Telescopic device convenient to maintain

Abstract

The utility model discloses a telescopic device convenient to maintain, which relates to the technical field of telescopic devices and comprises a mounting seat, a driving motor is fixedly arranged below the surface of the mounting seat, a coating cylinder is arranged above the surface of the mounting seat, a first-stage telescopic cylinder is sleeved in the coating cylinder, and a second-stage telescopic cylinder is arranged in the first-stage telescopic cylinder. A second-stage telescopic cylinder is arranged in the first-stage telescopic cylinder in a sleeved mode, a fixing piece is fixedly arranged in the middle of the bottom end of the inner surface of the first-stage telescopic cylinder and the middle of the bottom end of the inner surface of the second-stage telescopic cylinder in a penetrating mode, the fixing piece is arranged to be in a T shape, and thread lines are arranged on the inner surface of the fixing piece. A sleeve is rotationally connected to the upper portion of the surface of a fixing piece installed on the inner surface of the first-stage telescopic cylinder through a bearing. Compared with an existing common telescopic device, the telescopic device convenient to maintain can conduct multi-stage telescopic adjustment through one driving piece, is simple in structure and manufacturing, low in cost, stable in transmission, high in reliability and convenient to maintain, and the whole telescopic device is in mutual connection transmission through mechanical structures.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic devices, in particular to a telescopic device which is easy to maintain. Background Art

[0002] Telescopic devices are widely used in engineering. They are used in many engineering machinery to achieve a large telescopic ratio and improve space utilization.

[0003] For example, the public document with application number 202020287834.6 discloses a multi-stage telescopic device. The utility model does not require additional design of oil cylinders and oil circuits, and there will be no oil pollution. There is no need to separately design a dual-motor control method and no need to add circuits or single-chip microcomputers. It has the advantages of simple structure and easy production. However, the internal structure of the telescopic device is relatively complex during manufacturing and use, which increases the production cost of the entire device to a certain extent and is not convenient for the maintenance of the telescopic device.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a telescopic device that is easy to maintain is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a telescopic device that is easy to maintain, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic device that is easy to maintain, comprising a mounting seat, a driving motor is fixedly arranged below the surface of the mounting seat, a covering tube is arranged above the surface of the mounting seat, a primary telescopic tube is sleeved inside the covering tube, a secondary telescopic tube is sleeved inside the primary telescopic tube, and a fixing piece is fixedly provided through the middle of the bottom end of the inner surface of the primary telescopic tube and the secondary telescopic tube.

[0007] Preferably, the shape of the fixing piece is set to be a "T" shape, and the inner surface of the fixing piece is provided with thread patterns.

[0008] Preferably, a sleeve is rotatably connected to the surface of the fixing piece installed on the inner surface of the primary telescopic cylinder via a bearing, and the outer surface of the sleeve is threadedly connected to the fixing piece on the inner surface of the secondary telescopic cylinder.

[0009] Preferably, a screw rod is provided at the upper end of the driving motor, and the upper end of the screw rod passes through the mounting seat and the covering cylinder.

[0010] Preferably, the screw rod is threadedly connected to a fixing piece installed on the inner surface of the primary telescopic cylinder, and two limiting grooves are correspondingly provided on the front and rear sides of the surface of the screw rod.

[0011] Preferably, protrusions are fixedly provided on the front and rear sides of the inner surface of the sleeve, and the protrusions are slidably provided inside the limiting grooves.

[0012] Preferably, slide grooves are provided on left and right sides of the inner surfaces of the covering tube, the primary telescopic tube and the secondary telescopic tube, and sliders are slidably provided inside the slide grooves, and the sliders are fixedly connected to the primary telescopic tube and the secondary telescopic tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can perform multi-stage telescopic adjustment through the arrangement of a driving motor, a covering tube, a primary telescopic tube, a secondary telescopic tube, a fixing member, a sleeve, a convex block, a screw rod and a limit groove through a driving member. The utility model has a simple structure, simple manufacturing, low cost, and the whole adopts a mechanical structure to connect and transmit to each other, so the transmission is stable, the reliability is high, and the maintenance is convenient.

