Gear carrier of electric vehicle

Abstract

The utility model belongs to the technical field of gears, and discloses an electric vehicle gear carrier which comprises a top end connecting plate, a connecting ring arranged on the top end connecting plate and used for supporting, a rotating ring rotationally installed on the inner wall of the connecting ring and rotationally limited by the inner wall of the connecting ring, and a connecting gear arranged on one side of the rotating ring. According to the utility model, the lifting screw rod can be mounted on the electric vehicle by using the connecting flange and the bolt, and the positioning bolts on the two sides are rotated and screwed out, so that the connection limitation of the fixed column and the lifting screw rod can be relieved, and then the corresponding adjusting ring is rotated, so that the fixed column can slide on the lifting screw rod; the installation height of the connecting gear can be adjusted conveniently, double limiting is achieved through threaded fit of the lifting screw and the threaded hole and position limitation of the positioning bolt on the fixing column and the lifting screw, the structural stability between the fixing column and the lifting screw can be further improved, and loosening in the using process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gears, in particular to an electric vehicle gear rack. Background Art

[0002] The electric vehicle gear rack is an important component in the electric vehicle transmission system. It is mainly used to support and fix the gears to ensure that the gears can run smoothly and reliably.

[0003] Chinese patent publication number CN217713561U discloses an electric vehicle gear rack, including a fixed connection ring, a top connection plate is arranged on the top of the fixed connection ring, an arc-shaped fixed plate is fixedly connected to the bottom of the top connection plate, the bottom of the arc-shaped fixed plate is fixedly connected to the top of the fixed connection ring, and the tops of both sides of the top connection plate are provided with fixed columns, and the tops of the two fixed columns are provided with lifting columns, and the top outer walls of the two lifting columns are fixedly connected with connecting flanges. The height position of the lifting column is adjusted by the limit bolt in conjunction with the lifting connection groove. When the height position of the lifting column is adjusted, the gear to be installed can be set in the rotating connection hole, and the gear is connected and limited by the rotating connection ring, while the rotation effect of the gear is not limited. During installation, attention should be paid to the connection between the gear and the transmission equipment. After the installation is completed, the height of the lifting column can also be adjusted by the limit bolt, thereby adjusting the installation position of the gear, thereby improving practicality.

[0004] However, in the above-mentioned patent, the height adjustment of the fixed column and the lifting column is fixed by pressing the limit bolt against the outer wall of the lifting column. During the operation of the electric vehicle, it is inevitable that bumps will occur due to the influence of the road environment. Under long-term bumps and vibrations, the limit bolts are likely to loosen, resulting in reduced connection stability between the fixed column and the lifting column, thereby affecting the normal use of the gear. Utility Model Content

[0005] The utility model aims to provide an electric vehicle gear rack to solve part or all of the above-mentioned technical problems.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An electric vehicle gear rack, comprising:

[0008] Top connecting plate;

[0009] A connecting ring is arranged on the top connecting plate for support;

[0010] A rotating ring is rotatably mounted on the inner wall of the connecting ring and is rotationally limited by the inner wall of the connecting ring;

[0011] A connecting gear is arranged on one side of the rotating ring;

[0012] Two sets of telescopic structures are arranged on the top connecting plate to adjust the installation height of the connecting gear;

[0013] Two sets of limit structures are arranged on two fixed columns respectively to improve the stability of the adjustment structure;

[0014] The lubrication structure is arranged on the top connecting plate and can lubricate the connecting ring and the rotating ring as the connecting gear rotates, thereby reducing the friction during rotation.

[0015] Preferably, the telescopic structure comprises:

[0016] A fixed column is arranged on the top connecting plate;

[0017] A limit slider is slidably mounted on the inner wall of the fixed column;

[0018] A guide sliding hole is provided on the limit sliding block;

[0019] A guide rod is slidably mounted in the guide sliding hole and fixedly mounted on the inner wall of the fixed column, and the guide rod cooperates with the guide sliding hole to limit the moving direction of the limit slider;

[0020] A lifting screw rod is arranged on one side of the limit slider and is slidably mounted on the inner wall of the fixed column, and can slide in the fixed column to adjust the installation height of the connecting gear;

[0021] An adjustment assembly is arranged on the fixed column and is used to control the lifting screw to slide on the fixed column;

[0022] Among them, a connecting flange is also arranged on the fixed column, which is used to connect and limit the lifting screw and the fixed column.

