Modularized hydraulic motor output shaft assembly

Abstract

The utility model discloses a modularized hydraulic motor output shaft assembly, which comprises a shaft body capable of being telescopically adjusted, the shaft body comprises a main shaft, an auxiliary shaft and a first prism, the auxiliary shaft is coaxially fixed with the first prism, the first prism is inserted in the main shaft in a sliding manner, the first prism is longer than the main shaft, the auxiliary shaft is annularly provided with a plurality of semi-through key grooves, and the semi-through key grooves are communicated with the main shaft. A key block assembly is detachably installed on the auxiliary shaft, the key block assembly is in interference fit with the auxiliary shaft, the key block assembly comprises a fixed key and a plurality of positioning keys, the fixed key and the positioning keys are annularly distributed and fixedly connected, switching use of a single-key-groove gear or a multi-key-groove gear is achieved, and meanwhile in the single-key-groove state, the key block assembly is in interference fit with the auxiliary shaft. And the torque acting force of the fixing key can be dispersed, so that deformation of the fixing key is avoided.

Description

Technical Field

[0001] The utility model relates to a modular hydraulic motor output shaft assembly. Background Art

[0002] The output shaft of the modular hydraulic motor is one of the key components of the hydraulic motor. It undertakes the important function of converting hydraulic energy into mechanical energy and outputting torque and speed. The modular hydraulic motor is a hydraulic component designed for workpieces or equipment travel drives with compact structure size and large output torque. At present, there are two types of output shafts, one is a single keyway structure, and the other is a multiple keyway structure. The single keyway structure can only cooperate with the gear of the single keyway, and cannot be assembled with the gear of the multiple keyways; at the same time, when the output shaft of the single keyway rotates, the torque generated is transmitted to the single keyway through the key, which causes the single keyway and the key to bear a large torque. Therefore, in long-term operation, it will cause the problem of deformation of the key and the keyway, and then cause the disassembly and assembly of the keyway and the key. In view of this, the utility model proposes a bidirectional antenna for subway communication to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a bidirectional antenna for subway communication to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A modular hydraulic motor output shaft assembly comprises: a telescopically adjustable shaft body, the shaft body comprising a main shaft, a secondary shaft and a first prism, the secondary shaft is coaxially fixed with the first prism, the first prism is slidably inserted in the main shaft, and the first prism is larger than the main shaft, the secondary shaft is annularly provided with a plurality of half-through key grooves, a key block assembly is detachably mounted on the secondary shaft, the key block assembly is interference fit with the secondary shaft, the key block assembly comprises a fixed key and a plurality of locating keys, the fixed key and the plurality of locating keys are annularly distributed and fixedly connected.

[0006] As an improvement of the above technical solution, the key block assembly also includes a sleeve with an open end, the fixed key and multiple positioning keys are distributed in a ring on the sleeve, and the fixed key, multiple positioning keys and the sleeve are integrally formed.

[0007] As an improvement of the above technical solution, a second prism is coaxially fixed in the sleeve, and a second prism hole matching the second prism is opened at one axial end of the secondary shaft.

[0008] As an improvement of the above technical solution, the main shaft is provided with a first prism hole adapted to the first prism, the main shaft is radially provided with a plurality of second step holes, and the first prism is provided with a plurality of second positioning holes corresponding to the second step holes.

[0009] As an improvement of the above technical solution, an internally threaded tube is threadedly connected to the main shaft, and the internally threaded tube can cover the second step hole.

[0010] As an improvement of the above technical solution, a protective sleeve is coaxially fixed to one end of the main shaft away from the secondary shaft, and the first prism sleeve is arranged in the protective sleeve.

[0011] As an improvement of the above technical solution, the fixing key is provided with a first step hole, and the secondary shaft is provided with a first positioning hole corresponding to the first step hole.

[0012] As an improvement of the above technical solution, the sleeve is interference fit with the secondary shaft, and the sleeve is interference fit with the mounting piece.

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

[0014] Through the telescopic and adjustable shaft body, when the hydraulic motor is fixed, the axial use range of the secondary shaft is increased through the telescopic adjustment of the shaft body. Through the disassembly and assembly adjustment of the key block assembly and the secondary shaft, when the gear with a single keyway is installed, the key block assembly is fixed on the secondary shaft, and the force of the fixed key is dispersed through the sleeve and multiple positioning keys to avoid the distortion caused by the independent force of the fixed key. When the gear with multiple keyways is used, the key block assembly is removed from the secondary shaft to achieve the installation of the multiple keyways, and finally the switching between the single keyway and the multiple keyways of the output shaft is achieved; the second prism is inserted into the second prism hole, so that the torque force is dispersed through the cooperation of the second prism and the second prism hole to avoid the distortion of the fixed key and the positioning key. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall cutaway structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the secondary shaft structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the key block assembly of the utility model;

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the internal structure;

[0020] Figure 6 This is a schematic diagram of the main shaft structure of the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the utility model in which the countershaft and the single keyway gear are installed;

[0022] Figure 8 It is a structural schematic diagram of the installation state of the countershaft and the multi-keyway gear of the utility model.

