Strength detection device for meshing sleeve

Abstract

The strength detection device comprises a supporting frame, and a detection groove and an installation groove are formed in the front side and the rear side of the upper end of the supporting frame respectively. A hydraulic telescopic rod is fixedly mounted on the inner side of the front end of the mounting groove in a supporting mode, the telescopic part of the rear end of the hydraulic telescopic rod penetrates through the rear end of the supporting frame to be fixedly provided with a rear connecting frame, main limiting sliding rods are fixedly mounted on the two sides of the rear connecting frame, and a front connecting frame is fixedly mounted at the front ends of the main limiting sliding rods; a pressing head used for detecting the pressing strength of the meshing sleeve is detachably and fixedly installed in the middle of the front end of the front connecting frame, a supporting screw rod is connected to the middle of the front end of the detection groove in a penetrating and threaded mode, and an arc-shaped limiting plate used for limiting the meshing sleeve is detachably and fixedly installed at the rear end of the supporting screw rod. And a driving motor is fixedly mounted at the upper side end of the supporting frame. According to the utility model, the strength of the engagement sleeve is detected, and the deformation degree of the engagement sleeve is conveniently and accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing technology, specifically to a strength testing device for meshing sleeves. Background Technology

[0002] A meshing sleeve is a device in an automotive transmission that enables gears to mesh together. It consists of a pair of synchronizer rings or other similar structures between two gears, and its main purpose is to ensure smooth gear engagement. The specific functions of a meshing sleeve are as follows:

[0003] Smooth Engagement: In automotive transmissions, the engagement sleeve is designed to ensure smoother engagement between two gears. When the driver selects a gear, the engagement sleeve moves to the target gear under the control of the shifting mechanism, ensuring smooth engagement. This process reduces impact and noise during engagement, improving driving comfort. Shift Assistance: Although the engagement sleeve itself does not directly perform shifting, it works in conjunction with components such as synchronizers to assist in shifting. When there is a difference in the speed of two adjacent gears, the engagement sleeve and synchronizer work together to match the gear speeds to the same level, ensuring smooth shifting. Extended Service Life: The design of the engagement sleeve also increases the working surface of the shifting components to withstand impacts, thus extending the service life of the shifting components to some extent. This helps reduce transmission maintenance and replacement costs, improving the overall vehicle economy.

[0004] However, in practical applications, the meshing sleeve, as a key component in the mechanical transmission system, directly affects the stability and durability of the entire transmission system. Traditional strength testing methods often rely on destructive tests, such as tensile and torsion tests. While these methods can obtain the ultimate strength of the material, they cannot precisely control the degree of deformation, making it impossible to compare the deformation stress of all products in the same batch, thus hindering comprehensive quality control. Utility Model Content

[0005] The purpose of this invention is to provide a strength testing device for engagement sleeves, addressing the issue raised in the background section where the strength of the engagement sleeve, a key component in a mechanical transmission system, directly affects the stability and durability of the entire transmission system. Traditional strength testing methods often rely on destructive testing, such as tensile and torsion tests. While these methods can obtain the ultimate strength of materials, they cannot precisely control the degree of deformation, making it impossible to compare the deformation stress of all products in the same batch, thus hindering comprehensive quality control.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a support frame is provided, wherein a detection groove and an installation groove are respectively provided on the front and rear sides of the upper end of the support frame;

[0007] A hydraulic telescopic rod is fixedly installed on the inner side of the front end of the mounting groove. The telescopic part of the rear end of the hydraulic telescopic rod passes through the rear end of the support frame and is fixedly installed on the rear connecting frame. Main limiting slide rods are fixedly installed on both sides of the rear connecting frame. A front connecting frame is fixedly installed at the front end of the main limiting slide rod. A pressing head for pressing the engagement sleeve is detachably fixedly installed at the middle of the front end of the front connecting frame. A support screw is threaded through the middle of the front end of the detection groove. An arc-shaped limiting plate for limiting the engagement sleeve is detachably fixedly installed at the rear end of the support screw.

