Transmission hollow shaft

Abstract

The utility model relates to the technical field of hollow shafts, in particular to a transmission hollow shaft which comprises a fixing block, an installation assembly and a telescopic assembly, the installation assembly comprises a connecting block, the connecting block is fixedly arranged on the upper surface of the fixing block, an extrusion rod is arranged on the inner side of the connecting block in a sliding mode, and a threaded rod is fixedly arranged on the lower surface of the extrusion rod. The first bolt is inserted into the fixing block and the hollow shaft body in a threaded mode, the threaded rod is inserted into the round rod in a threaded mode, the position between the fixing block and the hollow shaft body is controlled, the fixing block and the hollow shaft body can be fixed, and the fixing block and the hollow shaft body can be fixed. And a second bolt is inserted into the inner side of the control hole in a threaded mode, so that one end of the second bolt moves to the inner side of the limiting hole, the position between the hollow shaft body and the inner hollow shaft is fixed, and the length of the hollow shaft is conveniently adjusted according to the requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to hollow shaft technical field, concretely is a kind of transmission hollow shaft. BACKGROUND

[0002] Hollow shaft refers to the center of shaft body is made with a through hole, and inner key groove is opened in through hole, and stepped cylinder is processed on the outer surface of shaft body, and outer key groove is opened.

[0003] In prior art, such as patent application number "CN201721275551.4" proposes a kind of hollow mechanical transmission shaft, including a thick-walled hollow pipe, the thick-walled hollow pipe is provided with solid shaft head for plugging thick-walled hollow pipe and for installing bearing or installing shaft coupling at both ends;The thick-walled hollow pipe and solid shaft head are fixedly connected by a plurality of dowel pins.

[0004] But the above-mentioned patent, there are some problems in use, when needing to disassemble maintenance and replace output shaft, operation process is relatively time-consuming and laborious, it is not convenient to install and disassemble hollow shaft according to demand, the length of hollow shaft is fixed, hollow shaft needs to be cut by cutting equipment when too long, hollow shaft needs to be welded by welding equipment when too short, it is not convenient to adjust the length of hollow shaft according to demand. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of transmission hollow shaft, to solve the problems raised in the above background.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A kind of transmission hollow shaft, including fixed block, installation component and telescopic component, the installation component includes connecting block, connecting block is fixedly arranged on the upper surface of fixed block, and the inner side of connecting block is slidably provided with extrusion rod.

[0008] The lower surface of the extrusion rod is fixedly provided with threaded rod, the outer surface of connecting block is fixedly provided with two pairs of support blocks, the outer surface of connecting block is slidably provided with clamping block, clamping block is arranged on the upper surface of support block, the middle part of fixed block is slidably provided with round rod, and threaded rod is threadedly arranged in the inside of round rod.

[0009] Preferably, the lower end of the round rod is fixedly provided with a cylindrical hollow shaft body, and the fixed block is slidably arranged on the upper surface of the hollow shaft body.

[0010] Preferably, the upper surface of the fixed block is provided with two positioning holes, and the inside of the two positioning holes is threadedly provided with a first bolt, and the lower end of the two first bolts is threadedly arranged in the inside of the hollow shaft body.

[0011] Preferably, the telescopic component includes an inner hollow shaft, which is slidably disposed inside the hollow shaft body, and an end cap is fixedly disposed at the lower end of the inner hollow shaft, which is disposed below the hollow shaft body.

[0012] Preferably, a circular control hole is provided on the outer surface of the hollow shaft body, and a second bolt is provided with the internal thread of the control hole.

[0013] Preferably, the outer surface of the hollow shaft is provided with a plurality of limiting holes evenly distributed, and one end of the second bolt is slidably disposed inside the limiting holes.

[0014] The beneficial effects of this utility model are:

[0015] This utility model, because the installation components include connecting blocks and pressing rods, etc., uses a first bolt threaded into the interior of the fixing block and the hollow shaft body, and a threaded rod threaded into the interior of the round rod to control the position between the fixing block and the hollow shaft body, making it easy to install and disassemble the hollow shaft as needed. Because the telescopic component includes an inner hollow shaft and an end cap, a second bolt threaded into the inside of the control hole causes one end of the second bolt to move to the inside of the limiting hole, fixing the position between the hollow shaft body and the inner hollow shaft, making it easy to adjust the length of the hollow shaft as needed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the fixing block and connecting block of this utility model;

[0019] Figure 3 This is a schematic diagram of the hollow shaft body and the first bolt structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the second bolt and the limiting hole structure of this utility model.

[0021] The attached figures are labeled as follows:

[0022] 1. Fixing block; 2. Connecting block; 3. Extrusion rod; 4. Threaded rod; 5. Support block; 6. Clamping block; 7. Round rod; 8. Hollow shaft body; 9. Positioning hole; 10. First bolt; 11. Inner hollow shaft; 12. End cap; 13. Control hole; 14. Second bolt; 15. Limiting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] A hollow transmission shaft includes a fixed block 1, a mounting assembly, and a telescopic assembly. The mounting assembly includes a connecting block 2, which is fixedly disposed on the upper surface of the fixed block 1. A pressing rod 3 is slidably disposed on the inner side of the connecting block 2.

[0025] A threaded rod 4 is fixedly installed on the lower surface of the extrusion rod 3. Two pairs of support blocks 5 are fixedly installed on the outer surface of the connecting block 2. A locking block 6 is slidably installed on the outer surface of the connecting block 2. The locking block 6 is installed on the upper surface of the support block 5. A round rod 7 is slidably installed in the middle of the fixing block 1. The threaded rod 4 is threaded inside the round rod 7.

