A rack and pinion lifting type leg locking mechanism

Abstract

The present invention discloses a gear-rack lifting type leg locking mechanism, including: a movable leg and a fixed leg frame. The movable leg is disposed parallel inside the fixed leg frame. A lifting rack is arranged on the movable leg, and a locking tooth block is arranged on the fixed leg frame. The locking tooth block reciprocates toward the side of the lifting rack under the drive of a drive mechanism, for locking and unlocking the lifting rack, and controlling the moving position of the movable leg relative to the fixed leg frame. The gear-rack lifting type leg locking mechanism of the elevated trestle involved in the present invention realizes the locking of the legs of the lifting type elevated trestle in a relatively small structural space, and solves the problem of the lifting and fixing of the elevated trestle module.

Description

Technical Field

[0001] The present invention discloses a gear-rack lifting type leg locking mechanism, which relates to the technical field of elevated trestle transportation. Background Art

[0002] The elevated trestle spans the shallow water shore beach and the wave breaking zone in an elevated form, and is the main technical means for constructing the shore-connected transfer and unloading channel. There are extremely high requirements for the rapid lifting and reliable locking of the elevated trestle during the erection operation in terms of wind, wave, current, large tidal range, complex terrain, geology, and the large load passing process. There are also very high requirements for the control of the main dimensions of the elevated trestle module during sea transportation. The previous elevated lifting and locking technologies are difficult to meet the complex operating conditions of the elevated trestle for constructing the shore-connected transfer and unloading channel and the requirement of realizing large load locking in a small space under the operating time limit, structural dimensions, and load conditions. Summary of the Invention

[0003] Aiming at the defects in the above background art, the present invention provides a gear-rack lifting type leg locking mechanism, which realizes the locking of the legs of the lifting type elevated trestle in a relatively small structural space and solves the loading and transportation problems in the sea transportation of elevated trestle modules.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: A gear-rack lifting type leg locking mechanism includes: a movable leg, a fixed pile frame, a lifting rack, and a locking mechanism; the movable leg is arranged parallel inside the fixed pile frame;

[0005] The lifting rack is connected to the movable leg, and the fixed pile frame is connected with a locking mechanism adapted to the lifting rack.

[0006] The locking mechanism includes: a locking tooth block, a driving mechanism, and a tooth block positioning plate;

[0007] The tooth block positioning plate is connected to the fixed pile frame, the locking tooth block is slidably connected to the inner side of the tooth block positioning plate, and the locking tooth block reciprocates towards the side of the lifting rack under the drive of the driving mechanism and under the guidance of the tooth block positioning plate, for locking and unlocking the lifting rack and controlling the moving position of the movable leg relative to the fixed pile frame.

[0008] Two locking fixed clamping plates are symmetrically arranged on both sides inside the fixed pile frame, and both sides of the locking mechanism are clamped by the two locking fixed clamping plates. One end of the locking fixed clamping plate is connected to the fixed pile frame, which is mainly used to effectively transfer the force received by the locking tooth block to the locking fixed clamping plate and then to the fixed pile frame.

[0009] Further, lifting racks are symmetrically arranged on both sides of the movable leg, and two locking mechanisms adapted to the lifting racks are connected to the fixed pile frame.

[0010] Furthermore, two sets of driving mechanisms are provided, which are evenly arranged along the lifting direction of the lifting rack. The two driving mechanisms are connected by a connecting link, and the connecting link is designed to be parallel to the lifting direction of the lifting rack.

[0011] Furthermore, the driving mechanism includes: a driving link, a pushing shaft, a locking shaft, a fixed shaft and a driving oil cylinder. The rod end of the driving oil cylinder is connected to the locking shaft;

[0012] On both sides of the locking shaft, the pushing shaft and the fixed shaft are respectively connected by the driving link. The pushing shaft is connected to the locking tooth block, and the fixed shaft is connected to the locking fixed clamping plate. Under the telescopic action of the driving oil cylinder, the pushing shaft, the locking shaft and the fixed shaft change from a triangular distribution to a linear distribution, driving the locking tooth block to move towards the side of the lifting rack. A sliding groove for cooperating with the movement of the pushing shaft and the locking shaft is opened on the locking fixed clamping plate. The driving mechanism is mainly used to drive the locking tooth block to reciprocate towards the side of the lifting rack, so as to realize the locking and unlocking of the movable pile leg. The two ends of the locking shaft are symmetrically connected to the pushing shaft and the fixed shaft by the driving link.

[0013] Furthermore, the locking tooth block includes: a support block, locking teeth, a connecting rod shaft pushing hole and a tail handle. Two tail handles are evenly arranged on one side of the support block; the locking teeth are connected to the side of the support block close to the lifting rack. The tail handle is arranged on the other side of the support block. A connecting rod shaft pushing hole is opened on the support block, and a tooth block locking groove is opened on one side of the tail handle. The pushing shaft is arranged in the connecting rod shaft pushing hole.

