Transmission mandrel with multi-step-shaped end

Abstract

The transmission mandrel comprises a transmission mandrel body, a cylindrical hollow sleeve is sleeved at the outer end of the transmission mandrel body, stepped spline protrusions are fixedly connected with the ends, close to each other, of the transmission mandrel body, the ends, close to each other, of the cylindrical hollow sleeve, and an outer sleeve is fixedly connected with the outer end of the cylindrical hollow sleeve. A pair of clamping inclined grooves are symmetrically formed in the upper end of the outer sleeve, clamping inclined columns are clamped to the inner ends of the clamping inclined grooves, and an oil storage auxiliary box is fixedly connected to the upper ends of the multiple clamping inclined columns. Maintenance oil liquid can overflow into the cylindrical hollow sleeve from the liquid injection hole through the one-way liquid flow valve and circulate to the outer wall face of the connecting position of the transmission mandrel body and the cylindrical hollow sleeve, the cylindrical hollow sleeve and the transmission mandrel body do not need to be integrally disassembled for maintenance, time and labor are saved, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to a transmission spindle with a multi-stepped end portion, belonging to the technical field of automobile parts. Background Art

[0002] The spindle is used to support rotating parts and only bears bending moments but does not transmit torque. Some spindles rotate, such as the axles of railway vehicles, while some spindles do not rotate, such as the axles supporting pulleys. Depending on whether the axle rotates during operation, the spindle can be divided into a rotating spindle and a fixed spindle.

[0003] The Chinese patent number CN205737679U is an energy absorption structure of a lower steering shaft of an automobile, which includes a mandrel and a cylinder with an open end, the mandrel is sleeved in the open end of the cylinder and the two are tightly matched, a through damping hole is opened on the cylinder wall of the closed end of the cylinder, and a rubber sleeve is arranged on the outer sleeve of the cylinder to close the outer port of the damping hole. This solution solves the problem of poor collision energy absorption effect of the lower steering shaft of an automobile in the prior art.

[0004] However, it is not convenient to apply maintenance oil to the transmission spindle body and the stepped spline raised area that contacts each other for maintenance. The transmission spindle body and the cylindrical hollow sleeve need to be disassembled and assembled as a whole, which is time-consuming, labor-intensive and inefficient.

[0005] For this purpose, a transmission spindle with multi-stepped ends is proposed. Utility Model Content

[0006] In view of this, the utility model provides a transmission spindle with a multi-stepped end portion to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the utility model is achieved as follows: a transmission spindle with a multi-stepped end, comprising a transmission spindle body, the outer end of the transmission spindle body is sleeved with a cylindrical hollow sleeve, one end of the transmission spindle body close to the cylindrical hollow sleeve is fixedly connected with a stepped spline protrusion, the stepped spline protrusion is in contact with the inner wall of the cylindrical hollow sleeve, the outer end of the cylindrical hollow sleeve is fixedly connected with an external sleeve, the upper end of the external sleeve is symmetrically provided with a pair of engaging bevel grooves, the inner ends of the engaging bevel grooves are engaged with engaging bevel columns, and the upper ends of the multiple engaging bevel columns are fixedly connected with an oil storage auxiliary box.

[0008] Further preferably, a one-way liquid flow valve is symmetrically fixedly connected to the front and rear sides of the lower end of the oil storage auxiliary box, and a rubber liquid injection head is fixedly connected to the lower end of the one-way liquid flow valve.

[0009] Further preferably, injection holes are symmetrically provided on the front and rear sides of the upper ends of the outer sleeve and the cylindrical hollow sleeve.

[0010] Further preferably, the rubber injection head extends into the injection hole, and the inner end of the oil storage auxiliary box is filled with the main body of the maintenance oil.

[0011] Further preferably, the maintenance oil body passes through the one-way flow valve into the injection hole, and an oil injection hole is opened at the upper end of the oil storage auxiliary box.

[0012] Further preferably, a sealing plug is installed at the inner end of the oil filling hole, and a blocking plug is fixedly connected to the outer side of the end where the one-way liquid flow valve and the rubber liquid filling head are close to each other.