[0023] Preferably, the adjustment component comprises:

[0024] An adjusting ring is rotatably mounted on one side of the fixed column and threadedly sleeved on the lifting screw;

[0025] A threaded hole is provided on the inner wall of the adjusting ring, the lifting screw is threadedly installed in the threaded hole, and the internal thread of the threaded hole cooperates with the external thread of the lifting screw;

[0026] The limiting ring is rotatably mounted on the inner wall of the adjusting ring and fixedly mounted on one side of the fixing column, and is used for limiting the rotation of the adjusting ring.

[0027] Preferably, the limiting structure comprises:

[0028] Positioning bolts;

[0029] The positioning screw hole is provided on the inner wall of the limit slider, and the positioning bolt thread is installed in the limit slider;

[0030] Among them, a plurality of positioning sockets are opened on the fixing column, and the positioning bolt is movably installed in a corresponding positioning socket, and the positioning screw hole is connected with two corresponding positioning sockets.

[0031] Preferably, the lubrication structure comprises:

[0032] A lubricating oil box, arranged on the top connecting plate, for storing lubricating oil;

[0033] The oil leakage hole is provided on the inner wall of the lubricating oil box and is used to guide the lubricating oil to flow out;

[0034] A through hole is provided on the top connecting plate and the connecting ring, and is connected with the oil leakage hole so that the flowing lubricating oil contacts the rotating ring;

[0035] A plugging assembly is arranged on the lubricating oil box and is used to control the outflow of lubricating oil in the lubricating oil box;

[0036] The trigger assembly is arranged on the connecting ring and is used to squeeze the sealing assembly to make the lubricating oil flow out while the rotating ring rotates.

[0037] Preferably, the blocking component comprises:

[0038] A blocking rod is slidably mounted on the inner wall of the lubricating oil box, and the blocking rod is located in the oil leakage hole to block the oil leakage hole;

[0039] A fixed plate is arranged at one end of the blocking rod;

[0040] The two ends of the spring are respectively arranged on one side where the fixed plate and the lubricating oil box are close to each other, and the spring is slidably sleeved on the blocking rod.

[0041] Preferably, the trigger component comprises:

[0042] A push rod is arranged on one side of the blocking rod and is located in the through hole;

[0043] A connecting rod, arranged at one end of the top rod;

[0044] The movable hole is formed on the inner wall of the connecting ring and is connected with the through hole, so as to provide movable space for the connecting rod;

[0045] A blocking plate is slidably mounted on one side of the connecting ring and fixedly mounted on one end of the connecting rod, and is used to drive the connecting rod to move and block the movable hole;

[0046] Among them, a plurality of arc-shaped blocks for squeezing the sealing plate and moving it are arranged on the rotating ring.

[0047] Preferably, a sealing cap for adding lubricating oil is threadedly mounted on the lubricating oil box.

[0048] The beneficial effects of the utility model are:

[0049] The utility model can install the lifting screw on the electric vehicle by using the connecting flange and the bolts, and the connection restriction between the fixing column and the lifting screw can be released by rotating the positioning bolts on both sides and screwing them out, and then the fixing column can be made to slide on the lifting screw by rotating the corresponding adjusting ring, so as to adjust the installation height of the connecting gear, and the double limit is realized by the threaded cooperation between the lifting screw and the threaded hole, and the position restriction of the fixing column and the lifting screw by the positioning bolt, which can further improve the structural stability between the fixing column and the lifting screw and avoid loosening during use.