[0015] 2. The utility model sets the slide groove and the slider. When the primary telescopic tube and the secondary telescopic tube are extended or contracted, the slide groove limits the slider, thereby limiting the primary telescopic tube and the secondary telescopic tube, preventing the primary telescopic tube and the secondary telescopic tube from rotating with the screw rod and the sleeve, so that the primary telescopic tube and the secondary telescopic tube can move up and down stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the covering tube, the primary telescopic tube and the secondary telescopic tube of the utility model;

[0018] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the disassembled structure of the sleeve and the fixing member of the utility model.

[0020] In the figure: 1. mounting seat; 2. driving motor; 3. covering cylinder; 4. primary telescopic cylinder; 5. secondary telescopic cylinder; 6. fixing piece; 7. sleeve; 8. bump; 9. screw rod; 10. limiting groove; 11. slide groove; 12. slider. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-Figure 4 As shown, a telescopic device that is easy to maintain includes a mounting seat 1, a driving motor 2 is fixedly arranged below the surface of the mounting seat 1, a covering tube 3 is arranged above the surface of the mounting seat 1, a primary telescopic tube 4 is sleeved inside the covering tube 3, a secondary telescopic tube 5 is sleeved inside the primary telescopic tube 4, and a fixing piece 6 is fixedly provided through the middle of the bottom end of the inner surface of the primary telescopic tube 4 and the secondary telescopic tube 5.

[0023] By adopting the above technical solution, the primary telescopic cylinder 4 and the secondary telescopic cylinder 5 fit and slide as a whole, and can extend and contract up and down.

[0024] Furthermore, the shape of the fixing member 6 is set to be a "T" shape, and the inner surface of the fixing member 6 is provided with thread patterns.

[0025] By adopting the above technical solution, the fixing member 6 provides threaded parts for the primary telescopic cylinder 4 and the secondary telescopic cylinder 5 .

[0026] Furthermore, a sleeve 7 is rotatably connected to the upper surface of the fixing member 6 installed on the inner surface of the primary telescopic tube 4 through a bearing, and the upper surface of the outer surface of the sleeve 7 is threadedly connected to the fixing member 6 on the inner surface of the secondary telescopic tube 5 .

[0027] By adopting the above technical solution, the sleeve 7 is threadedly connected to the upper fixing member 6 by using the threads on the outer surface, so that the secondary telescopic cylinder 5 can be further extended by pushing.

[0028] Furthermore, a screw rod 9 is provided at the upper end of the driving motor 2, and the upper end of the screw rod 9 passes through the mounting seat 1 and the covering tube 3. The screw rod 9 is threadedly connected to the fixing part 6 installed on the inner surface of the primary telescopic tube 4, and two limit grooves 10 are correspondingly provided on the front and rear sides of the surface of the screw rod 9.

[0029] By adopting the above technical solution, the driving motor 2 provides a rotational force for the screw rod 9, and the screw rod 9 can extend the primary telescopic cylinder 4 by using the fixing member 6 below.

[0030] Furthermore, protrusions 8 are fixedly provided on the front and rear sides of the inner surface of the sleeve 7 , and the protrusions 8 are slidably provided inside the limiting grooves 10 .

[0031] By adopting the above technical solution, the protrusion 8 is slidably embedded in the limiting groove 10, so that the rotational force of the screw rod 9 can be synchronously transmitted to the sleeve 7 without hindering the sleeve 7 from moving up and down following the primary telescopic cylinder 4.

[0032] Furthermore, slide grooves 11 are provided on both sides of the inner surfaces of the covering tube 3 , the primary telescopic tube 4 and the secondary telescopic tube 5 , and a slider 12 is slidably provided inside the slide groove 11 , and the slider 12 is fixedly connected to the primary telescopic tube 4 and the secondary telescopic tube 5 .

