Pavement gear ring self-locking device

Abstract

The invention provides a road surface gear ring self-locking device, and relates to the field of gear ring self-locking. The road surface gear ring self-locking device comprises a mounting base, an outer pulling force application rod assembly, a traction pull rod assembly, a dead angle self-locking connecting rod mechanism, a sliding lock tooth assembly and an inner slide way block. The lower end of the dead angle self-locking connecting rod mechanism swings rightwards along with the movement of the traction pull rod assembly, the dead angle self-locking connecting rod mechanism forms dead angle self-locking, the sliding lock tooth assembly cannot push the dead angle self-locking connecting rod mechanism to move, the end of the sliding lock tooth assembly is kept in the tooth state of being meshed with the gear ring, and the purpose of locking the oval winding drum is achieved by locking the gear ring. The pavement slab state is kept stable; and the sliding lock tooth assembly cannot push the dead angle self-locking connecting rod mechanism to move, so that the end part of the sliding lock tooth assembly keeps a state of being meshed with the teeth of the gear ring, the teeth of the gear ring cannot push the sliding lock tooth assembly to slide into the inner slideway block along with bumping, and the state that the end part of the sliding lock tooth assembly is meshed with the teeth of the gear ring is automatically released.

Description

Technical Field

[0001] The present application relates to the technical field of gear ring self-locking, and in particular to a road gear ring self-locking device. Background Art

[0002] Pavement working equipment is a device for quickly laying road panels on muddy roads, sandy land and other places where it is inconvenient for vehicles to drive, so that vehicles can drive on the laid road panels. At present, the road panels are laid by gradually releasing the road panels with an elliptical drum, and the elliptical drum drives the gears through a hydraulic motor, and the gears drive the gear rings set at both ends of the elliptical drum through the gear meshing principle. However, when it is necessary to pause the elliptical drum to carry out the road panel retracting and releasing operation, the elliptical drum will rotate under the eccentric gravity of the road panel and the gravity drag of the road panel that has been released, which makes it inconvenient to lock the elliptical drum, so as to maintain the stability of the road panel state, which becomes a technical problem that needs to be solved. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a road surface gear ring self-locking device, which achieves the purpose of locking the elliptical reel by locking the gear ring, thereby achieving the effect of maintaining the stability of the road surface plate state, and the sliding lock tooth assembly forms a dead angle self-locking by a dead angle self-locking connecting rod mechanism, reducing the situation where the state of the sliding lock tooth assembly meshing with the gear ring teeth is automatically released.

[0004] According to the embodiment of the present application, the road gear ring self-locking device includes: a mounting seat, an external pulling force rod assembly, a traction rod assembly, a dead angle self-locking connecting rod mechanism, a sliding locking tooth assembly and an inner slide block.

[0005] The external pulling force rod assembly is connected to the lower side of the rear end of the mounting seat, one end of the traction rod assembly is hinged to the external pulling force rod assembly, the dead angle self-locking link mechanism is connected to the lower side of the mounting seat, the other end of the traction rod assembly is hinged to the lower end of the dead angle self-locking link mechanism, the lower end of the sliding locking tooth assembly is hinged to the right end of the dead angle self-locking link mechanism, the dead angle self-locking link mechanism can form dead angle self-locking, so that the sliding locking tooth assembly cannot push the dead angle self-locking link mechanism to move, the inner slide block is fixedly connected to the right side of the mounting seat, the upper end of the sliding locking tooth assembly slides through the interior of the inner slide block, and the end of the sliding locking tooth assembly can engage with the teeth of the gear ring.

[0006] According to some embodiments of the present application, the external pulling force rod assembly includes a hand-held rod, an external pulling force rod, a fixed shaft and a rotating cylinder, the hand-held rod is fixedly connected to the bottom end of the external pulling force rod, a pin connection hole is opened on the external pulling force rod, one end of the traction rod assembly is hinged to the pin connection hole, the fixed shaft is fixedly connected to the lower side of the rear end of the mounting seat, the rotating cylinder is rotatably sleeved on the fixed shaft, the external pulling force rod drives the rotating cylinder to rotate around the fixed shaft, the upper end of the external pulling force rod is hinged to the lower side of the rotating cylinder, and the external pulling force rod swings left and right around the lower side of the rotating cylinder.