[0050] The utility model drives the rotating ring to rotate when the connecting gear and the motor rotate in cooperation, so that the arc-shaped resistance block reciprocates and squeezes the sealing plate. During the process, the blocking rod can reciprocate and seal the oil leakage hole, so that the lubricating oil in the lubricating oil box can flow intermittently and contact the rotating ring. Under the continuous rotation of the rotating ring, the lubricating oil can be smeared on the inner wall of the connecting ring, thereby reducing the rotational friction between the connecting ring and the rotating ring, so that the rotation of the connecting gear can be smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A schematic diagram of the structure of an electric vehicle gear rack provided by an embodiment of the utility model;

[0053] Figure 2 A schematic diagram of the partial structure of a gear rack of an electric vehicle provided by an embodiment of the utility model;

[0054] Figure 3 A schematic cross-sectional view of a gear rack of an electric vehicle provided in an embodiment of the utility model;

[0055] Figure 4 A schematic cross-sectional structure diagram of a fixing column of an electric vehicle gear rack provided by an embodiment of the utility model;

[0056] Figure 5 A schematic diagram of a lifting screw structure of an electric vehicle gear rack provided in an embodiment of the utility model.

[0057] Description of reference numerals:

[0058] 1. Top connecting plate; 2. Connecting ring; 3. Rotating ring; 4. Connecting gear; 5. Fixed column; 501. Limiting slider; 502. Guide slide hole; 503. Guide rod; 504. Lifting screw; 505. Adjusting ring; 506. Threaded hole; 507. Limiting ring; 508. Connecting flange; 6. Positioning bolt; 601. Positioning screw hole; 602. Positioning socket; 7. Lubricating oil box; 701. Oil leakage hole; 702. Through hole; 703. Blocking rod; 704. Fixed plate; 705. Spring; 706. Push rod; 707. Connecting rod; 708. Movable hole; 709. Blocking plate; 710. Arc-shaped block; 711. Sealing cover. DETAILED DESCRIPTION

[0059] 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.

[0060] Embodiment 1:

[0061] like Figures 1 to 5 As shown, the utility model provides an electric vehicle gear frame, including a top connecting plate 1, a connecting ring 2 arranged on the top connecting plate 1 for support, a rotating ring 3 rotatably installed on the inner wall of the connecting ring 2 and limited by the rotation of the inner wall of the connecting ring 2, and a connecting gear 4 arranged on one side of the rotating ring 3.

[0062] In order to achieve height adjustment of the connecting gear 4 and improve the stability of the structure, two sets of telescopic structures for adjusting the installation height of the connecting gear 4 are arranged on the top connecting plate 1, and limiting structures for improving the stability of the adjustment structure are arranged on the two fixed columns 5.

[0063] The telescopic structure includes a fixed column 5 arranged on the top connecting plate 1, a limit slider 501 slidably mounted on the inner wall of the fixed column 5, a guide slide hole 502 provided on the limit slider 501, a guide rod 503 slidably mounted in the guide slide hole 502 and fixedly mounted on the inner wall of the fixed column 5 for limiting the movable direction of the limit slider 501, a lifting screw 504 arranged on one side of the limit slider 501 and slidably mounted on the inner wall of the fixed column 5, which can slide in the fixed column 5 for adjusting the installation height of the connecting gear 4, and a lifting screw 504 arranged on the fixed column 5 The adjusting component is used to control the sliding of the lifting screw 504 on the fixed column 5. The fixed column 5 is also provided with a connecting flange 508 for connecting and limiting the lifting screw 504 and the fixed column 5. When the adjusting ring 505 slides, it can drive the fixed column 5 to slide on the lifting screw 504 and the limiting slider 501. By setting the limiting slider 501, the lifting screw 504 can be prevented from detaching from the fixed column 5. The continuously sliding fixed column 5 drives the two guide rods 503 to slide in the two guide sliding holes 502 respectively, thereby limiting the sliding direction of the fixed column 5.

[0064] Among them, the adjustment component includes an adjustment ring 505 rotatably installed on one side of the fixed column 5 and threadedly sleeved on the lifting screw 504, a threaded hole 506 is opened on the inner wall of the adjustment ring 505, the lifting screw 504 is threadedly installed in the threaded hole 506, the internal thread of the threaded hole 506 cooperates with the external thread of the lifting screw 504, and a limiting ring 507 rotatably installed on the inner wall of the adjustment ring 505 and fixedly installed on one side of the fixed column 5 for limiting the rotation of the adjustment ring 505 is rotated. The corresponding adjustment ring 505 is rotated so that the adjustment ring 505 can rotate and slide on the lifting screw 504 through the threaded hole 506 and the thread cooperation with the lifting screw 504. The sliding adjustment ring 505 can drive the fixed column 5 to slide on the lifting screw 504 and the limiting slider 501, thereby realizing the adjustment of the installation height of the connecting gear 4.