[0008] A drive motor is fixedly installed on the upper end of the support frame. A transmission screw is fixedly installed on the inner drive shaft of the drive motor. A U-shaped moving frame is threadedly connected to the outer curved surface of the transmission screw. A support slide rod is movably connected through and fitted to the side of the U-shaped moving frame away from the transmission screw. An electric telescopic rod is fixedly installed through the middle of the upper end of the U-shaped moving frame. An installation ring is fixedly installed on the telescopic part of the lower end of the electric telescopic rod. A contact switch is fixedly installed in the middle of the installation ring.

[0009] Preferably, the hydraulic telescopic rod is connected to a hydraulic control cylinder via a hydraulic pipeline.

[0010] Preferably, there are two main limiting slide rods, which are symmetrically distributed on both sides of the rear connecting frame, and the main limiting slide rods are movably connected to both sides of the mounting groove through and fitting together.

[0011] Preferably, a pressure sensor is fixedly installed at the front end of the pressing head.

[0012] Preferably, the outer curved surface of the front end of the support screw is threaded with a locking nut for locking and tightening the support screw, and the front end of the support screw is fixedly installed with a handle for rotating the support screw, and the arc-shaped limiting plate is movably connected to the inner wall of the detection groove.

[0013] Preferably, the transmission lead screw is rotatably connected to the upper end of the support frame via a bearing seat, and the support slide rod is fixedly installed on the upper end of the support frame.

[0014] Preferably, the contact switch is located inside the detection groove where the required detection intensity is to be detected, and the contact switch is electrically connected to the hydraulic telescopic rod control switch via a wire.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] When the pressing head moves forward in a straight line, it pushes the engagement sleeve at the front end of the arc-shaped limiting plate. When the pressing head pushes the engagement sleeve, the pressure value is detected by the pressure sensor fixedly installed at the front end of the pressing head, thereby realizing the strength detection function of the engagement sleeve. At the same time, when the engagement sleeve is pushed and pressed by the pressing head, the rear end of the engagement sleeve will deform and contract under force. When the rear end of the engagement sleeve deforms and contracts under force, the inner side of the engagement sleeve will touch the contact switch. When the contact switch is touched by the inner side of the engagement sleeve, the contact switch will control the closing of the hydraulic telescopic rod. When the engagement sleeve reaches the deformation degree of touching the contact switch, the hydraulic telescopic rod will be closed. This realizes the strength detection of the engagement sleeve and facilitates precise control of the deformation degree of the engagement sleeve, so that the pressure value under the same deformation degree of the engagement sleeve can be compared with the engagement sleeves of the same batch.

[0017] This invention also features a mechanism where, when the drive motor is turned on, it rotates the transmission screw. This rotation, due to the force generated by the threaded connection, causes the U-shaped moving frame to move linearly back and forth along the outer curved surface of the support slide rod. This linear movement of the U-shaped moving frame, in turn, causes the electric telescopic rod to move linearly back and forth. This linear movement of the electric telescopic rod, via the mounting ring, adjusts the position of the contact switch. By controlling the extension and retraction of the electric telescopic rod, the installation ring moves linearly up and down, which in turn adjusts the position of the contact switch. This allows for precise control of the deformation of the engagement sleeve while simultaneously adjusting the contact position of the contact switch through both linear movement back and forth and up and down. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a strength testing device for meshing sleeves according to the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of a strength testing device for meshing sleeves according to the present invention. Figure 2 ;

[0020] Figure 3 This is a partial structural diagram of a strength testing device for meshing sleeves according to the present invention.

[0021] In the diagram: 1. Support frame; 2. Detection slot; 3. Mounting slot; 4. Hydraulic telescopic rod; 5. Rear connecting frame; 6. Main limit slide rod; 7. Front connecting frame; 8. Pressing head; 9. Support screw; 10. Arc-shaped limit plate; 11. Drive motor; 12. Transmission screw; 13. U-shaped moving frame; 14. Support slide rod; 15. Mounting ring; 16. Contact switch; 17. Electric telescopic rod. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This utility model provides a technical solution for a strength testing device for meshing sleeves: it includes a support frame 1, and the front and rear sides of the upper end of the support frame 1 are respectively provided with a testing groove 2 and a mounting groove 3;