[0014] The center of the connecting rod shaft pushing hole and the center of the top arc of the tooth block locking groove are on the same straight line, and the straight-line distance between the center of the connecting rod shaft pushing hole and the center of the top arc of the tooth block locking groove is adapted to the driving link.

[0015] Furthermore, the sliding groove includes: a pushing shaft sliding groove, a locking shaft sliding groove and a connecting rod shaft fixing hole;

[0016] The pushing shaft is slidably connected to the pushing shaft sliding groove, the locking shaft is slidably connected in the locking shaft sliding groove, the fixed shaft is connected to the connecting rod shaft fixing hole. The center line of the pushing shaft sliding groove, the center of the top arc of the locking shaft sliding groove and the center of the connecting rod shaft fixing hole are on the same straight line. The locking shaft sliding groove is designed in an arc shape, and the locking shaft sliding groove is designed with the connecting rod shaft fixing hole as the center. The locking shaft sliding groove is on the circumference with the connecting rod shaft fixing hole as the center and the driving link as the radius, so as to ensure that the driving link is a straight line after the locking shaft is pushed into the top locking position of the locking shaft sliding groove, so that the locking tooth block cannot retreat in the locking position.

[0017] Furthermore, the cylinder end of the driving oil cylinder is rotatably connected to the locking fixed clamping plate, and the connection point is directly below the bottom arc of the locking shaft sliding groove.

[0018] Furthermore, the tooth block positioning plates are connected to both sides of the locking tooth block, clamping the locking tooth block and the tail handle to ensure the pushing direction of the locking tooth block.

[0019] Furthermore, two tail handles are evenly arranged on one side of the support block.

[0020] Beneficial effects: The overhead trestle gear rack lifting leg locking mechanism involved in the present invention utilizes a hydraulically driven connecting rod mechanism to realize fast and reliable locking of the lifting overhead trestle pile legs within a relatively small structural space of the pile frame, providing a basis for the integrated and modular design of the lifting overhead trestle pile legs, and meeting the requirements of the elevated trestle for achieving large load locking in a small space under complex operating conditions and operating time limits. The lifting pile legs can be quickly and reliably locked and unlocked, providing conditions for realizing rapid deployment and construction of the overhead trestle pile legs under given sea conditions. The design combining the pile frame with the locking fixing splint ensures that the pile leg connection structure has sufficient rigidity and strength, thereby providing reliable guarantee for the safe passage of the elevated trestle under given sea conditions and shore conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the driving connecting rod in the locking gear block positioning plate of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the driving connecting rod outside the locking gear block positioning plate of the present invention;

[0025] Figure 5 This is a schematic diagram of the locking tooth block structure of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the locking gear block positioning plate of the present invention;

[0027] Figure 7 It is a schematic structural diagram of the rack and locking tooth block of the present invention in the locked state. DETAILED DESCRIPTION

[0028] The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are not intended to limit the scope of protection of the present invention.

[0029] like Figures 1 - 2 An embodiment shown: a rack and pinion lifting pile leg locking mechanism, comprising: a movable pile leg 1, a pile fixing frame 2, a lifting rack 3 and a locking mechanism;

[0030] The lifting rack 3 is connected to the movable leg 1, and the fixing frame 2 is connected with a locking mechanism adapted to the lifting rack 3;

[0031] The locking mechanism includes: a locking tooth block 4, a driving mechanism, and a tooth block positioning plate 8;

[0032] The tooth block positioning plate 8 is connected to the fixing frame 2. The locking tooth block 4 is slidably connected to the inner side of the tooth block positioning plate 8. The tooth block positioning plate 8 is connected to both sides of the locking tooth block 4 to clamp the locking tooth block 4 and the tail handle 43 to ensure the pushing direction of the locking tooth block 4. Driven by the driving mechanism, the locking tooth block 4 reciprocates toward the lifting rack 3 under the guidance of the tooth block positioning plate 8, for locking and unlocking the lifting rack 3, and controlling the moving position of the movable leg 1 relative to the fixing frame 2;

[0033] On both sides inside the fixing frame 2, two locking and fixing clamping plates 7 are symmetrically arranged. Both sides of the locking mechanism are clamped by the two locking and fixing clamping plates 7. One end of the locking and fixing clamping plate 7 is connected to the fixing frame 2, mainly used to effectively transfer the force received by the locking tooth block 4 to the locking and fixing clamping plate 7, and then to the fixing frame;

[0034] On both sides of the movable leg 1, lifting racks 3 are symmetrically arranged, and the fixing frame 2 is connected with two locking mechanisms adapted to the lifting racks 3;

[0035] There are two groups of driving mechanisms, which are evenly arranged along the lifting direction of the lifting rack 3. The two driving mechanisms are connected by a connecting link 6, and the connecting link 6 is designed parallel to the lifting direction of the lifting rack 3.