[0065] Among them, the limiting structure includes a positioning bolt 6, a positioning screw hole 601 provided on the inner wall of the limiting slider 501, the positioning bolt 6 is threadedly installed in the limiting slider 501, and a plurality of positioning sockets 602 are provided on the fixing column 5, the positioning bolt 6 is movably installed in a corresponding positioning socket 602, the positioning screw hole 601 is connected with the corresponding two positioning sockets 602, and the positioning bolts 6 on both sides are rotated and unscrewed from the corresponding positioning screw holes 601 and the positioning sockets 602, at this time, the restriction between the lifting screw 504 and the fixing column 5 can be released, the positioning screw hole 601 on the limiting slider 501 is realigned with the corresponding positioning socket 602, and then the positioning bolt 6 is inserted into the positioning socket 602 and re-screwed into the positioning screw hole 601, so that the position of the fixing column 5 and the lifting screw 504 can be re-fixed.

[0066] Embodiment 2:

[0067] On the basis of Example 1, in order to make the connecting gear 4 rotate more smoothly and reduce the rotational friction between the connecting ring 2 and the rotating ring 3, a lubrication structure is arranged on the top connecting plate 1, which can lubricate the connecting ring 2 and the rotating ring 3 as the connecting gear 4 rotates to reduce the friction during rotation.

[0068] Among them, the lubrication structure includes a lubricating oil box 7 arranged on the top connecting plate 1 for storing lubricating oil, an oil leakage hole 701 opened on the inner wall of the lubricating oil box 7 for guiding the lubricating oil to flow out, a through hole 702 opened on the top connecting plate 1 and the connecting ring 2 to allow the flowing lubricating oil to contact the rotating ring 3, the through hole 702 is connected with the oil leakage hole 701, a sealing component arranged on the lubricating oil box 7 for controlling the outflow of lubricating oil in the lubricating oil box 7, and a triggering component arranged on the connecting ring 2 for squeezing the sealing component to allow the lubricating oil to flow out while the rotating ring 3 rotates. The lubricating oil in the lubricating oil box 7 can flow to the rotating ring 3 through the oil leakage hole 701 and the through hole 702, and be smeared on the inner wall of the connecting ring 2 as the rotating ring 3 rotates, thereby realizing rotational lubrication of the connecting ring 2 and the rotating ring 3.

[0069] Among them, the blocking component includes a blocking rod 703 slidably installed on the inner wall of the lubricating oil box 7 for blocking the oil leakage hole 701, the blocking rod 703 is located in the oil leakage hole 701, a fixed plate 704 is arranged at one end of the blocking rod 703, and a spring 705 is arranged on the side where the fixed plate 704 and the lubricating oil box 7 are close to each other. The spring 705 is slidably sleeved on the blocking rod 703. When the blocking rod 703 is detached from the oil leakage hole 701, the lubricating oil in the lubricating oil box 7 can flow to the rotating ring 3. When the blocking rod 703 moves, it will drive the fixed plate 704 to move, so that the fixed plate 704 stretches the spring 705.

[0070] The trigger assembly includes a push rod 706 arranged on one side of the blocking rod 703, the push rod 706 is located in the through hole 702, a connecting rod 707 arranged at one end of the push rod 706, a movable hole 708 opened on the inner wall of the connecting ring 2 and connected to the through hole 702 to provide a movable space for the connecting rod 707, a blocking plate 709 slidably mounted on one side of the connecting ring 2 and fixedly mounted on one end of the connecting rod 707 for driving the connecting rod 707 to move and block the movable hole 708, and a plurality of arc-shaped blocks 71 are arranged on the rotating ring 3 for squeezing the blocking plate 709 and moving it. 0. A sealing cover 711 for adding lubricating oil is threadedly installed on the lubricating oil box 7. The lubricating oil box 7 can be opened by rotating the sealing cover 711, and lubricating oil can be added to the lubricating oil box 7. The rotating rotating ring 3 can drive multiple arc-shaped blocks 710 to move in a circle, so that the arc-shaped blocks 710 can reciprocately squeeze the sealing plate 709. When the sealing plate 709 is squeezed, it will drive the connecting rod 707 to move in the movable hole 708, and the moving connecting rod 707 will drive the push rod 706 to move, so that the moving push rod 706 drives the blocking rod 703 to detach from the oil leakage hole 701.

