Holding support of central clutch actuating mechanism

Abstract

The utility model relates to a fixing support, and provides a retaining support of a central clutch actuating mechanism in order to solve the problems that a transmission is difficult to install in a whole vehicle due to the fact that the front end face of a bearing of an existing clutch actuating mechanism and a clutch are prone to interference, or the assembling process of an existing installation auxiliary support is complex. The device comprises a first shaft head winding section, a first shaft spline winding section, a handheld section, an upper working pressing section and a lower working pressing section which are connected in sequence, the first shaft head winding section, the first shaft spline winding section, the handheld section, the upper working pressing section and the lower working pressing section are all spring wires. The first shaft head winding section is a bent section and is wound on the first shaft head in the circumferential direction; the working pressing section is wound on the edge position of the shell, one end of the working pressing upper section is located at the front end of the shell, and the working pressing lower section is located at the rear end of the shell; the part, close to the shell, of the upper working pressing section makes contact with the front end of the piston, and the lower working pressing section makes contact with the back plate.

Description

Technical Field

[0001] The utility model relates to a fixing bracket, in particular to a retaining bracket of a central clutch actuator. Background Art

[0002] As the commercial vehicle market continues to develop in the direction of automation, intelligence, and high-end, matching AMT transmissions has become the mainstream choice for commercial vehicles. Currently, most AMT transmissions use pneumatic central clutch actuators to control the separation and engagement of the clutch.

[0003] For the central pneumatic clutch actuator, during the process of installing the transmission on the vehicle, it is necessary to leave enough space between the front bearing end face of the clutch actuator piston and the engine flywheel to install the clutch. Usually after the transmission is off the assembly line, the front bearing of the central clutch actuator will stay in a reasonable working position. However, the clutch control air circuit of the transmission may produce a small amount of gas leakage. After long-distance transportation or long-term storage, the pre-loaded spring of the clutch actuator will push the piston to a position closer to the engine. At this time, when the transmission is assembled to the vehicle, since the transmission clutch control air circuit has formed a closed cavity, the piston of the clutch actuator is difficult to be pushed without disassembling the transmission, resulting in interference between the front end face of the clutch actuator bearing and the clutch, making it difficult to install the transmission into the vehicle.

[0004] Chinese patent CN112145574A discloses a central clutch actuator installation auxiliary bracket and its use method. Its purpose is to solve the problem of low loading efficiency caused by the piston of the central clutch actuator moving to the end closest to the engine after being placed for a long time. When assembling the whole vehicle, the central clutch actuator needs to be disassembled and assembled. The bracket is bent from spring steel wire and includes an integrally arranged central clutch actuator piston support assembly, a retaining spring support assembly, a disassembly assembly and a fastening assembly; after the central clutch actuator is installed on the transmission input shaft, the central clutch actuator piston is pressed down, and then the central clutch actuator installation auxiliary bracket is installed between the piston and the retaining spring of the central clutch actuator, which can prevent the piston from moving to the end closest to the engine. However, the disadvantage of this prior art is that the assembly process is complicated. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the front end surface of the bearing of the existing clutch actuator is easy to interfere with the clutch, thereby making the transmission difficult to install in the whole vehicle, or the problem that the assembly process of the existing auxiliary mounting bracket is complicated, and to provide a retaining bracket for a central clutch actuator.

[0006] To achieve the above purpose, the technical solution provided by the utility model is:

[0007] A retaining bracket of a central clutch actuator is arranged on a clutch actuator assembly, the clutch actuator assembly comprises a central clutch actuator and a transmission shaft passing through the central clutch actuator; a shaft head is arranged at the front end of the transmission shaft, and a shaft spline is provided in the middle; the central clutch actuator is annular, comprising a housing, a front bearing and a piston arranged in the housing, a back plate arranged at the rear end of the housing, and a sleeve axially arranged in the center of the housing and sleeved on the outside of the transmission shaft; the back plate is fixedly connected to the housing and the sleeve, and the front bearing and the piston cooperate with each other and can move axially; the special features thereof are:

[0008] It comprises a shaft head winding section, a shaft spline winding section, a hand-held section, a working pressing upper section and a working pressing lower section which are connected in sequence; the shaft head winding section, the shaft spline winding section, the hand-held section, the working pressing upper section and the working pressing lower section are all spring wires;

[0009] The shaft head winding section is a bent section, which is circumferentially wound on the shaft head; the shaft spline winding section constitutes a first U-shaped section, whose bottom end and one end connected to the shaft head winding section are both straight sections, and its bottom end is axially arranged along the outer side of the shaft spline, and the other end is a bent section, which is circumferentially wound on the shaft spline; the hand-held section constitutes a second U-shaped section, and the second U-shaped section is located at the front end of the shell; the working clamping upper section and the working clamping lower section constitute a third U-shaped section, and the third U-shaped section is wound at the edge of the shell, one end of the third U-shaped section is located at the front end of the shell, and its bottom end is axially arranged along the outer side of the shell, and the other end is located at the rear end of the shell; the part of the working clamping upper section close to the shell contacts the front end of the piston to prevent the axial movement of the piston; the working clamping lower section contacts the back plate.