[0007] According to some embodiments of the present application, the traction rod assembly includes a traction rod, a first ear seat and a second ear seat, the first ear seat and the second ear seat are connected to both ends of the traction rod, the first ear seat is hinged to the external pulling force rod assembly, and the second ear seat is hinged to the lower end of the dead angle self-locking connecting rod mechanism.

[0008] According to some embodiments of the present application, the dead angle self-locking linkage mechanism includes a base, a main rocker arm, a main link, an auxiliary link and a traction link, the base is fixedly connected to the lower side of the mounting seat, the lower side of the base is provided with a mounting groove inclined upward from left to right, the upper end of the main rocker arm is hinged to the upper end of the mounting groove, the lower end of the main rocker arm is hinged to one end of the traction rod assembly, the left end of the main link is hinged to the lower end of the mounting groove, the lower end of the traction link is hinged to the right end of the main link, the upper end of the traction link is hinged to the lower end of the sliding lock tooth assembly, the upper end of the auxiliary link is hinged to the main link, and the lower end of the auxiliary link is hinged to the main link. When the main link swings to a vertical position, the external pulling force rod assembly is in a vertical position, and the auxiliary link and the main link are folded and closed to an overlapping state, the lower end of the auxiliary link is located at the lower side of the main link, and the auxiliary link cannot push the main link to swing to form a dead angle self-locking.

[0009] According to some embodiments of the present application, the sliding lock tooth assembly includes a sliding tongue, a locking tooth, a limit plate and a hinged ear plate, the locking tooth is fixedly connected to the top end of the sliding tongue, the sliding tongue slides through the inner slide block, the locking tooth extends out of the upper end of the inner slide block, the locking tooth can be inserted between the teeth on the gear ring to form an engagement, the upper side of the limit plate is fixedly connected to the bottom end of the sliding tongue, the bottom end of the inner slide block can block the limit plate, the hinged ear plate is fixedly connected to the lower side of the limit plate, and the hinged ear plate is hinged to the lower end of the dead angle self-locking connecting rod mechanism.

[0010] The beneficial effects of the present application are as follows: when the self-locking sliding lock tooth assembly engages the teeth of the gear ring through the dead angle self-locking linkage mechanism, the lower end of the external pull force rod assembly swings to the right to a vertical state, and the lower end of the dead angle self-locking linkage mechanism swings to the right along with the movement of the traction pull rod assembly, and the dead angle self-locking linkage mechanism forms a dead angle self-locking, and the sliding lock tooth assembly cannot push the dead angle self-locking linkage mechanism to move, so that the end of the sliding lock tooth assembly remains in the state of engaging the teeth of the gear ring, and the purpose of locking the elliptical reel is achieved by locking the gear ring, thereby maintaining the stability of the road panel state; and the sliding lock tooth assembly cannot push the dead angle self-locking linkage mechanism to move, so that the end of the sliding lock tooth assembly remains in the state of engaging the teeth of the gear ring, so that the teeth of the gear ring will not push the sliding lock tooth assembly to slide into the inner slide block along with the bumps, and the state of the end of the sliding lock tooth assembly engaging the teeth of the gear ring is automatically released.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 is a structural schematic diagram of the self-locking state of the road gear ring self-locking device according to an embodiment of the present application; Figure 2 is a structural schematic diagram of releasing the self-locking state of the road gear ring self-locking device according to an embodiment of the present application; Figure 3 is a structural schematic diagram of an external pull force rod assembly according to an embodiment of the present application; Figure 4 is a schematic structural diagram of a traction rod assembly according to an embodiment of the present application; Figure 5 is a structural schematic diagram of a dead angle self-locking connecting rod mechanism according to an embodiment of the present application; Figure 6 It is a schematic structural diagram of a sliding lock tooth assembly according to an embodiment of the present application.

