Jacking mechanism for eliminating coaxial clamping

Abstract

The utility model belongs to the technical field of jacking mechanisms, particularly relates to a jacking mechanism capable of eliminating coaxial clamping, and aims to solve the problem that the existing pneumatic jacking mechanism is easy to generate coaxial clamping during use and affects the actual production and work, the following scheme is provided: the jacking mechanism comprises a mounting plate, and an air cylinder is fixed at the bottom end of the mounting plate; a jacking plate for jacking is arranged on the upper side of the mounting plate; two linear bearings are fixed in the mounting plate, oil-free bushings are arranged in the two linear bearings, guide shafts are arranged in the two oil-free bushings in a matched and sliding mode, and the two guide shafts are fixed to the bottom end of the top plate through bolts; the device has the advantages of reasonable structure, simplicity in operation, high stability, convenience in cleaning and the like, and can be widely applied to the fields of industrial automation, mechanical manufacturing and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a lifting mechanism for eliminating coaxial jamming. Background Art

[0002] A lifting mechanism is a common device for lifting heavy objects, and it is widely used in various mechanical engineering and industrial production.

[0003] A pneumatic lifting mechanism usually consists of a cylinder and a guiding mechanism. The cylinder is driven by a pneumatic system to generate linear motion, and the guiding mechanism provides support and guidance to ensure the stability and accuracy of the mechanism. When a pneumatic lifting mechanism is used, the problem of coaxial jamming is likely to occur, which will affect the actual production work. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that coaxial jamming is likely to occur when a pneumatic lifting mechanism is used in the prior art, which will affect the actual production work, and to propose a lifting mechanism for eliminating coaxial jamming.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A lifting mechanism for eliminating coaxial jamming includes a mounting plate. A cylinder is fixed to the bottom end of the mounting plate, and a top plate for lifting is provided above the mounting plate;

[0007] Wherein, two linear bearings are fixed in the mounting plate. Oil-free bushings are arranged in both of the two linear bearings. Guide shafts are slidably fitted in both of the two oil-free bushings. Both of the two guide shafts are fixed to the bottom end of the top plate by bolts;

[0008] A floating joint mounting seat is fixed to the bottom end of the top plate by bolts. A buffer gap is formed in the floating joint mounting seat. The output end of the cylinder is threadedly connected with a floating joint. The floating joint is in a T shape. The head of the floating joint is arranged in the buffer gap. The floating joint can move in the buffer gap. A backing plate is fixed in the buffer gap. The backing plate and the floating joint are in pressing contact;

[0009] Two groups of cleaning parts are arranged on the mounting plate for cleaning the surfaces of the two guide shafts. Both of the two groups of cleaning parts include two cleaning brushes. The four cleaning brushes are respectively in contact with the surfaces of the two guide shafts. Four positioning plates are fixed to the top end of the mounting plate. A set of connecting components are arranged between the four positioning plates and the four cleaning brushes.

[0010] In a possible design, a circular positioning pin and a diamond positioning pin for installing a workpiece carrier are fixed to the top end of the top plate.

[0011] In a possible design, a matching groove is formed in the positioning plate, a matching block slides in the matching groove, an arc-shaped connecting plate is fixed to the top end of the matching block, and the cleaning brush is arranged in the arc-shaped surface of the arc-shaped connecting plate.

[0012] In a possible design, each set of the connecting components includes a first groove formed in the matching block, a limiting rod is fixed in the first groove, two clamping blocks slide on the surface of the limiting rod, two clamping grooves are formed in the positioning plate, the two clamping blocks are respectively clamped with the two clamping grooves, a clamping spring is fixed between the two clamping blocks, and the clamping spring is sleeved on the surface of the limiting rod.

[0013] In a possible design, the connecting component further includes a second groove formed in the arc-shaped connecting plate and communicating with the first groove, two pressing blocks slide in the second groove, and the two pressing blocks are respectively fixed to the top ends of the two clamping blocks.

