CVT transmission shell clamp tensioning mechanism

Abstract

The utility model relates to the technical field of automotive engineering process equipment, in particular to a CVT (continuously variable transmission) shell clamp tensioning mechanism which comprises a base (1). The base (1) is connected with a sleeve structure; a shield (2) is arranged at the end part of the sleeve structure; a driving structure is arranged in the sleeve structure; the driving structure is connected with a positioning pin (3); the shield (2) is arranged on one side of the positioning pin (3); the protective cover is arranged on the face, opposite to aluminum scraps, of the sleeve structure in the butt joint machining process, so that impact of the aluminum scraps can be resisted, meanwhile, the aluminum scraps can be prevented from entering the sleeve structure to block the driving structure, normal work of the tensioning structure can be guaranteed, and the production efficiency is effectively improved. The maintenance frequency can be reduced, and the maintenance cost is reduced; and the driving structure can push the positioning pin to extend out, so that the CVT transmission shell is tensioned and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engineering process equipment, and in particular to a CVT transmission housing clamp tensioning mechanism. Background Art

[0002] During product processing, the tensioning mechanism of the CVT transmission (Continuously Variable Transmission) housing fixture often contains aluminum shavings, causing the tensioning mechanism to fail and get stuck, resulting in equipment alarms or the production of defective parts. Regular disassembly and cleaning (once a month) is required, which affects production efficiency and creates the risk of producing defective products.

[0003] After searching, the applicant found that the Chinese patent document with publication number 212217886U disclosed a fixture for processing a transmission housing on December 25, 2020, including a base plate, and at least two clamping mechanisms and at least two first support columns are provided on the base plate. The upper end surface of the first support column is a plane, and an upward-opening inner cavity is provided in the first support column. The inner cavity is provided with a movable pin and a compression spring. Under the action of the compression spring, the upper end of the movable pin extends above the upper end surface of the first support column. When the transmission housing is placed on the base plate, the housing is supported on the first support column, the pin hole of the housing is aligned with the movable pin, and the upper end of the movable pin extends into the pin hole; this device also cannot solve the above-mentioned technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide a CVT transmission housing clamp tensioning mechanism that can prevent aluminum chips from clogging and jamming, resulting in failure of the tensioning mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide a CVT transmission housing clamp tensioning mechanism which can avoid the clogging and jamming of aluminum chips, thereby causing the tensioning mechanism to fail.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a CVT transmission housing clamp tensioning mechanism, including a base; a sleeve structure is connected to the base; a shield is provided at the end of the sleeve structure; a drive structure is provided in the sleeve structure; the drive structure is connected to a positioning pin; and the shield is provided on one side of the positioning pin.

[0007] The sleeve structure includes a top sleeve and a bottom sleeve; the drive structure and the positioning pin are both arranged in the top sleeve; the shield is arranged at the end of the top sleeve; one end of the bottom sleeve is connected to the top sleeve; and the other end of the bottom sleeve is connected to the base.

[0008] The shield is provided with an extension section; the extension section is arranged along the edge of the shield; a clearance groove is provided at the bottom of the shield; the clearance groove is communicated with the top sleeve.

[0009] The driving structure includes a wedge-shaped slider; an inclined sliding groove is provided on the wedge-shaped slider; and the end of the positioning pin is arranged in the inclined sliding groove.

[0010] A clamping block is provided on the top of the inclined slide; a locking block is provided on one side of the clamping block; a clamping slot is provided on the positioning pin; the clamping block is clamped in the clamping slot, and the locking block is tightly pressed against the positioning pin.

[0011] A pin hole is provided on the side wall of the top sleeve; the positioning pin extends from the pin hole; a fixing rod is provided on the top sleeve; a waist-shaped hole is provided on the side of the wedge-shaped slider; and the end of the fixing rod is arranged in the waist-shaped hole.

[0012] An oil cylinder is provided in the bottom sleeve; the oil cylinder includes a piston rod; and the piston rod is connected to the wedge-shaped sliding block.

[0013] A connecting slot is provided at one end of the wedge-shaped sliding block away from the inclined sliding slot; a connecting block is provided at the end of the piston rod; and the connecting block is clamped in the connecting slot.