[0010] Furthermore, the connection parts among the shaft head winding section, the shaft spline winding section, the hand-held section, the working pressing upper section and the working pressing lower section adopt rounded corner transition.

[0011] Furthermore, the shaft head winding section and the hand-held section are both painted with yellow paint.

[0012] Furthermore, the spring wire is a steel wire.

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

[0014] 1. The central clutch actuator retaining bracket provided by the utility model is fixed by means of a transmission shaft, a back plate and a piston of the central clutch actuator, and other parts do not need to be adjusted; the retaining bracket has simple installation and removal steps, and is stable and reliable during the transportation of the transmission;

[0015] 2. The retaining bracket of the central clutch actuator provided by the utility model is provided with a hand-held section to facilitate the installation and removal of the retaining bracket; at the same time, the hand-held section and a shaft head winding section of the retaining bracket are painted with yellow paint to serve as a warning to avoid forgetting to remove the retaining bracket before the vehicle assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic 3D assembly diagram of a retaining bracket embodiment of the central clutch actuator of the utility model;

[0017] Figure 2 It is a structural schematic diagram of an embodiment of a retaining bracket of a central clutch actuator of the utility model;

[0018] Figure 3 It is a schematic side view of the assembly of the retaining bracket embodiment of the central clutch actuator of the utility model;

[0019] Figure 4 It is an assembly cross-sectional view of an embodiment of a retaining bracket of a central clutch actuator of the utility model;

[0020] Description of reference numerals:

[0021] 1-clutch actuator retaining bracket, 101-a shaft head winding section, 102-a shaft spline winding section, 103-hand-held section, 104-working clamping upper section, 105-working clamping lower section; 2-central clutch actuator, 201-front bearing, 202-piston, 203-housing, 204-back plate, 205-sleeve; 3-a transmission shaft, 301-a shaft head, 302-a shaft spline. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] A retaining bracket for a central clutch actuator, see Figure 1 to Figure 4 , arranged on the clutch actuator assembly, the clutch actuator assembly includes a central clutch actuator 2 and a transmission shaft 3 passing through the central clutch actuator 2; the front end of the transmission shaft 3 is provided with a shaft head 301, and the middle part thereof has a shaft spline 302; the central clutch actuator 2 is annular, including a housing 203, a front bearing 201 and a piston 202 arranged in the housing 203, a back plate 204 arranged at the rear end of the housing 203, and a sleeve 205 axially arranged at the center of the housing 203 and sleeved on the outside of the transmission shaft 3; the back plate 204 is fixedly connected to the housing 203 and the sleeve 205, and the front bearing 201 and the piston 202 cooperate with each other and can move axially;

[0024] It includes a shaft head winding section 101, a shaft spline winding section 102, a hand-held section 103, a working pressing upper section 104 and a working pressing lower section 105 which are connected in sequence; the shaft head winding section 101, the shaft spline winding section 102, the hand-held section 103, the working pressing upper section 104 and the working pressing lower section 105 are all spring wires;

[0025] The shaft head winding section 101 is a bent section, which is circumferentially wound on the shaft head 301; the shaft spline winding section 102 constitutes a first U-shaped section, the bottom end and the end connected to the shaft head winding section 101 are both straight sections, and the bottom end is axially arranged along the outer side of the shaft spline 302, and the other end is a bent section, which is circumferentially wound on the shaft spline 302; the handheld section 103 constitutes a second U-shaped section, and the second U-shaped section is located at the front end of the shell 203; the working pressing upper section 10 4 and the working pressing lower section 105 constitute a third U-shaped section, the third U-shaped section is wound around the edge of the shell 203, one end of the third U-shaped section is located at the front end of the shell 203, the bottom end of the third U-shaped section is axially arranged along the outer side of the shell 203, and the other end is located at the rear end of the shell 203; the part of the working pressing upper section 104 close to the shell 203 is in contact with the front end of the piston 202, so as to prevent the axial movement of the piston 202; the working pressing lower section 105 is in contact with the back plate 204.