[0013] Further preferably, the enclosure plug is located on the upper side of the injection hole, and the transmission spindle body is installed on the chassis inside the vehicle.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0015] 1. In this scheme, an oil storage auxiliary box is added outside the cylindrical hollow sleeve. The oil storage auxiliary box is filled with a maintenance oil body. The maintenance oil body can overflow from the injection hole into the cylindrical hollow sleeve through a one-way flow valve, and flow to the outer wall surface of the connection between the transmission spindle body and the cylindrical hollow sleeve. It is no longer necessary to disassemble the cylindrical hollow sleeve and the transmission spindle body as a whole for maintenance, which saves time and effort and has high efficiency. When the oil storage auxiliary box is installed outside the cylindrical hollow sleeve, it can be conveniently disassembled and assembled through a plurality of engaging inclined grooves outside the outer sleeve. The oil storage auxiliary box is pushed horizontally onto the outer sleeve, so that the engaging inclined column and the engaging inclined groove can be smoothly engaged, making the oil storage auxiliary box easy to disassemble and more flexible to use.

[0016] 2. At the same time, when the one-way flow valve allows the maintenance oil body to flow into the injection hole, a rubber injection head can be arranged under the one-way flow valve. The rubber injection head can extend the flow path of the one-way flow valve, allowing it to flow deeply into the injection hole, and cooperate with the enclosure plug to seal the outer side of the external sleeve, so as to further ensure the safety of the overflow process of the maintenance oil body.

[0017] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the axial side structure of a cylindrical hollow sleeve of the utility model;

[0020] Figure 2 This is a schematic diagram of the shaft side structure of the transmission spindle body of the utility model;

[0021] Figure 3 It is an enlarged structural diagram of the oil storage auxiliary box of the utility model;

[0022] Figure 4 This is a schematic diagram of the explosion structure of the oil storage auxiliary box of the utility model;

[0023] Figure 5 It is a schematic diagram of the enlarged structure of the one-way liquid flow valve of the utility model.

[0024] Figure numerals: 1. cylindrical hollow sleeve; 2. transmission spindle body; 3. stepped spline protrusion; 4. external sleeve; 5. oil storage auxiliary box; 6. engaging inclined groove; 7. engaging inclined column; 8. oil filling hole; 9. sealing plug; 10. maintenance oil body; 11. one-way flow valve; 12. enclosure plug; 13. rubber injection head; 14. injection hole. DETAILED DESCRIPTION

[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0026] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] like Figure 1-5 As shown, an embodiment of the utility model provides a transmission spindle with a multi-stepped end, including a transmission spindle body 2, the outer end of the transmission spindle body 2 is sleeved with a cylindrical hollow sleeve 1, the end of the transmission spindle body 2 close to the cylindrical hollow sleeve 1 is fixedly connected with a stepped spline protrusion 3, the stepped spline protrusion 3 is in contact with the inner wall of the cylindrical hollow sleeve 1, the outer end of the cylindrical hollow sleeve 1 is fixedly connected with an external sleeve 4, the upper end of the external sleeve 4 is symmetrically provided with a pair of engaging bevel grooves 6, the inner ends of the engaging bevel grooves 6 are engaged with engaging bevel columns 7, and the upper ends of the multiple engaging bevel columns 7 are fixedly connected with an oil storage auxiliary box 5.

[0029] A one-way liquid flow valve 11 is symmetrically fixedly connected to the front and rear sides of the lower end of the oil storage auxiliary box 5, and a rubber liquid injection head 13 is fixedly connected to the lower end of the one-way liquid flow valve 11. Liquid injection holes 14 are symmetrically opened on the front and rear sides of the upper ends of the external sleeve 4 and the cylindrical hollow sleeve 1. The rubber liquid injection head 13 extends into the liquid injection hole 14, and the inner end of the oil storage auxiliary box 5 is filled with a maintenance oil body 10.

[0030] Example 2

[0031] In one embodiment, the maintenance oil body 10 passes through the one-way flow valve 11 into the injection hole 14 , and an oil injection hole 8 is opened at the upper end of the oil storage auxiliary box 5 , and a sealing plug 9 is installed at the inner end of the oil injection hole 8 .