[0014] An oil inlet groove and an oil outlet groove are respectively provided in the bottom sleeve; an oil inlet port and an oil outlet are respectively provided in the oil cylinder; the oil inlet port is connected to the oil inlet groove; and the oil outlet port is connected to the oil outlet groove.

[0015] A first bolt hole is provided on the top surface of the shield; a first bolt is provided in the first bolt hole; a first connecting section is provided at the bottom of the top sleeve; a second connecting section is provided at the bottom of the bottom sleeve; a second bolt is provided on the first connecting section; a third bolt is provided on the second connecting section; the second bolt is connected to the top of the bottom sleeve; the third bolt is connected to the base; and sealing rings are connected to the first bolt, the second bolt, and the third bolt.

[0016] The beneficial effects of this application are:

[0017] 1. The tensioning structure of the present application cancels the existing stacked installation structure and changes it to a sleeve-type assembly structure; the tensioning structure of the present application is provided with a top sleeve and a bottom sleeve, which are connected by bolts; at the same time, a protective cover is provided at the top end of the top sleeve; the protective cover is an umbrella-shaped structure, and the diameter of the protective cover is larger than the top end diameter of the top sleeve; the protective cover is provided on the surface of the top sleeve that confronts the aluminum chips during the docking process, thereby being able to withstand the impact of the aluminum chips and at the same time preventing the aluminum chips from entering the top sleeve and blocking the wedge-shaped slider, thereby ensuring the normal operation of the tensioning structure and effectively improving production efficiency; and reducing the maintenance frequency and maintenance costs.

[0018] 2. The bottom sleeve of the present application is provided with an oil cylinder; the top sleeve is provided with a wedge-shaped slider, the oil cylinder pushes the wedge-shaped slider to move upward, and the wedge-shaped slider squeezes the positioning pin toward both sides of the top sleeve, so that the positioning pin fixes the CVT transmission housing for processing; the structure of this tensioning structure is simple, and the tensioning operation is stable and reliable.

[0019] 3. This application increases the sealing of the hedging part of the bolts, and installs sealing rings or sealants on the first bolt, the second bolt and the third bolt, which can effectively prevent aluminum chips from invading the inside of the casing. At the same time, this device reduces the number of installation bolts and the level of installation bolts, which is convenient for later disassembly, installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a structural schematic diagram of the CVT transmission housing clamp tensioning mechanism.

[0022] Figure 2 This is a structural schematic diagram of the sleeve structure of the CVT transmission housing clamp tensioning mechanism.

[0023] Figure 3 This is a cross-sectional view of the tensioning mechanism of the CVT transmission housing clamp.

[0024] Figure 4 This is a schematic diagram of the oil circuit of the oil cylinder of the CVT transmission housing clamp tensioning mechanism.

[0025] Figure 5 This is a schematic diagram of the structure of the drive structure of the CVT transmission housing clamp tensioning mechanism.

[0026] The marks in the above figure are:

[0027] The following are marked in the figure:

[0028] 1. Base,

[0029] 2. Shield, 201. Extension section, 202. Gap groove, 203. First bolt hole,

[0030] 3. Positioning pin, 301, slot,

[0031] 4. Top sleeve, 401. Pin hole, 402. First connecting section, 403. Second bolt,

[0032] 5. Bottom casing, 501. Oil inlet groove, 502. Oil outlet groove, 503. Second connecting section, 504. Third bolt,

[0033] 6. Wedge-shaped slider, 601. Inclined slide, 602. Block, 603. Locking block, 604. Connecting slot,

[0034] 7. Fixed rod, 701, waist-shaped hole,

[0035] 8. Oil cylinder, 801. Piston rod, 802. Connecting block, 803. Oil inlet, 804. Oil outlet. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate its implementation.

[0037] Figure 1 The CVT transmission housing clamp tensioning mechanism shown includes a base 1; a sleeve structure is connected to the base 1; a shield 2 is provided at the end of the sleeve structure; a drive structure is provided in the sleeve structure; the drive structure is connected to a positioning pin 3; and the shield 2 is provided on one side of the positioning pin 3.