[0036] As Figures 3 - 4 shown, the driving mechanism includes: a driving link 5, a pushing shaft 51, a locking shaft 52, a fixing shaft 53, and a driving oil cylinder 9. The rod end of the driving oil cylinder 9 is connected to the locking shaft 52;

[0037] On both sides of each end of the locking shaft 52, the pushing shaft 51 and the fixing shaft 53 are respectively connected by the driving link 5. The pushing shaft 51 is connected to the locking tooth block 4, and the fixing shaft 53 is connected to the locking and fixing clamping plate 7. Under the telescopic action of the driving oil cylinder 9, the pushing shaft 51, the locking shaft 52, and the fixing shaft 53 change from a triangular distribution to a linear distribution, driving the locking tooth block 4 to move toward the lifting rack 3. A sliding groove for cooperating with the movement of the pushing shaft 51 and the locking shaft 52 is opened on the locking and fixing clamping plate 7. The driving mechanism is mainly used to drive the locking tooth block to reciprocate toward the lifting rack side, so as to realize the locking and unlocking of the movable leg.

[0038] As Figure 5As shown in the figure, the locking tooth block 4 includes: a support block 40, locking teeth 41, a connecting rod shaft pushing hole 42, and a tail handle 43. Two tail handles 43 are evenly arranged on one side of the support block 40; the locking teeth 41 are connected to the side of the support block 40 close to the lifting rack 3. The tail handle 43 is arranged on the other side of the support block 40. A connecting rod shaft pushing hole 42 is opened on the support block 40. A tooth block locking groove 44 is opened on one side of the tail handle 43. A pushing shaft 51 is arranged in the connecting rod shaft pushing hole 42;

[0039] The center of the connecting rod shaft pushing hole 42 and the center of the top arc of the tooth block locking groove 44 are on the same straight line. The straight-line distance between the center of the connecting rod shaft pushing hole 42 and the center of the top arc of the tooth block locking groove 44 is adapted to the driving connecting rod 5.

[0040] As Figure 6 shown in the figure, the sliding groove includes: a pushing shaft sliding groove 71, a locking shaft sliding groove 72, and a connecting rod shaft fixing hole 73;

[0041] The pushing shaft 51 is slidably connected to the pushing shaft sliding groove 71, the locking shaft 52 is slidably connected to the locking shaft sliding groove 72, the fixing shaft 53 is connected to the connecting rod shaft fixing hole 73. The center line of the pushing shaft sliding groove 71, the center of the top arc of the locking shaft sliding groove 72, and the center of the connecting rod shaft fixing hole 73 are on the same straight line. The locking shaft sliding groove 72 is designed in an arc shape. The locking shaft sliding groove is designed with the connecting rod shaft fixing hole 73 as the center. The locking shaft sliding groove 72 is on a circle with the connecting rod shaft fixing hole 73 as the center and the driving connecting rod 5 as the radius, so as to ensure that after the locking shaft 52 is pushed into the top locking position of the locking shaft sliding groove, the driving connecting rod is a straight line, so that the locking tooth block 4 cannot retreat in the locking position. The cylinder end of the driving oil cylinder 9 is rotatably connected to the locking fixed clamping plate 7, and the connection point is directly below the bottom arc of the locking shaft sliding groove.

[0042] As Figure 7 shown in the figure, when locking, the ejector rod of the driving oil cylinder pushes the locking shaft in the middle of the connecting rod. The driving connecting rod pushes the pushing shaft to drive the locking tooth block forward. At the same time, the upper and lower locking shafts respectively enter the tooth block locking groove along the locking shaft sliding groove. At this time, the pushing shaft, the locking shaft, and the connecting rod fixing shaft are on the same straight line to ensure that the locking shaft will not withdraw from the tooth block locking groove when the locking tooth block is stressed, resulting in locking failure. The force transmitted by the lifting rack to the locking tooth block is directly transmitted from the tooth block locking groove on the tail handle of the locking tooth block to the locking fixed clamping plate through the locking shaft, and finally transmitted to the fixed pile frame, realizing the locking between the lifting rack and the locking tooth block, and finally realizing the locking of the movable pile leg;

[0043] When unlocking, the ejector rod of the driving oil cylinder pulls back the locking shaft in the center of the connecting rod. The upper and lower locking shafts are respectively pulled out from the locking grooves of the toothed blocks and move downward along the locking shaft sliding grooves. At the same time, the driving connecting rod pulls the pushing shaft to pull back the locking toothed block through the connecting rod pushing shaft hole. The driving oil cylinder pulls back the locking shaft to the bottom end of the locking shaft sliding groove, and the lifting rack and the locking toothed block are unlocked.