[0032] A blocking plug 12 is fixedly connected to the outer side of one end of the one-way flow valve 11 and the rubber injection head 13 that are close to each other. The blocking plug 12 is located on the upper side of the injection hole 14, and the transmission spindle body 2 is installed on the chassis inside the vehicle.

[0033] When the utility model is working: the transmission spindle body 2 is sleeved in the cylindrical hollow sleeve 1 and installed as a whole in the universal assembly in the chassis of the vehicle, which plays a guiding and connecting role. Therefore, an oil storage auxiliary box 5 is added to the cylindrical hollow sleeve 1, and the oil storage auxiliary box 5 is filled with a maintenance oil body 10. The maintenance oil body 10 can overflow from the injection hole 14 into the cylindrical hollow sleeve 1 through the one-way flow valve 11, and flow to the outer wall surface of the connection between the transmission spindle body 2 and the cylindrical hollow sleeve 1. It is no longer necessary to disassemble the cylindrical hollow sleeve 1 and the transmission spindle body 2 as a whole for maintenance, which saves time, labor and efficiency. The oil storage auxiliary box 5 can be conveniently disassembled and assembled through the multiple engaging bevel grooves 6 outside the external sleeve 4. The engaging bevel column 7 and the engaging bevel groove 6 can be smoothly engaged by pushing the oil storage auxiliary box 5 horizontally onto the external sleeve 4, so that the oil storage auxiliary box 5 is easy to disassemble and the usage is more flexible. At the same time, when the one-way flow valve 11 flows the maintenance oil body 10 into the injection hole 14, a rubber injection head 13 can be further provided under the one-way flow valve 11. The rubber injection head 13 can extend the flow path of the one-way flow valve 11, allowing it to flow deeply into the injection hole 14, and cooperate with the surrounding plug 12 to seal the outer position of the external sleeve 4, so as to further ensure the safety of the overflow process of the maintenance oil body 10.

[0034] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A transmission spindle with multi-stepped ends, characterized in that: The invention comprises a transmission spindle body (2), the outer end of the transmission spindle body (2) is sleeved with a cylindrical hollow sleeve (1), one end of the transmission spindle body (2) close to the cylindrical hollow sleeve (1) is fixedly connected with a stepped spline protrusion (3), the stepped spline protrusion (3) is in contact with the inner wall of the cylindrical hollow sleeve (1), the outer end of the cylindrical hollow sleeve (1) is fixedly connected with an external sleeve (4), the upper end of the external sleeve (4) is symmetrically provided with a pair of engaging inclined grooves (6), the inner ends of the engaging inclined grooves (6) are engaged with engaging inclined columns (7), and the upper ends of a plurality of the engaging inclined columns (7) are fixedly connected with an oil storage auxiliary box (5).

2. A transmission spindle with multi-stepped ends according to claim 1, characterized in that: One-way liquid flow valves (11) are symmetrically and fixedly connected to the front and rear sides of the lower end of the oil storage auxiliary box (5), and a rubber liquid injection head (13) is fixedly connected to the lower end of the one-way liquid flow valve (11).

3. A transmission spindle with multi-stepped ends according to claim 2, characterized in that: Liquid injection holes (14) are symmetrically provided on the front and rear sides of the upper ends of the outer sleeve (4) and the cylindrical hollow sleeve (1).

4. A transmission spindle with multi-stepped ends according to claim 3, characterized in that: The rubber injection head (13) extends into the injection hole (14), and the inner end of the auxiliary oil storage box (5) is filled with a maintenance oil body (10).

5. The transmission spindle with multi-stepped ends according to claim 4, characterized in that: The maintenance oil body (10) passes through a one-way flow valve (11) into a liquid injection hole (14), and an oil injection hole (8) is provided at the upper end of the auxiliary oil storage box (5).

6. A transmission spindle with multi-stepped ends according to claim 5, characterized in that: A sealing plug (9) is installed at the inner end of the oil filling hole (8), and a blocking plug (12) is fixedly connected to the outer side of the end where the one-way liquid flow valve (11) and the rubber liquid filling head (13) are close to each other.

7. A transmission spindle with multi-stepped ends according to claim 6, characterized in that: The enclosure plug (12) is located on the upper side of the injection hole (14), and the transmission spindle body (2) is installed on the chassis inside the vehicle.

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