[0026] In order to facilitate processing and avoid damage to the clutch actuator assembly by the retaining bracket, the connection parts between a shaft head winding section 101, a shaft spline winding section 102, a hand-held section 103, a working clamping upper section 104 and a working clamping lower section 105 adopt rounded transition.

[0027] In particular, in order to serve as a warning and avoid forgetting to disassemble the retaining bracket before the vehicle assembly process, the shaft head winding section 101 and the hand-held section 103 are both painted with yellow paint.

[0028] The method for using the retaining bracket of the central clutch actuator comprises the following steps:

[0029] Step 1, prepare the assembled clutch actuator holding bracket 1 and the transmission, wherein the clutch actuator assembly is a part of the transmission, and then open the exhaust gas path of the clutch actuator 2 through the solenoid valve in the transmission controller;

[0030] Step 2, press the piston 202 to make it in a preset position for easy installation, then close the solenoid valve, hold the holding section 103 of the holding bracket 1 of the clutch actuator, and wind its shaft head winding section 101 around the shaft head 301, and wind the shaft spline winding section 102 around the shaft spline 302, so that the working pressing upper section 104 and the working pressing lower section 105 clamp the piston 202 and the back plate 204 of the central clutch actuator 2, and complete the fixing of the front bearing 201 and the piston 202;

[0031] Step 3: transport the fixed clutch actuator assembly along with the transmission to a preset position;

[0032] Step 4. When the transmission needs to be assembled to the vehicle, hold the holding section 103 of the clutch actuator retaining bracket 1 and rotate it about 5° along the axial direction of the transmission shaft 3 to release its working clamping upper section 104 and working clamping lower section 105; then release its shaft head winding section 101 and spline winding section 102 to complete the disassembly of the clutch actuator retaining frame 1.

[0033] For a period of time after step 4, the piston 202 of the central clutch actuator 2 can be maintained in a reasonable working position, and the subsequent work of installing the transmission to the vehicle can be completed smoothly.

Claims

1. A retaining bracket of a central clutch actuator, arranged on a clutch actuator assembly, the clutch actuator assembly comprising a central clutch actuator (2) and a transmission shaft (3) passing through the central clutch actuator (2); a shaft head (301) is arranged at the front end of the transmission shaft (3), and a shaft spline (302) is provided in the middle thereof; the central clutch actuator (2) is annular, comprising a housing (203), a front bearing (201) and a piston (202) arranged in the housing (203), a back plate (204) arranged at the rear end of the housing (203), and a sleeve (205) axially arranged at the center of the housing (203) and sleeved on the outside of the transmission shaft (3); the back plate (204) is fixedly connected to the housing (203) and the sleeve (205), and the front bearing (201) and the piston (202) cooperate with each other and can move axially; characterized in that: The invention comprises a shaft head winding section (101), a shaft spline winding section (102), a hand-held section (103), a working pressing upper section (104) and a working pressing lower section (105) which are connected in sequence; the shaft head winding section (101), the shaft spline winding section (102), the hand-held section (103), the working pressing upper section (104) and the working pressing lower section (105) are all spring wires; The shaft head winding section (101) is a bent section, which is circumferentially wound around the shaft head (301); the shaft spline winding section (102) constitutes a first U-shaped section, the bottom end and one end connected to the shaft head winding section (101) are both straight sections, and the bottom end is axially arranged along the outer side of the shaft spline (302), and the other end is a bent section, which is circumferentially wound around the shaft spline (302); the hand-held section (103) constitutes a second U-shaped section, and the second U-shaped section is located at the front end of the housing (203); the working pressing upper section (104) and The working clamping lower section (105) constitutes a third U-shaped section, which is wound around the edge of the shell (203), one end of the third U-shaped section is located at the front end of the shell (203), the bottom end is axially arranged along the outer side of the shell (203), and the other end is located at the rear end of the shell (203); the part of the working clamping upper section (104) close to the shell (203) contacts the front end of the piston (202) to prevent the axial movement of the piston (202); the working clamping lower section (105) contacts the back plate (204).

2. The retaining bracket of the central clutch actuator according to claim 1, characterized in that: The connection parts among the shaft head winding section (101), the shaft spline winding section (102), the hand-held section (103), the working pressing upper section (104) and the working pressing lower section (105) adopt rounded corner transition.

3. The holding bracket of the central clutch actuator according to claim 1 or 2, characterized in that: The shaft head winding section (101) and the hand-held section (103) are both painted with yellow paint.

4. The retaining bracket of the central clutch actuator according to claim 3, characterized in that: The spring wire is a steel wire.

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