[0044] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A rack and pinion lifting type leg locking mechanism, characterized in that, Comprising: Movable leg (1), pile fixing frame (2), lifting rack (3) and locking mechanism; the lifting rack (3) is connected to the movable leg (1), and the pile fixing frame (2) is connected with a locking mechanism adapted to the lifting rack (3). The locking mechanism includes: a locking tooth block (4), a driving mechanism and a tooth block positioning plate (8); the tooth block positioning plate (8) is connected to the pile fixing frame (2), and the locking tooth block (4) is slidably connected to the inner side of the tooth block positioning plate (8). Driven by the driving mechanism, the locking tooth block (4) reciprocates toward the lifting rack (3) side under the guidance of the tooth block positioning plate (8) for locking and unlocking the lifting rack (3) and controlling the moving position of the movable leg (1) relative to the pile fixing frame (2). Both sides of the locking mechanism are clamped by two locking and fixing clamping plates (7), and one end of the locking and fixing clamping plate (7) is connected to the pile fixing frame (2); the driving mechanism includes: a driving connecting rod (5), a pushing shaft (51), a locking shaft (52), a fixed shaft (53) and a driving oil cylinder (9). The rod end of the driving oil cylinder (9) is connected to the locking shaft (52); on both sides of each end of the locking shaft (52), the pushing shaft (51) and the fixed shaft (53) are respectively connected through the driving connecting rod (5). The pushing shaft (51) is connected to the locking tooth block (4), and the fixed shaft (53) is connected to the locking and fixing clamping plate (7). The pushing shaft (51), the locking shaft (52) and the fixed shaft (53) are changed from a triangular distribution to a linear distribution under the telescopic action of the driving oil cylinder (9), driving the locking tooth block (4) to move toward the lifting rack (3) side. The locking and fixing clamping plate (7) is provided with sliding grooves for cooperating with the movement of the pushing shaft (51) and the locking shaft (52). The locking tooth block (4) includes: a support block (40), locking teeth (41), a connecting rod shaft pushing hole (42), and a tail handle (43); the locking teeth (41) are connected to the side of the support block (40) near the lifting rack (3), the other side of the support block (40) is provided with a tail handle (43), the support block (40) is provided with a connecting rod shaft pushing hole (42), and a tooth block locking groove (44) is opened on one side of the tail handle (43). The pushing shaft (51) is arranged in the connecting rod shaft pushing hole (42); the center of the connecting rod shaft pushing hole (42) and the center of the top arc of the tooth block locking groove (44) are on the same straight line, and the straight-line distance between the center of the connecting rod shaft pushing hole (42) and the center of the top arc of the tooth block locking groove (44) is adapted to the driving connecting rod (5). The sliding groove includes: a pushing shaft sliding groove (71), a locking shaft sliding groove (72) and a connecting rod shaft fixing hole (73);The pushing shaft (51) is slidably connected to the pushing shaft chute (71), the locking shaft (52) is slidably connected to the locking shaft chute (72), the fixed shaft (53) is connected to the connecting rod shaft fixing hole (73), the center line of the pushing shaft chute (71), the center of the top arc of the locking shaft chute (72), and the center of the connecting rod shaft fixing hole (73) are on a straight line. The locking shaft chute (72) is designed in an arc shape, and the arc-shaped locking shaft chute is designed with the connecting rod shaft fixing hole (73) as the center of the circle. The cylinder end of the driving oil cylinder (9) is rotatably connected to the locking fixed clamping plate (7), and the connection point is directly below the bottom arc of the locking shaft chute.; 2. The rack and pinion lifting type leg locking mechanism according to claim 1, wherein Lifting racks (3) are symmetrically arranged on both sides of the movable pile leg (1), and two locking mechanisms adapted to the lifting racks (3) are connected to the pile fixing frame (2).

3. A rack and pinion lifting type leg locking mechanism according to claim 1, characterized in that, Two groups of driving mechanisms are provided, which are evenly arranged along the lifting direction of the lifting rack (3). The two driving mechanisms are connected by a connecting link (6), and the connecting link (6) is designed to be parallel to the lifting direction of the lifting rack (3).

4. A rack and pinion lifting type leg locking mechanism according to claim 1, characterized in that, The tooth block positioning plates (8) are connected to both sides of the locking tooth block (4), clamping the locking tooth block (4) and the tail handle (43) to ensure the pushing direction of the locking tooth block (4).

5. A rack and pinion lifting type leg locking mechanism according to claim 1, characterized in that, Two tail handles (43) are evenly arranged on one side of the support block (40).

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