[0038] The shield 2 is arranged on the surface that confronts the aluminum chips during the docking process of the sleeve structure, so as to withstand the impact of the aluminum chips, and at the same time prevent the aluminum chips from entering the sleeve structure and blocking the driving structure, thereby ensuring the normal operation of the tensioning structure and effectively improving production efficiency; and can reduce the maintenance frequency and reduce maintenance costs; the driving structure can push the positioning pin 3 to extend, thereby tightening and fixing the CVT transmission housing.

[0039] The sleeve structure includes a top sleeve 4 and a bottom sleeve 5; the drive structure and the positioning pin 3 are both arranged in the top sleeve 4; the shield 2 is arranged at the end of the top sleeve 4; one end of the bottom sleeve 5 is connected to the top sleeve 4; and the other end of the bottom sleeve 5 is connected to the base 1.

[0040] The top sleeve 4 and the bottom sleeve 5 are both hollow circular tube structures; the driving structure is arranged in the top sleeve 4 and can slide in the top sleeve 4; the positioning pins 3 are respectively arranged on both sides of the driving structure; when the driving structure slides, the positioning pins 3 can be squeezed out to both sides, thereby realizing the tensioning and fixing of the CVT transmission housing; the shield 2 is fixedly connected to the end of the top sleeve 4; the bottom sleeve 5 is respectively bolted to the top sleeve 4 and the base 1.

[0041] The shield 2 is provided with an extension section 201 ; the extension section 201 is provided along the edge of the shield 2 ; a clearance groove 202 is provided at the bottom of the shield 2 ; the clearance groove 202 is communicated with the top sleeve 4 .

[0042] The shield 2 is an umbrella-shaped structure; the extension section 201 and the shield 2 are an integral structure; the extension section 201 extends along the edge of the shield 2 toward the outside of the top sleeve 4; the shield 2 is fixedly connected to the end of the top sleeve 4 to seal the end of the top sleeve 4; the shield 2 can withstand aluminum chips during processing, preventing aluminum chips from entering the top sleeve 4 and blocking the wedge-shaped slider 6, thereby ensuring that the device can perform normal tightening operations; the makeshift groove 202 is a circular groove; the makeshift groove 202 is connected to the inside of the top sleeve 4 and can make way for the movement of the wedge-shaped slider 6.

[0043] The driving structure includes a wedge-shaped slider 6 ; an inclined slide groove 601 is provided on the wedge-shaped slider 6 ; and the end of the positioning pin 3 is provided in the inclined slide groove 601 .

[0044] The wedge-shaped slider 6 is a cylindrical structure; an inclined groove 601 is provided on the side surface of one end of the wedge-shaped slider 6 close to the shield 2; inclined grooves 601 are provided on both sides of the wedge-shaped slider 6; the bottom surface of the inclined groove 601 is inclined upward; the end surface of the locating pin 3 is an inclined end surface, and is tightly pressed against the bottom surface of the inclined groove 601; when the wedge-shaped slider 6 slides toward the shield 2 in the top sleeve 4, the bottom surface of the inclined groove 601 squeezes the locating pin 3 toward both sides.

[0045] A clamping block 602 is provided on the top of the inclined slide 601 ; a locking block 603 is provided on one side of the clamping block 602 ; a clamping slot 301 is provided on the positioning pin 3 ; the clamping block 602 is clamped in the clamping slot 301 , and the locking block 603 is pressed against the positioning pin 3 .

[0046] The clamping block 602 and the locking block 603 are both integrated with the wedge-shaped slider 6; clamping blocks 602 are provided on both sides of the top of the inclined slide 601; the clamping block 602 is clamped in the clamping slot 301; thereby, the positioning pin 3 can be limited; the locking block 603 is provided at the end of the inclined slide 601, and when the clamping slot 301 of the positioning pin 3 is clamped on the locking block 603, the positioning pin 3 is locked with the wedge-shaped slider 6, which can effectively prevent the positioning pin 3 from falling off the wedge-shaped slider 6.