[0024] A hydraulic telescopic rod 4 is fixedly installed on the inner side of the front end of the mounting slot 3. The hydraulic telescopic rod 4 is connected to a hydraulic control cylinder through a hydraulic pipe. The telescopic part of the rear end of the hydraulic telescopic rod 4 passes through the support frame 1 and is fixedly installed on the rear end of the support frame 1. There are two main limit slide rods 6 fixedly installed on both sides of the rear connection frame 5, which are symmetrically distributed on both sides of the rear connection frame 5. The main limit slide rods 6 pass through and fit movably connected to both sides of the mounting slot 3. A front connection frame 7 is fixedly installed at the front end of the main limit slide rod 6. A pressing head 8 for pressing the engagement sleeve for pressing strength testing is detachably fixedly installed in the middle of the front end of the front connection frame 7. The front end of the pressing head 8 is... A pressure sensor is fixedly installed so that when the pressing head 8 tests the pressing strength of the engagement sleeve, the pressure value is detected by the pressure sensor. A support screw 9 is threaded through the middle of the front end of the detection groove 2, and a locking nut for locking and fastening the support screw 9 is threaded on the outer curved surface of the front end of the support screw 9. A handle for rotating the support screw 9 is fixedly installed at the front end of the support screw 9. An arc-shaped limiting plate 10 for limiting the engagement sleeve is detachably fixedly installed at the rear end of the support screw 9, and the arc-shaped limiting plate 10 is movably connected to the inner wall of the detection groove 2, so that the arc-shaped limiting plate 10 can be linearly moved and limited by the detection groove 2.

[0025] A drive motor 11 is fixedly installed on the upper end of the support frame 1. A transmission screw 12 is fixedly installed on the inner drive shaft of the drive motor 11. The transmission screw 12 is rotatably connected to the upper end of the support frame 1 through a bearing seat. A U-shaped moving frame 13 is threadedly connected to the outer curved surface of the transmission screw 12. A support slide rod 14 is movably connected through the side of the U-shaped moving frame 13 away from the transmission screw 12. The support slide rod 14 is fixedly installed on the upper end of the support frame 1, so that the U-shaped moving frame 13 can be linearly moved and limited by the support slide rod 14. An electric telescopic rod 17 is fixedly installed through the middle of the upper end of the U-shaped moving frame 13. An installation ring 15 is fixedly installed on the telescopic part of the lower end of the electric telescopic rod 17. A contact switch 16 is fixedly installed in the middle of the installation ring 15. The contact switch 16 is located inside the detection groove 2 where the required strength is to be detected. The contact switch 16 is electrically connected to the control switch of the hydraulic telescopic rod 4 through a wire.

[0026] Working principle: In use, this utility model places the engagement sleeve to be tested in the middle of the testing groove 2. When the engagement sleeve is placed in the middle of the testing groove 2, the arc-shaped limiting plate 10 blocks and supports the engagement sleeve. When the arc-shaped limiting plate 10 blocks and supports the engagement sleeve, the hydraulic telescopic rod 4 is retracted by controlling the opening. When the hydraulic telescopic rod 4 retracts, it will drive the main limiting slide rod 6 to move forward linearly through the rear connecting frame 5. When the main limiting slide rod 6 moves forward linearly, it will drive the front connecting frame 7 to move forward linearly. When the front connecting frame 7 moves forward linearly, it will drive the pressing head 8 to move forward linearly. When the pressing head 8 moves forward linearly, it will push and press the engagement sleeve at the front end of the arc-shaped limiting plate 10. When pressing the engagement sleeve, the pressure value is detected by a pressure sensor fixedly installed at the front end of the pressing head 8, thereby realizing the strength detection of the engagement sleeve. At the same time, when the engagement sleeve is pushed and pressed by the pressing head 8, the rear end of the engagement sleeve will deform and contract under force. When the rear end of the engagement sleeve deforms and contracts under force, the inner side of the engagement sleeve will touch the contact switch 16. When the inner side of the engagement sleeve touches the contact switch 16, the contact switch 16 will control the closing of the hydraulic telescopic rod 4. When the engagement sleeve reaches the deformation degree of touching the contact switch 16, the hydraulic telescopic rod 4 will be closed. This realizes the strength detection of the engagement sleeve and facilitates precise control of the deformation degree of the engagement sleeve, so that the pressure value under the same deformation degree of the engagement sleeve can be compared with the engagement sleeves of the same batch.