[0026] like Figure 1 , Figure 2 and Figure 3 Fix the connecting block 2 on the upper surface of the fixing block 1, slide the extrusion rod 3 into the inside of the connecting block 2, insert the round rod 7 into the inside of the fixing block 1, and thread the threaded rod 4 into the inside of the round rod 7.

[0027] A cylindrical hollow shaft body 8 is fixedly installed at the lower end of the round rod 7, and a fixing block 1 is slidably installed on the upper surface of the hollow shaft body 8.

[0028] like Figure 2 and Figure 3 The hollow shaft body 8 is fixed to the lower surface of the fixing block 1 by the round rod 7.

[0029] Two positioning holes 9 are provided on the upper surface of the fixing block 1. The two positioning holes 9 are threaded with first bolts 10, and the lower ends of the two first bolts 10 are threaded inside the hollow shaft body 8.

[0030] like Figure 2 and Figure 3 The two first bolts 10 are threaded into the interior of the two positioning holes 9 and the interior of the hollow shaft body 8, respectively.

[0031] The telescopic assembly includes an inner hollow shaft 11, which is slidably disposed inside the hollow shaft body 8. An end cap 12 is fixedly disposed at the lower end of the inner hollow shaft 11, and the end cap 12 is disposed below the hollow shaft body 8.

[0032] like Figure 3 andFigure 4 The hollow shaft 11 is slidably disposed inside the hollow shaft body 8, and the end cap 12 is fixed to the lower end of the hollow shaft 11.

[0033] A circular control hole 13 is provided on the outer surface of the hollow shaft body 8, and a second bolt 14 is provided in the internal thread of the control hole 13.

[0034] like Figure 3 and Figure 4 The second bolt 14 is threaded into the control hole 13, so that one end of the second bolt 14 is located inside the hollow shaft body 8.

[0035] The outer surface of the hollow shaft 11 is evenly provided with several limiting holes 15, and one end of the second bolt 14 is slidably disposed inside the limiting hole 15.

[0036] Slide one end of the second bolt 14 into the inside of the limiting hole 15 to fix the position between the hollow shaft body 8 and the inner hollow shaft 11.

[0037] The working principle of the hollow transmission shaft provided by this utility model is as follows:

[0038] The fixing block 1 is fixed to the upper surface of the hollow shaft body 8 by the first bolt 10, the locking block 6 is slidably set on the upper surface of the support block 5, the pressing rod 3 is rotated so that the threaded rod 4 is threaded into the inside of the round rod 7, and the second bolt 14 is rotated inside the control hole 13 to move one end of the second bolt 14 to the inside of the limiting hole 15. The position between the hollow shaft body 8 and the inner hollow shaft 11 is adjusted as needed.

[0039] Compared with related technologies, the hollow transmission shaft provided by this utility model has the following beneficial effects:

[0040] Since the installation components of this utility model include a connecting block 2 and a pressing rod 3, the first bolt 10 is threaded into the interior of the fixing block 1 and the hollow shaft body 8, and the threaded rod 4 is threaded into the interior of the round rod 7, the position between the fixing block 1 and the hollow shaft body 8 is controlled, which facilitates the installation and disassembly of the hollow shaft according to the requirements.

[0041] Since the telescopic assembly includes an inner hollow shaft 11 and an end cap 12, the second bolt 14 is threaded into the inside of the control hole 13, so that one end of the second bolt 14 moves to the inside of the limiting hole 15, fixing the position between the hollow shaft body 8 and the inner hollow shaft 11, so that the length of the hollow shaft can be adjusted as needed.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hollow transmission shaft, comprising a fixed block (1), a mounting assembly, and a telescopic assembly, characterized in that, The installation assembly includes a connecting block (2), which is fixedly disposed on the upper surface of the fixing block (1), and a pressing rod (3) is slidably disposed on the inner side of the connecting block (2); The lower surface of the extrusion rod (3) is fixedly provided with a threaded rod (4), the outer surface of the connecting block (2) is fixedly provided with two pairs of support blocks (5), the outer surface of the connecting block (2) is slidably provided with a locking block (6), the locking block (6) is provided on the upper surface of the support block (5), the middle part of the fixing block (1) is slidably provided with a round rod (7), and the threaded rod (4) is threaded inside the round rod (7).

2. A hollow transmission shaft according to claim 1, characterized in that, The lower end of the round rod (7) is fixedly provided with a cylindrical hollow shaft body (8), and the fixing block (1) is slidably provided on the upper surface of the hollow shaft body (8).

3. A hollow transmission shaft according to claim 2, characterized in that, The upper surface of the fixing block (1) has two positioning holes (9), and the interior of the two positioning holes (9) is threaded with first bolts (10), and the lower ends of the two first bolts (10) are threaded inside the hollow shaft body (8).

4. A hollow transmission shaft according to claim 3, characterized in that, The telescopic assembly includes an inner hollow shaft (11), which is slidably disposed inside the hollow shaft body (8). An end cap (12) is fixedly disposed at the lower end of the inner hollow shaft (11), and the end cap (12) is disposed below the hollow shaft body (8).

5. A hollow transmission shaft according to claim 4, characterized in that, The hollow shaft body (8) has a circular control hole (13) on its outer surface, and a second bolt (14) is threaded inside the control hole (13).

6. A hollow transmission shaft according to claim 5, characterized in that, The outer surface of the hollow shaft (11) is uniformly provided with several limiting holes (15), and one end of the second bolt (14) is slidably disposed inside the limiting hole (15).

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