[0014] Icons: 100-mounting seat; 200-external pull force rod assembly; 210-hand lever; 220-external pull force rod; 230-pin hole; 240-fixed shaft; 250-rotating cylinder; 300-traction rod assembly; 310-traction rod; 320-first ear seat; 330-second ear seat; 400-dead angle self-locking connecting rod mechanism; 410-base; 420-main rocker arm; 430-main connecting rod; 440-auxiliary connecting rod; 450-traction connecting rod; 500-sliding locking tooth assembly; 510-sliding tongue; 520-locking tooth; 530-limiting plate; 540-hinged ear plate; 600-inner slide block. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0016] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] The road gear ring self-locking device according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0018] See also Figures 1 to 6 According to the embodiment of the present application, the road gear ring self-locking device includes: a mounting seat 100, an external pulling force rod assembly 200, a traction rod assembly 300, a dead angle self-locking connecting rod mechanism 400, a sliding locking tooth assembly 500 and an inner slide block 600.

[0019] See also Figure 1 to Figure 2The external pulling force rod assembly 200 is connected to the lower side of the rear end of the mounting seat 100, one end of the traction rod assembly 300 is hinged to the external pulling force rod assembly 200, the dead angle self-locking link mechanism 400 is connected to the lower side of the mounting seat 100, the other end of the traction rod assembly 300 is hinged to the lower end of the dead angle self-locking link mechanism 400, the lower end of the sliding lock tooth assembly 500 is hinged to the right end of the dead angle self-locking link mechanism 400, the dead angle self-locking link mechanism 400 can form a dead angle self-locking, so that the sliding lock tooth assembly 500 cannot push the dead angle self-locking link mechanism 400 to move, the inner slide block 600 is fixedly connected to the right side of the mounting seat 100, the upper end of the sliding lock tooth assembly 500 slides through the inner slide block 600, and the end of the sliding lock tooth assembly 500 can engage with the teeth of the gear ring. When the self-locking sliding lock tooth assembly 500 engages with the teeth of the gear ring through the dead angle self-locking link mechanism 400, the lower end of the external pull force rod assembly 200 swings to the right to a vertical state, and the lower end of the dead angle self-locking link mechanism 400 swings to the right along with the movement of the traction rod assembly 300, and the dead angle self-locking link mechanism 400 forms a dead angle self-locking, and the sliding lock tooth assembly 500 cannot push the dead angle self-locking link mechanism 400 to move, so that the end of the sliding lock tooth assembly 500 remains in the state of engaging with the teeth of the gear ring, and the purpose of locking the elliptical reel is achieved by locking the gear ring, thereby maintaining the stability of the road panel state; and the sliding lock tooth assembly 500 cannot push the dead angle self-locking link mechanism 400 to move, so that the end of the sliding lock tooth assembly 500 remains in the state of engaging with the teeth of the gear ring, so that the teeth of the gear ring will not push the sliding lock tooth assembly 500 to slide into the inner slide block 600 along with the up and down bumps, and the state of the end of the sliding lock tooth assembly 500 engaging with the teeth of the gear ring is automatically released.

[0020] See also Figures 1 to 3The external pulling force rod assembly 200 includes a hand-held rod 210, an external pulling force rod 220, a fixed shaft 240 and a rotating cylinder 250. The hand-held rod 210 is fixedly connected to the bottom end of the external pulling force rod 220. A pin hole 230 is provided on the external pulling force rod 220. One end of the traction rod assembly 300 is hinged to the pin hole 230. The fixed shaft 240 is fixedly connected to the lower side of the rear end of the mounting seat 100. The rotating cylinder 250 is rotatably sleeved on the fixed shaft 240. The external pulling force rod 220 drives the rotating cylinder 250 to rotate around the fixed shaft 240. The upper end of the external pulling force rod 220 is hinged to the lower side of the rotating cylinder 250. The external pulling force rod 220 swings left and right around the lower side of the rotating cylinder 250. The hand-held rod 210 drives the external pulling force rod 220 to swing left and right around the lower side of the rotating cylinder 250. The external pulling force rod 220 changes the state of the dead angle self-locking connecting rod mechanism 400 by pulling the pull rod assembly 300, and then controls the sliding lock tooth assembly 500 to switch between the engaged and disengaged states. In the engaged and disengaged states, the hand-held rod 210 can limit the hand-held rod 210 from swinging left and right through the support plate with double card slots. The hand-held rod 210 can rotate around the fixed axis 240 through the rotating cylinder 250 to disengage the card slot, so that the hand-held rod 210 can restore the freedom to swing left and right. Conversely, the hand-held rod 210 is inserted into the card slot, and the freedom of the hand-held rod 210 to swing left and right is limited by the card slot.