[0014] In a possible design, a magic tape for sticking hairs is arranged at the rear end of the cleaning brush, a magic tape with hooks is fixed to the arc-shaped inner wall of the arc-shaped connecting plate, and the magic tape for sticking hairs is lapped with the magic tape with hooks.

[0015] In this application, when in use, the cylinder is started to rise, and the floating joint is driven to rise through the output shaft. The floating joint moves in the floating joint mounting seat and presses the backing plate, so that the top plate rises synchronously. When rising, the guide shaft is driven to move. When the guide shaft moves, it is wiped and cleaned by the two cleaning brushes between the two cleaning brushes, which can effectively ensure the cleanliness of the surface of the guide shaft and prevent jamming from occurring.

[0016] By pressing the pressing blocks on both sides, the two clamping blocks can be driven to move towards the approaching direction, and the two clamping blocks respectively leave the two clamping grooves, so that the arc-shaped connecting plate can be removed, and the cleaning brush can be replaced. After replacement, the clamping blocks are reinserted into the clamping grooves, and the arc-shaped connecting plate can be repositioned, which is convenient for use.

[0017] Beneficial effects

[0018] In the present utility model, by arranging structures such as linear bearings, oil-free bushings and floating joints, the friction between the guide shaft and the guide sleeve is effectively reduced, and the smoothness of sliding is improved, thereby eliminating the problem of coaxial jamming. At the same time, by arranging the cleaning part and the detachable connecting component, it is convenient to clean the surface of the guide shaft, and the cleaning brush can be replaced without disassembling the mechanism, which improves the operation efficiency and convenience. In addition, by arranging structures such as circular positioning pins and diamond-shaped positioning pins, the tooling fixture can be stably fixed on the top plate, which improves the stability and reliability of the lifting mechanism.

[0019] In this utility model, it has the advantages of reasonable structure, simple operation, high stability, convenient cleaning, etc., and can be widely applied to the fields of industrial automation, machinery manufacturing, etc. Brief Description of the Drawings

[0020] Figure 1 It is the main perspective view of a jacking mechanism for eliminating coaxial jamming proposed by this utility model;

[0021] Figure 2 It is the front view of a jacking mechanism for eliminating coaxial jamming proposed by this utility model;

[0022] Figure 3 It is the sectional view of a jacking mechanism for eliminating coaxial jamming proposed by this utility model;

[0023] Figure 4 It is the partial sectional view of a jacking mechanism for eliminating coaxial jamming proposed by this utility model.

[0024] In the figure: 1, mounting plate; 2, guide shaft; 3, cylinder; 4, linear bearing; 5, oil-free bushing; 6, floating joint; 7, backing plate; 8, round locating pin; 9, diamond locating pin; 10, top plate; 11, floating joint mounting seat; 12, positioning plate; 13, arc connecting plate; 14, cleaning brush; 15, matching groove; 16, matching block; 17, first groove; 18, clamping groove; 19, clamping block; 20, limiting rod; 21, clamping spring; 22, second groove; 23, pressing block. 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.