[0027] Simultaneously, by controlling the start of the drive motor 11, when the drive motor 11 is turned on, it drives the transmission screw 12 to rotate. When the transmission screw 12 rotates, the force generated by the threaded connection drives the U-shaped moving frame 13 to move linearly back and forth along the outer curved surface of the support slide rod 14. When the U-shaped moving frame 13 moves linearly back and forth, it drives the electric telescopic rod 17 to move linearly back and forth. When the electric telescopic rod 17 moves linearly back and forth, it drives the contact switch 16 to move linearly back and forth to adjust its position through the mounting ring 15. By controlling the start of the electric telescopic rod 17 to extend and retract, when the electric telescopic rod 17 extends and retracts, it drives the mounting ring 15 to move linearly up and down. When the mounting ring 15 moves linearly up and down, it drives the contact switch 16 to move linearly up and down to adjust its position. This allows for precise control of the deformation of the meshing sleeve, while also allowing for linear adjustment of the contact position of the contact switch 16 both back and forth and up and down.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A strength testing device for engagement sleeves, characterized in that: Includes a support frame (1), and the upper end of the support frame (1) is provided with a detection groove (2) and an installation groove (3) on the front and rear sides respectively; A hydraulic telescopic rod (4) is fixedly installed on the inner side of the front end of the mounting groove (3). The telescopic part of the rear end of the hydraulic telescopic rod (4) passes through the rear end of the support frame (1) and is fixedly installed with a rear connecting frame (5). The rear connecting frame (5) is fixedly installed with main limiting slide rods (6) on both sides. The front end of the main limiting slide rod (6) is fixedly installed with a front connecting frame (7). The front middle of the front end of the front connecting frame (7) is detachably fixedly installed with a pressing head (8) for pressing the meshing sleeve to test the pressing strength. The front middle of the detection groove (2) is threadedly connected with a support screw (9). The rear end of the support screw (9) is detachably fixedly installed with an arc-shaped limiting plate (10) for limiting the meshing sleeve. A drive motor (11) is fixedly installed on the upper end of the support frame (1). A transmission screw (12) is fixedly installed on the inner transmission shaft of the drive motor (11). A U-shaped moving frame (13) is connected to the outer curved surface of the transmission screw (12). A support slide rod (14) is connected to the side of the U-shaped moving frame (13) away from the transmission screw (12). An electric telescopic rod (17) is fixedly installed through the middle of the upper end of the U-shaped moving frame (13). An installation ring (15) is fixedly installed on the telescopic part of the lower end of the electric telescopic rod (17). A contact switch (16) is fixedly installed in the middle of the installation ring (15).

2. The strength testing device for engagement sleeves according to claim 1, characterized in that: The hydraulic telescopic rod (4) is connected to a hydraulic control cylinder via a hydraulic pipeline.

3. The strength testing device for engagement sleeves according to claim 2, characterized in that: There are two main limiting slide rods (6), which are symmetrically distributed on both sides of the rear connecting frame (5). The main limiting slide rods (6) are connected to both sides of the mounting groove (3) through and fit together.

4. The strength testing device for engagement sleeves according to claim 3, characterized in that: A pressure sensor is fixedly installed at the front end of the pressing head (8).

5. The strength testing device for engagement sleeves according to claim 4, characterized in that: The front end of the support screw (9) is threaded with a locking nut for locking and fastening the support screw (9). The front end of the support screw (9) is fixedly installed with a throttle for rotating the support screw (9). The arc-shaped limiting plate (10) is movably connected to the inner wall of the detection groove (2).

6. The strength testing device for engagement sleeves according to claim 5, characterized in that: The transmission screw (12) is rotatably connected to the upper end of the support frame (1) through a bearing seat, and the support slide rod (14) is fixedly installed on the upper end of the support frame (1).

7. The strength testing device for engagement sleeves according to claim 6, characterized in that: The contact switch (16) is located inside the detection groove (2) where the required detection intensity is required. The contact switch (16) is electrically connected to the control switch of the hydraulic telescopic rod (4) via a wire.

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