[0047] A pin hole 401 is provided on the side wall of the top sleeve 4; the positioning pin 3 extends from the pin hole 401; a fixing rod 7 is provided on the top sleeve 4; a waist-shaped hole 701 is provided on the side of the wedge-shaped slider 6; the end of the fixing rod 7 is provided in the waist-shaped hole 701.

[0048] When the wedge-shaped slider 6 moves horizontally in the top sleeve 4, it can push the positioning pin 3 out and pull it back in the pin hole 401; when the positioning pin 3 extends from the pin hole 401, the end of the positioning pin 3 presses against the CVT transmission housing to achieve tension; when the positioning pin 3 retracts from the pin hole 401, the positioning pin 3 loosens the CVT transmission housing; the fixing rod 7 is fixedly connected to the side wall of the top sleeve 4, and the fixing rod 7 extends into the top sleeve 4 and into the waist-shaped hole 701 to limit the wedge-shaped slider 6.

[0049] An oil cylinder 8 is provided in the bottom sleeve 5 ; the oil cylinder 8 includes a piston rod 801 ; and the piston rod 801 is connected to the wedge-shaped slider 6 .

[0050] The oil cylinder 8 is fixedly connected in the bottom sleeve 5; the oil cylinder 8 can drive the piston rod 801 to perform telescopic operation; the end of the piston rod 801 is fixedly connected to the end of the wedge slider 6, so that the piston rod 801 can drive the wedge slider 6 to perform telescopic movement in the top sleeve 4.

[0051] A connecting slot 604 is provided at one end of the wedge-shaped slider 6 away from the inclined slide slot 601 ; a connecting block 802 is provided at the end of the piston rod 801 ; and the connecting block 802 is engaged in the connecting slot 604 .

[0052] The end of the piston rod 801 is provided with a mounting groove; the end of the connecting block 802 is clamped in the mounting groove; the connecting block 802 is clamped with the connecting groove 604, thereby achieving a fixed connection between the piston rod 801 and the wedge-shaped slider 6.

[0053] The bottom sleeve 5 is provided with an oil inlet groove 501 and an oil outlet groove 502 ; the oil cylinder 8 is provided with an oil inlet port 803 and an oil outlet port 804 ; the oil inlet port 803 is connected to the oil inlet groove 501 ; the oil outlet port 804 is connected to the oil outlet groove 502 .

[0054] The oil inlet groove 501 supplies oil to the oil cylinder 8 from the oil inlet 803 ; the oil outlet groove 502 discharges oil to the oil cylinder 8 from the oil outlet 804 ; this enables oil circulation in the oil cylinder 8 to ensure the normal operation of the oil cylinder 8 .

[0055] A first bolt hole 203 is provided on the top surface of the shield 2; a first bolt is provided in the first bolt hole 203; a first connecting section 402 is provided at the bottom of the top sleeve 4; a second connecting section 503 is provided at the bottom of the bottom sleeve 5; a second bolt 403 is provided on the first connecting section 402; a third bolt 504 is provided on the second connecting section 503; the second bolt 403 is connected to the top of the bottom sleeve 5; the third bolt 504 is connected to the base 1; and sealing rings are connected to the first bolt, the second bolt 403, and the third bolt 504.

[0056] The first connecting section 402 is arranged along the bottom edge of the top sleeve 4 and is an integral structure with the top sleeve 4; the second connecting section 503 is arranged along the bottom edge of the bottom sleeve 5 and is an integral structure with the bottom sleeve 5; at the same time, the present application increases the sealing performance of the counter-bolts, and sealing rings or sealants are installed on the first bolt, the second bolt 403 and the third bolt 504, which can effectively prevent aluminum chips from invading the interior of the sleeve. At the same time, the present device reduces the number of installation bolts and the level of installation bolts, which is convenient for later disassembly, installation and maintenance.

[0057] The specific workflow of this utility model is as follows:

[0058] Install the oil cylinder 8 in the bottom sleeve 5; bolt the bottom sleeve 5 to the base 1; install the wedge slider 6 and the locating pin 3 in the top sleeve 4; connect the wedge slider 6 to the piston rod 801 of the oil cylinder 8; connect the bottom sleeve 5 to the top sleeve 4; install the shield 2 at the end of the top sleeve 4; the oil cylinder 8 drives the piston rod 801 to extend and retract; the piston rod 801 drives the wedge slider 6 to move; the wedge slider 6 squeezes the locating pin 3 to both sides; the locating pin 3 tightens and fixes the CVT transmission housing.

