A hydraulic cylinder is a device that converts hydraulic energy into mechanical energy. It generates linear motion through the pressure of hydraulic oil and is used to realize the lifting function of the elevator.

[0024] Hydraulic valve: Hydraulic valve is used to control the flow and pressure of hydraulic oil in the hydraulic system, including controlling the lifting speed, stop and locking functions of the hydraulic cylinder.

[0025] Hydraulic oil tank: The hydraulic oil tank is used to store hydraulic oil and provide cooling, filtering and oil compensation functions to ensure the normal operation of the hydraulic system.

[0026] Hydraulic pipeline: Hydraulic pipeline is used to connect various hydraulic components such as hydraulic pumps, hydraulic cylinders, hydraulic valves, etc., to transmit hydraulic oil and realize the lifting function of the lift.

[0027] In this embodiment, there are gaps on the inner walls on both sides of the elevator frame 2, and a self-locking mechanism is provided between the elevator frame 2 and the lifting platform 3 to complete the locking restriction of the movement of the lifting platform 3.

[0028] It should be noted that the self-locking mechanism includes a rack 4 fixedly mounted on the inner wall of the lift frame 2, a mounting tube 5 fixedly mounted on both sides of the lifting platform 3, a locking member arranged on one side of the mounting tube 5, a gear member arranged on one side of the mounting tube 5 and an adjusting member arranged on the outside of the lifting platform 3.

[0029] The gear component in this embodiment includes a gear 8 rotatably mounted on one end of the mounting tube 5, an extension tube 9 fixedly connected to the gear 8, and a chuck 10 fixedly mounted at the end of the extension tube 9. The diameter of the extension tube 9 is smaller than the inner wall diameter of the mounting tube 5, so that the extension tube 9 can extend into the mounting tube 5 for movement. The diameter of the chuck 10 corresponds to the mounting tube 5, so that the gear 8 can rotate stably relative to the mounting tube 5.

[0030] In this embodiment, a connecting ring 7 is fixedly installed on one side surface of the gear 8 facing the mounting tube 5, and a sleeve ring 6 is fixedly installed on one end of the mounting tube 5 facing the gear 8. The connecting ring 7 is rotatably connected to the inner wall of the sleeve ring 6, so that the rotational stability of the gear 8 relative to the mounting tube 5 is further improved.

[0031] It should be noted that the locking member includes a fixing seat 13 fixedly mounted on the side of the lifting platform 3 , and a locking plate 12 fixedly mounted on the end of the fixing seat 13 . The locking plate 12 extends into the mounting tube 5 and is fixedly connected to the mounting tube 5 .

[0032] The chuck 10 in this embodiment has a clamping bead 11 fixedly mounted on one side surface facing the locking plate 12. The locking plate 12 has a groove on one side surface facing the chuck 10 for the clamping bead 11 to engage with. The rotation of the chuck 10 can be restricted by pushing the clamping bead 11 into the groove.

[0033] In this embodiment, the adjusting member includes an electric push rod 14 fixedly mounted on one side of the lifting platform 3, an extension rod 15 fixedly mounted on the output end of the electric push rod 14, and a rotating sleeve 16 fixedly mounted on one side surface of the gear 8 facing the electric push rod 14. The rotating sleeve 16 is rotatably connected to the extension rod 15. When the position of the gear 8 is limited, the position of the rotating sleeve 16 relative to the electric push rod 14 can be adjusted under the push of the extension rod 15.

[0034] The lifting platform 3 and the lift frame 2 are connected by means of the mounting tube 5, the gear 8 and the rack 4. During the normal lifting process of the lifting platform 3, the gear 8 adjusts its position by meshing with the rack 4 and rotating. When the position of the lifting platform 3 is fixed, the electric push rod 15 arranged at one end drives the gear 8 to change its position, so that the extension tube 9 and the chuck 10 connected to the gear 8 are fitted relative to the locking plate 12 fixed on the lifting platform 3, so that the gear 8 cannot rotate to overcome the restriction. At this time, the gear 8 meshes with the rack 4 by teeth, so that the lifting platform 3 maintains its position unchanged, thereby stably realizing the self-locking restriction of the lifting platform 3 and improving the self-locking safety of the lifting platform 3.