[0021] See also Figures 1 to 4 The traction rod assembly 300 includes a traction rod 310, a first ear seat 320 and a second ear seat 330. The first ear seat 320 and the second ear seat 330 are connected to both ends of the traction rod 310. The first ear seat 320 is hinged to the external pull force rod assembly 200, and the second ear seat 330 is hinged to the lower end of the dead angle self-locking link mechanism 400. When the external pull force rod 220 swings left and right, the external pull force rod 220 drives the first ear seat 320, the first ear seat 320 drives the second ear seat 330 through the traction rod 310, and the second ear seat 330 drives the lower end of the dead angle self-locking link mechanism 400 to swing, so that the dead angle self-locking link mechanism 400 is switched between the self-locking state and the self-locking release state.

[0022] See also Figures 1 to 5The dead angle self-locking linkage mechanism 400 includes a base 410, a main swing rod 420, a main connecting rod 430, an auxiliary connecting rod 440 and a traction connecting rod 450. The base 410 is fixedly connected to the lower side of the mounting base 100. The lower side of the base 410 is provided with a mounting groove inclined upward from left to right. The upper end of the main swing rod 420 is hinged to the upper end of the mounting groove. The lower end of the main swing rod 420 is hinged to one end of the traction rod assembly 300. The left end of the main connecting rod 430 is hinged to the lower end of the mounting groove. The lower end of the traction connecting rod 450 is hinged to the main connecting rod 4 At the right end of 30, the upper end of the traction link 450 is hinged to the lower end of the sliding lock tooth assembly 500, the upper end of the auxiliary link 440 is hinged to the main link 430, and the lower end of the auxiliary link 440 is hinged to the main link 430. When the main link 430 swings to a vertical position, the external pulling force rod assembly 200 is in a vertical position, and the auxiliary link 440 and the main link 430 are folded and closed to a overlapping state, and the lower end of the auxiliary link 440 is located on the lower side of the main link 430, and the auxiliary link 440 cannot push the main link 430 to swing to form a dead angle self-locking. The second ear seat 330 drives the lower end of the main swing rod 420 to swing left and right. When the lower end of the main swing rod 420 swings to the right, the main swing rod 420 drives the lower end of the auxiliary connecting rod 440 to swing to the upper right. The upper end of the auxiliary connecting rod 440 pushes the right end of the main connecting rod 430 to swing upward. The right end of the main connecting rod 430 pushes the traction connecting rod 450. The traction connecting rod 450 pushes the sliding lock tooth assembly 500 to slide upward along the inner slide block 600, so that the end of the sliding lock tooth assembly 500 is inserted into the teeth of the gear ring to form an engagement. At the same time, when the main connecting rod 430 swings to a vertical position, the external pulling force rod assembly 200 is also in a vertical position, and the auxiliary connecting rod 440 and the main connecting rod 430 are folded and closed to a overlapping state. The auxiliary connecting rod 440 and the main connecting rod 430 form a dead angle self-locking, so that the sliding lock tooth assembly 500 cannot push the main connecting rod 430 to swing through the auxiliary connecting rod 440. When the lower end of the main swing arm 420 swings to the left, the main swing arm 420 drives the lower end of the auxiliary connecting rod 440 to swing to the lower left, and the upper end of the auxiliary connecting rod 440 pulls the right end of the main connecting rod 430 to swing downward, and the right end of the main connecting rod 430 pulls the traction connecting rod 450, and the traction connecting rod 450 pulls the sliding lock tooth assembly 500 to slide downward along the inner slide block 600, so that the end of the sliding lock tooth assembly 500 leaves the teeth of the gear ring and releases the meshing state, so that the gear ring recovers the freedom of rotation.