[0033] By adopting the above technical solution, the slide groove 11 limits the slide block 12, thereby limiting the primary telescopic cylinder 4 and the secondary telescopic cylinder 5, preventing the primary telescopic cylinder 4 and the secondary telescopic cylinder 5 from rotating with the screw rod 9 and the sleeve 7.

[0034] Working principle: When using the telescopic device which is easy to maintain, firstly, the driving motor 2 is used to drive the screw rod 9 to rotate, and the sleeve 7 is driven by the limiting transmission between the protrusion 8 and the limiting groove 10 to make the sleeve 7 rotate synchronously, and the screw rod 9 is pushed by the thread of the lower fixing part 6. At the same time, the sleeve 7 will also follow the upward adjustment of the primary telescopic tube 4 and push with the thread of the upper fixing part 6. The slide groove 11 limits the slider 12, thereby limiting the primary telescopic tube 4 and the secondary telescopic tube 5 to prevent the primary telescopic tube 4 and the secondary telescopic tube 5 from rotating with the screw rod 9 and the sleeve 7, so that the primary telescopic tube 4 and the secondary telescopic tube 5 can move up and down stably to perform multi-stage telescopic, and according to the telescopic length requirements, the same nested structure of the sleeve 7 and the fixing part 6 can be nested again inside the secondary telescopic tube 5 to superimpose the telescopic length, and this is the working principle of the telescopic device which is easy to maintain.

Claims

1. A telescopic device that is easy to maintain, comprising a mounting seat (1), characterized in that: A driving motor (2) is fixedly arranged below the surface of the mounting seat (1), a covering cylinder (3) is arranged above the surface of the mounting seat (1), a primary telescopic cylinder (4) is sleeved inside the covering cylinder (3), a secondary telescopic cylinder (5) is sleeved inside the primary telescopic cylinder (4), and a fixing piece (6) is fixedly arranged and penetrated through the middle of the bottom end of the inner surface of the primary telescopic cylinder (4) and the secondary telescopic cylinder (5).

2. A telescopic device easy to maintain according to claim 1, characterized in that: The shape of the fixing member (6) is set to be a "T" shape, and the inner surface of the fixing member (6) is provided with a thread pattern.

3. The telescopic device easy to maintain according to claim 1, characterized in that: A sleeve (7) is rotatably connected to the surface of a fixing piece (6) mounted on the inner surface of the primary telescopic cylinder (4) via a bearing, and a sleeve (7) is threadedly connected to the fixing piece (6) on the inner surface of the secondary telescopic cylinder (5) at the outer surface of the sleeve (7).

4. The telescopic device for easy maintenance according to claim 1, characterized in that: A screw rod (9) is provided at the upper end of the driving motor (2), and the upper end of the screw rod (9) passes through the mounting seat (1) and the covering cylinder (3).

5. The telescopic device for easy maintenance according to claim 4, characterized in that: The screw rod (9) is threadedly connected to a fixing member (6) installed on the inner surface of the primary telescopic cylinder (4), and two limiting grooves (10) are correspondingly provided on the front and rear sides of the surface of the screw rod (9).

6. The telescopic device for easy maintenance according to claim 3, characterized in that: The inner surface of the sleeve (7) is fixedly provided with protrusions (8) on the front and rear sides thereof, and the protrusions (8) are slidably arranged inside the limiting groove (10).

7. The telescopic device for easy maintenance according to claim 1, characterized in that: The inner surfaces of the covering tube (3), the primary telescopic tube (4) and the secondary telescopic tube (5) are provided with slide grooves (11) on both sides thereof, and a sliding block (12) is slidably arranged inside the slide groove (11), and the sliding block (12) is fixedly connected to the primary telescopic tube (4) and the secondary telescopic tube (5).

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