[0035] The working principle of the above embodiment is:

[0036] After the lifting platform 3 is controlled by the hydraulic system to change its position relative to the lifting frame 2, the lifting platform 3 maintains its original position. At this time, the gear 8 is tooth-engaged with the rack 4 on the inner side of the lifting frame 2 to achieve rotation restriction. By controlling the electric push rod 14, the electric push rod 14 drives the extension rod 15 on the output end to rotate. The extension rod 15 is threadedly engaged with the rotating sleeve 16 during rotation, so that the gear 8 adjusts the spacing relative to the electric push rod 14. The gear 8 contacts the rack 4 through the tooth surface and changes its position relative to the rack 4. At this time, the gear 8 drives the fixedly connected extension tube 9 and the chuck 10 connected to the end of the extension tube 9 toward the locking disk 12, and the protruding bead 11 installed on the chuck 10 is embedded in the groove on the side of the locking disk 12. At this time, the gear 8 cannot rotate to overcome the bead 11 and the groove, and the self-locking of the lifting platform 3 is achieved when the gear 8 is tooth-engaged with the rack 4.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A self-locking mechanism for a heavy-duty accumulation chain maintenance elevator, comprising a base (1), an elevator frame (2) fixedly mounted on the base (1), and a lifting platform (3) movable in the elevator frame (2), characterized in that: A self-locking mechanism is provided between the lift frame (2) and the lift platform (3); The self-locking mechanism comprises a rack (4) fixedly mounted on the inner wall of the lift frame (2), a mounting tube (5) fixedly mounted on both sides of the lift platform (3), a locking member arranged on one side of the mounting tube (5), a gear member arranged on one side of the mounting tube (5), and an adjusting member arranged on the outside of the lift platform (3).

2. The self-locking mechanism of a heavy-duty accumulation chain maintenance elevator according to claim 1 is characterized in that: The gear member comprises a gear (8) rotatably mounted on one end of the mounting tube (5), an extension tube (9) fixedly connected to the gear (8), and a chuck (10) fixedly mounted on the end of the extension tube (9).

3. The self-locking mechanism of a heavy-duty accumulation chain maintenance elevator according to claim 2 is characterized in that: The diameter of the extension tube (9) is smaller than the inner wall diameter of the installation tube (5).

4. The self-locking mechanism of a heavy-duty accumulation chain maintenance elevator according to claim 2 is characterized in that: A connecting ring (7) is fixedly mounted on one side surface of the gear (8) facing the mounting tube (5); a sleeve ring (6) is fixedly mounted on one end of the mounting tube (5) facing the gear (8); and the connecting ring (7) is rotatably connected to the inner wall of the sleeve ring (6).

5. The self-locking mechanism of a heavy-duty accumulation chain maintenance elevator according to claim 2, characterized in that: The locking member comprises a fixing seat (13) fixedly mounted on the side of the lifting platform (3), and a locking plate (12) fixedly mounted on the end of the fixing seat (13); the locking plate (12) extends into the mounting tube (5) and is fixedly connected to the mounting tube (5).

6. The self-locking mechanism of a heavy-duty accumulation chain maintenance elevator according to claim 5, characterized in that: A clamping bead (11) is fixedly mounted on one side surface of the chuck (10) facing the locking plate (12), and a groove is provided on one side surface of the locking plate (12) facing the chuck (10) for clamping the clamping bead (11).

7. The self-locking mechanism of a heavy-duty accumulation chain maintenance elevator according to claim 1, characterized in that: The adjusting member comprises an electric push rod (14) fixedly mounted on a side surface of the lifting platform (3), and an extension rod (15) fixedly mounted on an output end of the electric push rod (14); a rotating sleeve (16) is fixedly mounted on a side surface of the gear (8) facing the electric push rod (14); and the rotating sleeve (16) is rotatably connected to the extension rod (15).

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