[0023] See also Figures 1 to 6The sliding lock tooth assembly 500 includes a sliding tongue 510, a lock tooth 520, a limit plate 530 and a hinged ear plate 540. The lock tooth 520 is fixedly connected to the top of the sliding tongue 510. The sliding tongue 510 slides through the inner slide block 600. The lock tooth 520 extends out of the upper end of the inner slide block 600. The lock tooth 520 can be inserted between the teeth on the gear ring to form an engagement. The upper side of the limit plate 530 is fixedly connected to the bottom end of the sliding tongue 510. The bottom end of the inner slide block 600 can block the limit plate 530. The hinged ear plate 540 is fixedly connected to the lower side of the limit plate 530. The hinged ear plate 540 is hinged to the lower end of the dead angle self-locking connecting rod mechanism 400. When the lower end of the main swing arm 420 swings to the right, the traction link 450 pushes the sliding tongue 510 through the hinged ear plate 540 to slide upward along the inner slide block 600, so that the locking tooth 520 is inserted into the teeth of the gear ring to form an engagement; when the lower end of the main swing arm 420 swings to the left, the traction link 450 pulls the sliding tongue 510 through the hinged ear plate 540 to slide downward along the inner slide block 600, so that the locking tooth 520 leaves the teeth of the gear ring to release the engagement state, and the gear ring recovers the freedom of rotation.

[0024] Specifically, the working principle of the road gear ring self-locking device is as follows: when the hand-held rod 210 drives the external pulling force rod 220 to swing to the right around the lower side of the rotating cylinder 250, the external pulling force rod 220 pushes the first ear seat 320, the first ear seat 320 pushes the second ear seat 330 through the traction rod 310, the second ear seat 330 drives the lower end of the main swing rod 420 to swing to the right, the main swing rod 420 drives the lower end of the auxiliary connecting rod 440 to swing to the upper right, the upper end of the auxiliary connecting rod 440 pushes the right end of the main connecting rod 430 to swing upward, the right end of the main connecting rod 430 pushes the traction connecting rod 450, the traction connecting rod 450 pushes the sliding tongue 510 to slide upward along the inner slide block 600 through the hinged ear plate 540, so that the locking gear The teeth of 520 are inserted into the gear ring to form an engagement, and the gear ring is locked by the locking tooth 520 to achieve the purpose of locking the elliptical reel and keep the road panel state stable. When the main connecting rod 430 swings to a vertical position, the hand-held rod 210 and the external pulling force rod 220 are also in a vertical position, and the auxiliary connecting rod 440 and the main connecting rod 430 are folded and closed to a overlapping state, and the auxiliary connecting rod 440 and the main connecting rod 430 form a dead angle self-locking, so that the sliding tongue 510 cannot push the main connecting rod 430 to swing through the auxiliary connecting rod 440, and keep the lock tooth 520 locked to the gear ring, so that the teeth of the gear ring will not push the lock tooth 520 with the up and down bumps, thereby reducing the automatic release of the state of the lock tooth 520 meshing with the teeth of the gear ring.

[0025] When the hand-held rod 210 drives the external pulling force rod 220 to swing to the left around the lower side of the rotating cylinder 250, the external pulling force rod 220 pulls the first ear seat 320, the first ear seat 320 pulls the second ear seat 330 through the traction rod 310, the second ear seat 330 pulls the lower end of the main swing rod 420 to swing to the left, the main swing rod 420 drives the lower end of the auxiliary connecting rod 440 to swing to the lower left, the upper end of the auxiliary connecting rod 440 pulls the right end of the main connecting rod 430 to swing downward, the right end of the main connecting rod 430 pulls the traction connecting rod 450, the traction connecting rod 450 pulls the sliding tongue 510 to slide downward along the inner slide block 600 through the hinged ear plate 540, so that the lock tooth 520 leaves the teeth of the gear ring and releases the meshing state, so that the gear ring recovers the freedom of rotation.