[0023] In the figure: 1. shaft body; 11. main shaft; 111. first prism hole; 112. second step hole; 12. secondary shaft; 121. half-through keyway; 122. first positioning hole; 123. second prism hole; 13. first prism; 131. second positioning hole; 14. internal threaded tube; 2. key block assembly; 21. sleeve; 22. fixing key; 221. first step hole; 23. positioning key; 24. second prism; 3. protective cover. DETAILED DESCRIPTION

[0024] 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.

[0025] Example:

[0026] like Figure 1-8 As shown, this embodiment proposes a modular hydraulic motor output shaft assembly, including: a telescopically adjustable shaft body 1, the shaft body 1 includes a main shaft 11, a secondary shaft 12 and a first prism 13, the secondary shaft 12 is coaxially fixed with the first prism 13, the first prism 13 is slidably inserted in the main shaft 11, and the first prism 13 is larger than the main shaft 11, the secondary shaft 12 is annularly provided with a plurality of half-through key grooves 121, and a key block assembly 2 is detachably installed on the secondary shaft 12, the key block assembly 2 is interference fit with the secondary shaft 12, the key block assembly 2 includes a fixed key 22 and a plurality of positioning keys 23, the fixed key 22 and the plurality of positioning keys 23 are annularly distributed and fixedly connected.

[0027] In this embodiment, the shaft body 1 is telescopically adjustable, so that when the hydraulic motor is fixed, the axial use range of the secondary shaft 12 is increased by telescopic adjustment of the shaft body 1. At the same time, when the gear with a single keyway is installed on the secondary shaft 12, multiple positioning keys 23 and the fixed key 22 are inserted into the corresponding half-through keyway 121, and then the gear is installed on the secondary shaft 12 by interference fit, and the fixed key 22 is inserted into the keyway of the gear. At this time, when the shaft body 1 rotates, part of the torque force is applied to the fixed key 22, and the fixed key 22 is fixedly connected with the multiple positioning keys 23, and the fixed key 22 disperses part of the torque force to multiple The positioning key 23 is arranged on the positioning key 23, thereby avoiding the problem of deformation of the fixed key 22. For gears with multiple keyways, the key block assembly 2 is removed from the secondary shaft 12, and then the key block is inserted into the half-through keyway 121 and the keyway corresponding to the gear to install the gear with multiple keyways, thereby realizing the switching use of single-keyway or multi-keyway gears. At the same time, the length of the first prism 13 is greater than the length of the main shaft 11. When the secondary shaft 12 is adjusted, the first prism 13 is always inserted into the inside of the main shaft 11 to ensure that when the main shaft 11 rotates, the first prism 13 is completely in contact with the main shaft 11, so as to avoid the problem of distortion of the hollow main shaft 11 under high torque.

[0028] Specifically, the key block assembly 2 further includes a sleeve 21 with an open end, a fixed key 22 and a plurality of positioning keys 23 are annularly distributed on the sleeve 21, and the fixed key 22, the plurality of positioning keys 23 and the sleeve 21 are integrally formed.

[0029] In this embodiment, the sleeve 21 is integrally formed with the fixing key 22 and the positioning key 23, which can greatly improve the strength and durability of the parts, and the torque transmission between the fixing key 22 and the positioning key 23 can be realized through the sleeve 21, so that when the fixing key 22 rotates, the sleeve 21 part on one side of the fixing key 22 is subjected to an extrusion force, and the other side is subjected to a tensile force, and then the torque force is dispersed through multiple positioning keys 23 fixed on the inner wall of the sleeve 21.

[0030] Specifically, a second prism 24 is coaxially fixed in the sleeve 21 , and a second prism hole 123 adapted to the second prism 24 is formed at one axial end of the secondary shaft 12 .

[0031] In this embodiment, after the sleeve 21 is sleeved on the secondary shaft 12, the second prism 24 is inserted into the second prism hole 123, so that the torque force can be dispersed through the cooperation of the second prism 24 and the second prism hole 123 to avoid distortion of the fixing key 22 and the positioning key 23.

[0032] Specifically, the main shaft 11 defines a first prism hole 111 adapted to the first prism 13 , the main shaft 11 defines a plurality of second step holes 112 radially, and the first prism 13 defines a plurality of second positioning holes 131 corresponding to the second step holes 112 .

[0033] In this embodiment, a countersunk bolt is connected to the inner thread of the second step hole 112, and after the first prism 13 is slidably adjusted, the countersunk bolt is inserted into the second positioning hole 131 to facilitate the fixation of the first prism 13 and the main shaft 11 after adjustment, and to avoid axial movement of the first prism 13.

[0034] Specifically, an internally threaded tube 14 is threadedly connected to the main shaft 11 , and the internally threaded tube 14 can cover the second step hole 112 .

[0035] In this embodiment, the internal threaded tube 14 is rotated to cover the second step hole 112 . At this time, the internal threaded tube 14 can prevent the countersunk bolt in the second step hole 112 from falling off.