[0026] Embodiment 1

[0027] Refer to Figures 1-4, a lifting mechanism for eliminating coaxial jamming, which is applied in the technical field of lifting mechanisms. It includes a mounting plate 1, and a cylinder 3 is fixed at the bottom end of the mounting plate 1. The cylinder 3 is used to provide the power for lifting. A top plate 10 for lifting is provided on the upper side of the mounting plate 1. Among them, two linear bearings 4 are fixed in the mounting plate 1, and oil-free bushings 5 are provided in both of the two linear bearings 4. The setting of the oil-free bushings 5 reduces the friction of the guide shaft 2 in the linear bearing 4 and improves the smoothness of sliding. Guide shafts 2 are slidably fitted in both of the two oil-free bushings 5. The guide shafts 2 are used to guide the top plate 10 so that it can be lifted and lowered stably. Both of the two guide shafts 2 are fixed to the bottom end of the top plate 10 by bolts; a floating joint mounting seat 11 is fixed to the bottom end of the top plate 10 by bolts. A buffer gap is provided in the floating joint mounting seat 11. The output end of the cylinder 3 is threadedly connected with a floating joint 6. The floating joint 6 is fitted and installed with the floating joint mounting seat 11, and there are gaps axially and radially between the two, which enables the floating joint 6 to achieve radial floating inside the floating joint mounting seat 11, thereby eliminating coaxiality errors. When the cylinder 3 is ventilated, the piston rod outputs. The cylinder piston rod is threadedly connected with the floating joint 6, and the top plate 10 is pushed upward through the backing plate 7. During the upward movement of the top plate, one end of the guide shaft 2 is connected to the top plate 10 by screws. The guide shaft 2 slides in cooperation with the oil-free bushing 5, reducing the sliding friction of the guide shaft 2 and reducing wear. Circular positioning pins 8 and diamond-shaped positioning pins 9 are installed on the top surface of the top plate 10, which can facilitate the positioning worker to load a fixture equipped with a positioning sleeve matching the positioning pins; when the top end of the cylinder 3 is ventilated, the piston rod moves downward, and the top plate 10 is driven downward through the guide shaft 2, so that the circular positioning pin 8 and the diamond-shaped positioning pin 9 are disengaged from the fixture.

[0028] Embodiment 2

[0029] Reference Figures 1-4 , on the basis of Embodiment 1, an improvement is made: two sets of cleaning parts are provided. Both sets of cleaning parts are arranged on the mounting plate 1 to clean the surfaces of the two guide shafts 2 to prevent dust or impurities from adhering to the surfaces of the guide shafts 2 and affecting their sliding effect. Both sets of cleaning parts include two cleaning brushes 14. The four cleaning brushes 14 are respectively in contact with the surfaces of the two guide shafts 2 to brush off the dust or impurities on the surfaces of the guide shafts 2. Four positioning plates 12 are fixed to the top end of the mounting plate 1. A set of connecting components are provided between each of the four positioning plates 12 and the four arc-shaped connecting plates 13. The connecting components are used to detachably connect the arc-shaped connecting plates 13 to the positioning plates 12, so as to facilitate the replacement or maintenance of the cleaning brushes 14.

[0030] Furthermore, circular positioning pins 8 and diamond-shaped positioning pins 9 for installing the fixture are fixed to the top end of the top plate 10 to stably fix the fixture on the top plate 10.

[0031] A matching groove 15 is formed in the positioning plate 12, a matching block 16 slides in the matching groove 15, an arc-shaped connecting plate 13 is fixed to the top end of the matching block 16, and the cleaning brush 14 is arranged in the arc-shaped surface of the arc-shaped connecting plate 13 so that the cleaning brush 14 can closely fit on the surface of the guide shaft 2.

[0032] Each set of connecting components includes a first groove 17 formed in the matching block 16. A limiting rod 20 is fixed in the first groove 17. Two clamping blocks 19 slide on the surface of the limiting rod 20. Two clamping grooves 18 are formed in the positioning plate 12. The two clamping blocks 19 are respectively clamped with the two clamping grooves 18, so as to fix the arc-shaped connecting plate 13 on the positioning plate 12. A clamping spring 21 is fixed between the two clamping blocks 19. The clamping spring 21 is sleeved on the surface of the limiting rod 20. The clamping spring 21 is used to push the clamping block 19 to move into the clamping groove 18 to achieve automatic clamping.

[0033] The connecting component further includes a second groove 22 formed in the arc-shaped connecting plate 13 and communicating with the first groove 17. Two pressing blocks 23 slide in the second groove 22. The two pressing blocks 23 are respectively fixed to the top ends of the two clamping blocks 19, so as to push the clamping block 19 to move by pressing the pressing block 23, thereby releasing the clamping state and facilitating the removal of the arc-shaped connecting plate 13 from the positioning plate 12.