[0026] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A road gear ring self-locking device, characterized in that: include: Mounting seat (100); An external pulling force applying rod assembly (200), the external pulling force applying rod assembly (200) being connected to the lower side of the rear end of the mounting seat (100); A traction rod assembly (300), one end of the traction rod assembly (300) being hinged to the external pulling force rod assembly (200); A dead angle self-locking link mechanism (400), wherein the dead angle self-locking link mechanism (400) is connected to the lower side of the mounting seat (100), and the other end of the traction rod assembly (300) is hinged to the lower end of the dead angle self-locking link mechanism (400); A sliding lock tooth assembly (500), wherein the lower end of the sliding lock tooth assembly (500) is hinged to the right end of the dead angle self-locking link mechanism (400), and the dead angle self-locking link mechanism (400) can form a dead angle self-locking, so that the sliding lock tooth assembly (500) cannot push the dead angle self-locking link mechanism (400) to move; An inner slide block (600), the inner slide block (600) is fixedly connected to the right side of the mounting seat (100), the upper end of the sliding lock tooth assembly (500) slides through the interior of the inner slide block (600), and the end of the sliding lock tooth assembly (500) can engage with the teeth of the gear ring.

2. The road gear ring self-locking device according to claim 1, characterized in that: The external pulling force rod assembly (200) comprises a hand-held rod (210), an external pulling force rod (220), a fixed shaft (240) and a rotating cylinder (250), wherein the hand-held rod (210) is fixedly connected to the bottom end of the external pulling force rod (220), a pin connection hole (230) is provided on the external pulling force rod (220), one end of the traction rod assembly (300) is hinged to the pin connection hole (230), the fixed shaft (240) is fixedly connected to the lower side of the rear end of the mounting seat (100), the rotating cylinder (250) is rotatably sleeved on the fixed shaft (240), the external pulling force rod (220) drives the rotating cylinder (250) to rotate around the fixed shaft (240), the upper end of the external pulling force rod (220) is hinged to the lower side of the rotating cylinder (250), and the external pulling force rod (220) swings left and right around the lower side of the rotating cylinder (250).

3. The road gear ring self-locking device according to claim 1, characterized in that: The traction rod assembly (300) comprises a traction rod (310), a first ear seat (320) and a second ear seat (330); the first ear seat (320) and the second ear seat (330) are connected to two ends of the traction rod (310); the first ear seat (320) is hinged to the external pulling force rod assembly (200); and the second ear seat (330) is hinged to the lower end of the dead angle self-locking connecting rod mechanism (400).

4. The road gear ring self-locking device according to claim 1, characterized in that: The dead angle self-locking link mechanism (400) comprises a base (410), a main swing arm (420), a main connecting rod (430), an auxiliary connecting rod (440) and a traction connecting rod (450); the base (410) is fixedly connected to the lower side of the mounting base (100); a mounting groove inclined upward from left to right is provided on the lower side of the base (410); the upper end of the main swing arm (420) is hinged to the upper end of the mounting groove; the lower end of the main swing arm (420) is hinged to one end of the traction rod assembly (300); the left end of the main connecting rod (430) is hinged to the lower end of the mounting groove; the lower end of the traction connecting rod (450) is hinged to the main connecting rod (430). At the right end, the upper end of the traction link (450) is hinged to the lower end of the sliding lock tooth assembly (500), the upper end of the auxiliary link (440) is hinged to the main link (430), and the lower end of the auxiliary link (440) is hinged to the main link (430). When the main link (430) swings to a vertical position, the external pulling force rod assembly (200) is in a vertical position, and the auxiliary link (440) and the main link (430) are folded and closed to an overlapping state. The lower end of the auxiliary link (440) is located on the lower side of the main link (430), and the auxiliary link (440) cannot push the main link (430) to swing to form a dead angle self-locking.

5. The road gear ring self-locking device according to claim 1, characterized in that: The sliding lock tooth assembly (500) comprises a sliding tongue (510), a lock tooth (520), a limit plate (530) and a hinged ear plate (540); the lock tooth (520) is fixedly connected to the top end of the sliding tongue (510); the sliding tongue (510) slides through the inner slide block (600); the lock tooth (520) extends out of the upper end of the inner slide block (600); the lock tooth (520) can be inserted between the teeth on the gear ring to form an engagement; the upper side of the limit plate (530) is fixedly connected to the bottom end of the sliding tongue (510); the bottom end of the inner slide block (600) can block the limit plate (530); the hinged ear plate (540) is fixedly connected to the lower side of the limit plate (530); and the hinged ear plate (540) is hinged to the lower end of the dead angle self-locking connecting rod mechanism (400).

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