[0036] Specifically, a protective sleeve 3 is coaxially fixed to one end of the main shaft 11 away from the secondary shaft 12 , and the first prism 13 is sleeved in the protective sleeve 3 .

[0037] In this embodiment, when the first prism 13 is slidably inserted and adjusted in the main shaft 11, the protective sleeve 3 can prevent the first prism 13 from damaging the wiring harness or other accessories inside the hydraulic motor during pulling.

[0038] Specifically, the fixing key 22 defines a first step hole 221 , and the secondary shaft 12 defines a first positioning hole 122 corresponding to the first step hole 221 .

[0039] In this embodiment, after the fixing key 22 is inserted into the half-through keyway 121, the first step hole 221 corresponds to the first positioning hole 122, and then is threadedly connected to the first step hole 221 through a countersunk bolt and inserted into the first positioning hole 122 to improve the fixing reliability of the key block assembly 2 and the secondary shaft 12.

[0040] Specifically, the sleeve 21 and the secondary shaft 12 are in interference fit, and the sleeve 21 and the mounting member are in interference fit.

[0041] In this embodiment, the sleeve 21 and the secondary shaft 12 are interference fit to improve the fixing reliability of the sleeve 21 and the secondary shaft 12, and the sleeve 21 and the mounting part (the gear is taken as an example in this application) are interference fit to improve the fixing reliability of the sleeve 21 and the gear.

[0042] Working principle: When the position of the countershaft 12 needs to be adjusted, pull the countershaft 12 so that the first prism 13 slides and adjusts in the first prism hole 111, and makes the second positioning hole 131 correspond to the second step hole 112, and the countersunk bolt is threadedly connected to the second step hole 112 and inserted into the second positioning hole 131. For the installation of a single-keyway gear, the sleeve 21 is interference-fitted onto the countershaft 12, and the second prism 24 is inserted into the second prism hole 123, and multiple positioning keys 23 are inserted into the half-through keyway 121, and then the gear is interference-fitted onto the sleeve 21 and the fixed key 22. For the installation of a multi-keyway gear, the sleeve 21 is removed from the countershaft 12, the gear is sleeved on the countershaft 12, and then multiple keys are interference-fitted into the corresponding half-through keyway 121 and the keyway of the gear, thereby completing the switching of gears with different keyways.

[0043] Although embodiments of the present invention 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 invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular hydraulic motor output shaft assembly, characterized in that: include: A telescopically adjustable shaft body (1), the shaft body (1) comprising a main shaft (11), a secondary shaft (12) and a first prism (13), the secondary shaft (12) being coaxially fixed with the first prism (13), the first prism (13) being slidably inserted into the main shaft (11), and the first prism (13) being longer than the main shaft (11), the secondary shaft (12) being provided with a plurality of half-through keyways (121) in an annular shape, a key block assembly (2) being detachably mounted on the secondary shaft (12), the key block assembly (2) being interference fit with the secondary shaft (12), the key block assembly (2) comprising a fixed key (22) and a plurality of positioning keys (23), the fixed key (22) and the plurality of positioning keys (23) being distributed in an annular shape and fixedly connected.

2. A modular hydraulic motor output shaft assembly according to claim 1, characterized in that: The key block assembly (2) further comprises a sleeve (21) having an opening at one end, the fixed key (22) and a plurality of positioning keys (23) being distributed in an annular manner on the sleeve (21), and the fixed key (22), the plurality of positioning keys (23) and the sleeve (21) being integrally formed.

3. A modular hydraulic motor output shaft assembly according to claim 2, characterized in that: A second prism (24) is coaxially fixed in the sleeve (21), and a second prism hole (123) adapted to the second prism (24) is formed at one axial end of the secondary shaft (12).

4. A modular hydraulic motor output shaft assembly according to claim 1, characterized in that: The main shaft (11) is provided with a first prism hole (111) adapted to the first prism (13), the main shaft (11) is radially provided with a plurality of second step holes (112), and the first prism (13) is provided with a plurality of second positioning holes (131) corresponding to the second step holes (112).

5. The modular hydraulic motor output shaft assembly according to claim 1, characterized in that: An internally threaded tube (14) is threadedly connected to the main shaft (11), and the internally threaded tube (14) can cover the second step hole (112).

6. A modular hydraulic motor output shaft assembly according to claim 1, characterized in that: A protective sleeve (3) is coaxially fixed to one end of the main shaft (11) away from the secondary shaft (12), and the first prism (13) is sleeved in the protective sleeve (3).

7. A modular hydraulic motor output shaft assembly according to claim 1, characterized in that: The fixing key (22) is provided with a first step hole (221), and the secondary shaft (12) is provided with a first positioning hole (122) corresponding to the first step hole (221).

8. A modular hydraulic motor output shaft assembly according to claim 2, characterized in that: The sleeve (21) and the secondary shaft (12) are in interference fit, and the sleeve (21) and the mounting piece are in interference fit.

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