[0071] Working principle: During installation, the lifting screw 504 can be installed on the electric vehicle using the connecting flange 508 and the bolts, and then the positioning bolts 6 on both sides can be rotated to unscrew them from the corresponding positioning screw holes 601 and the positioning sockets 602. At this time, the restriction between the lifting screw 504 and the fixed column 5 can be released, and then the corresponding adjustment ring 505 can be rotated. The adjustment ring 505 can rotate on the restriction ring 507. By setting the restriction ring 507, it can be prevented from deviating when the adjustment ring 505 rotates, or falling off from the fixed column 5, and the continuous rotation The adjusting ring 505 can rotate and slide on the lifting screw 504 through the threaded hole 506 and the threaded engagement of the lifting screw 504. The sliding adjusting ring 505 can drive the fixing column 5 to slide on the lifting screw 504 and the limiting slider 501. The limiting slider 501 can prevent the lifting screw 504 from being separated from the fixing column 5. The continuously sliding fixing column 5 drives the two guide rods 503 to slide in the two guide sliding holes 502 respectively, thereby limiting the sliding direction of the fixing column 5, thereby realizing the adjustment of the installation height of the connecting gear 4.

[0072] After adjustment, realign the positioning screw hole 601 on the limit slider 501 with the corresponding positioning socket 602, then insert the positioning bolt 6 into the positioning socket 602 and screw it back into the positioning screw hole 601, re-fix the position of the fixing column 5 and the lifting screw 504, and complete the height adjustment;

[0073] When the connecting gear 4 rotates in cooperation with the motor, the connecting gear 4 can drive the rotating ring 3 to rotate on the inner wall of the connecting ring 2. The rotating ring 3 can be used to limit the rotation of the connecting gear 4. The continuously rotating rotating ring 3 can drive multiple arc-shaped blocks 710 to move in a circle, so that the arc-shaped blocks 710 can reciprocate and squeeze the blocking plate 709. When the blocking plate 709 is squeezed, it will drive the connecting rod 707 to move, and the moving connecting rod 707 will drive the push rod 706 to move, so that the moving push rod 706 drives the blocking rod 703 to detach from the oil leakage hole 701. At this time, the lubricating oil in the lubricating oil box 7 can pass through The oil flows to the rotating ring 3 through the leakage hole 701 and the through hole 702, and is smeared on the inner wall of the connecting ring 2 as the rotating ring 3 rotates, thereby realizing the rotational lubrication of the connecting ring 2 and the rotating ring 3. At the same time, the blocking rod 703 will drive the fixed plate 704 to move, so that the fixed plate 704 stretches the spring 705. When the arc-shaped stop block 710 is separated from the blocking plate 709, the stretched spring 705 will retract and drive the fixed plate 704 to move and reset, so that the fixed plate 704 drives the blocking rod 703 to slide and re-block the oil leakage hole 701, so that the lubricating oil can intermittently lubricate the rotating ring 3, and the lubrication is more uniform.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An electric vehicle gear rack, characterized in that: include: Top connecting plate (1); A connecting ring (2) is arranged on the top connecting plate (1) for supporting; A rotating ring (3) is rotatably mounted on the inner wall of the connecting ring (2) and is rotationally limited by the inner wall of the connecting ring (2); A connecting gear (4) is arranged on one side of the rotating ring (3); Two sets of telescopic structures are arranged on the top connecting plate (1) and are used to adjust the installation height of the connecting gear (4); Two sets of limiting structures are respectively arranged on two fixed columns (5) to improve the stability of the adjustment structure; The lubrication structure is arranged on the top connection plate (1) and can lubricate the connection ring (2) and the rotating ring (3) as the connection gear (4) rotates, thereby reducing friction during rotation.