[0034] A magic tape for sticking hairs is arranged at the rear end of the cleaning brush 14, and a magic tape with hooks is fixed to the arc-shaped inner wall of the arc-shaped connecting plate 13. The magic tape for sticking hairs and the magic tape with hooks are overlapped, so as to conveniently detachably connect the cleaning brush 14 to the arc-shaped connecting plate 13 for replacing the cleaning brush 14.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A jacking mechanism for eliminating coaxial jamming, characterized in that, Including: A mounting plate (1), a cylinder (3) is fixed at the bottom end of the mounting plate (1), and a top plate (10) for jacking is arranged on the upper side of the mounting plate (1); Wherein, two linear bearings (4) are fixed in the mounting plate (1), oil-free bushings (5) are arranged in both of the two linear bearings (4), guide shafts (2) are slidably fitted in both of the two oil-free bushings (5), and both of the two guide shafts (2) are fixed to the bottom end of the top plate (10) by bolts; A floating joint mounting seat (11) is fixed to the bottom end of the top plate (10) by bolts, a buffer gap is formed in the floating joint mounting seat (11), the output end of the cylinder (3) is threadedly connected with a floating joint (6), the floating joint (6) is T-shaped, the head of the floating joint (6) is arranged in the buffer gap, the floating joint (6) can move in the buffer gap, a backing plate (7) is fixed in the buffer gap, and the backing plate (7) is in extrusion contact with the floating joint (6); Two groups of cleaning parts, both of the two groups of cleaning parts are arranged on the mounting plate (1) for cleaning the surfaces of the two guide shafts (2), both of the two groups of cleaning parts include two cleaning brushes (14), the four cleaning brushes (14) are respectively in contact with the surfaces of the two guide shafts (2), and four positioning plates (12) are fixed to the top end of the mounting plate (1), and a set of connecting components are arranged between the four positioning plates (12) and the four cleaning brushes (14).

2. The lifting mechanism for eliminating coaxial jamming according to claim 1, characterized in that, A circular positioning pin (8) and a diamond-shaped positioning pin (9) for installing a workpiece carrier are fixed to the top end of the top plate (10).

3. The lifting mechanism for eliminating coaxial jamming according to claim 2, wherein, A matching groove (15) is formed in the positioning plate (12), a matching block (16) is slidably arranged in the matching groove (15), an arc-shaped connecting plate (13) is fixed to the top end of the matching block (16), and the cleaning brush (14) is arranged in the arc-shaped surface of the arc-shaped connecting plate (13).

4. The lifting mechanism for eliminating coaxial jamming according to claim 3, characterized in that, Each set of the connecting components includes a first groove (17) formed in the matching block (16), a limiting rod (20) is fixed in the first groove (17), two clamping blocks (19) are slidably arranged on the surface of the limiting rod (20), two clamping grooves (18) are formed in the positioning plate (12), the two clamping blocks (19) are respectively clamped with the two clamping grooves (18), and a clamping spring (21) is fixed between the two clamping blocks (19), and the clamping spring (21) is sleeved on the surface of the limiting rod (20).

5. The lifting mechanism for eliminating coaxial jamming according to claim 4, characterized in that, The connecting component further includes a second groove (22) formed in the arc-shaped connecting plate (13) and communicating with the first groove (17), two pressing blocks (23) are slidably arranged in the second groove (22), and the two pressing blocks (23) are respectively fixed to the top ends of the two clamping blocks (19).

6. The lifting mechanism for eliminating coaxial jamming according to claim 4, wherein, A magic tape for sticking hairs is arranged at the rear end of the cleaning brush (14), and a magic tape for hooking hairs is fixed to the arc-shaped inner wall of the arc-shaped connecting plate (13), and the magic tape for sticking hairs and the magic tape for hooking hairs are overlapped.

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