[0059] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A CVT transmission housing clamp tensioning mechanism, characterized by: The invention comprises a base (1); a sleeve structure is connected to the base (1); a shield (2) is provided at the end of the sleeve structure; a driving structure is provided in the sleeve structure; the driving structure is connected to a positioning pin (3); and the shield (2) is provided on one side of the positioning pin (3).

2. A CVT transmission housing clamp tensioning mechanism according to claim 1, characterized in that: The sleeve structure comprises a top sleeve (4) and a bottom sleeve (5); the drive structure and the positioning pin (3) are both arranged in the top sleeve (4); the shield (2) is arranged at the end of the top sleeve (4); one end of the bottom sleeve (5) is connected to the top sleeve (4); and the other end of the bottom sleeve (5) is connected to the base (1).

3. A CVT transmission housing clamp tensioning mechanism according to claim 2, characterized in that: The protective cover (2) is provided with an extension section (201); the extension section (201) is arranged along the edge of the protective cover (2); a clearance groove (202) is provided at the bottom of the protective cover (2); the clearance groove (202) is communicated with the top sleeve (4).

4. A CVT transmission housing clamp tensioning mechanism according to any one of claims 2-3, characterized in that: The driving structure comprises a wedge-shaped slider (6); an inclined sliding groove (601) is provided on the wedge-shaped slider (6); and the end of the positioning pin (3) is arranged in the inclined sliding groove (601).

5. A CVT transmission housing clamp tensioning mechanism according to claim 4, characterized in that: A clamping block (602) is provided at the top of the inclined sliding groove (601); a locking block (603) is provided on one side of the clamping block (602); a clamping groove (301) is provided on the positioning pin (3); the clamping block (602) is clamped in the clamping groove (301), and the locking block (603) is tightly pressed against the positioning pin (3).

6. A CVT transmission housing clamp tensioning mechanism according to claim 5, characterized in that: A pin hole (401) is provided on the side wall of the top sleeve (4); the positioning pin (3) extends from the pin hole (401); a fixing rod (7) is provided on the top sleeve (4); a waist-shaped hole (701) is provided on the side surface of the wedge-shaped slider (6); and the end of the fixing rod (7) is arranged in the waist-shaped hole (701).

7. A CVT transmission housing clamp tensioning mechanism according to any one of claims 5-6, characterized in that: An oil cylinder (8) is provided in the bottom sleeve (5); the oil cylinder (8) includes a piston rod (801); and the piston rod (801) is connected to the wedge-shaped sliding block (6).

8. A CVT transmission housing clamp tensioning mechanism according to claim 7, characterized in that: The end of the wedge-shaped sliding block (6) away from the inclined sliding groove (601) is provided with a connecting card groove (604); the end of the piston rod (801) is provided with a connecting card block (802); the connecting card block (802) is engaged in the connecting card groove (604).

9. A CVT transmission housing clamp tensioning mechanism according to claim 8, characterized in that: An oil inlet groove (501) and an oil outlet groove (502) are respectively provided in the bottom sleeve (5); an oil inlet port (803) and an oil outlet port (804) are respectively provided in the oil cylinder (8); the oil inlet port (803) is connected to the oil inlet groove (501); and the oil outlet port (804) is connected to the oil outlet groove (502).

10. A CVT transmission housing clamp tensioning mechanism according to any one of claims 8 to 9, characterized in that: The top surface of the shield (2) is provided with a first bolt hole (203); a first bolt is provided in the first bolt hole (203); a first connecting section (402) is provided at the bottom of the top sleeve (4); a second connecting section (503) is provided at the bottom of the bottom sleeve (5); a second bolt (403) is provided on the first connecting section (402); a third bolt (504) is provided on the second connecting section (503); the second bolt (403) is connected to the top of the bottom sleeve (5); the third bolt (504) is connected to the base (1); and sealing rings are connected to the first bolt, the second bolt (403), and the third bolt (504).

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