2. The electric vehicle gear rack according to claim 1, characterized in that: The telescopic structure comprises: A fixing column (5) is arranged on the top connecting plate (1); A limit slider (501) is slidably mounted on the inner wall of the fixed column (5); A guide sliding hole (502) is provided on the limit sliding block (501); A guide rod (503) is slidably mounted in the guide sliding hole (502) and fixedly mounted on the inner wall of the fixed column (5), and the guide rod (503) cooperates with the guide sliding hole (502) to limit the moving direction of the limit slider (501); A lifting screw (504) is arranged on one side of the limiting slider (501) and is slidably mounted on the inner wall of the fixing column (5), and can slide inside the fixing column (5) to adjust the installation height of the connecting gear (4); An adjustment assembly is arranged on the fixed column (5) and is used to control the lifting screw (504) to slide on the fixed column (5); A connecting flange (508) is also arranged on the fixed column (5) for connecting and limiting the lifting screw (504) and the fixed column (5).

3. An electric vehicle gear rack as claimed in claim 2, characterized in that: The adjustment component comprises: An adjusting ring (505) is rotatably mounted on one side of the fixing column (5) and is threadedly sleeved on the lifting screw (504); A threaded hole (506) is provided on the inner wall of the adjusting ring (505), and the lifting screw (504) is threadedly installed in the threaded hole (506), and the internal thread of the threaded hole (506) and the external thread of the lifting screw (504) cooperate with each other; The limiting ring (507) is rotatably mounted on the inner wall of the adjusting ring (505) and fixedly mounted on one side of the fixing column (5), and is used to limit the rotation of the adjusting ring (505).

4. The electric vehicle gear rack according to claim 1, characterized in that: The limiting structure comprises: Positioning bolt (6); A positioning screw hole (601) is provided on the inner wall of the limiting slider (501), and a positioning bolt (6) is threadedly installed in the limiting slider (501); The fixing column (5) is provided with a plurality of positioning holes (602), the positioning bolt (6) is movably installed in a corresponding positioning hole (602), and the positioning screw hole (601) is connected to two corresponding positioning holes (602).

5. The electric vehicle gear rack according to claim 1, characterized in that: The lubrication structure comprises: A lubricating oil box (7), arranged on the top connecting plate (1), for storing lubricating oil; An oil leakage hole (701) is provided on the inner wall of the lubricating oil box (7) and is used to guide the lubricating oil to flow out; A through hole (702) is provided on the top connecting plate (1) and the connecting ring (2) and is connected to the oil leakage hole (701) so that the flowing lubricating oil contacts the rotating ring (3); A plugging assembly, arranged on the lubricating oil box (7) and used to control the outflow of lubricating oil in the lubricating oil box (7); The trigger component is arranged on the connecting ring (2) and is used to squeeze the blocking component to allow the lubricating oil to flow out as the rotating ring (3) rotates.

6. An electric vehicle gear rack as claimed in claim 5, characterized in that: The blocking component comprises: A blocking rod (703) is slidably mounted on the inner wall of the lubricating oil box (7), and the blocking rod (703) is located in the oil leakage hole (701) and is used to block the oil leakage hole (701); A fixing plate (704) is arranged at one end of the blocking rod (703); The spring (705) has two ends disposed on the sides of the fixing plate (704) and the lubricating oil box (7) close to each other, and the spring (705) is slidably sleeved on the blocking rod (703).

7. The electric vehicle gear rack according to claim 5, characterized in that: The trigger component comprises: A push rod (706) is arranged on one side of the blocking rod (703), and the push rod (706) is located in the through hole (702); A connecting rod (707) is arranged at one end of the top rod (706); A movable hole (708) is formed on the inner wall of the connecting ring (2) and is connected to the through hole (702) to provide a movable space for the connecting rod (707); A blocking plate (709) is slidably mounted on one side of the connecting ring (2) and fixedly mounted on one end of the connecting rod (707), and is used to drive the connecting rod (707) to move and block the movable hole (708); Wherein, a plurality of arc-shaped stoppers (710) for squeezing the blocking plate (709) and causing it to move are arranged on the rotating ring (3).

8. The electric vehicle gear rack according to claim 5, characterized in that: The lubricating oil box (7) is also threadedly mounted with a sealing cover (711) for adding lubricating oil.

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