High-strength anti-slip self-locking wall grab

Abstract

This utility model discloses a high-strength, anti-slip, self-locking wall grab, including a continuous wall grab and claws. A fixing plate is fixed on the continuous wall grab, and a bearing seat is also fixed on the continuous wall grab. A threaded sleeve is rotatably connected inside the bearing seat, and a lead screw is threaded through the inside of the threaded sleeve. A connecting rod is provided on the lead screw, and the front end of the connecting rod passes through the fixing plate and is connected to an installation plate. A limit component is provided on the left side of the installation plate, and two claws are fixed on the right side of the installation plate. The claws are adapted to the gear teeth of the continuous wall grab, and a reinforcing component is provided between the two claws. A transmission mechanism is provided on the continuous wall grab to drive the threaded sleeve to rotate. This utility model locks the gears of the continuous wall grab by setting claws, which can effectively prevent the continuous wall grab from opening accidentally after grabbing, significantly improving construction safety. This design ensures that the continuous wall grab remains in a closed state during lifting and movement.

Description

Technical Field

[0001] This utility model relates to the field of continuous wall grab technology, and in particular to a high-strength anti-slip self-locking wall grab. Background Technology

[0002] A diaphragm wall grab bucket is a specialized piece of equipment used for the construction of underground diaphragm walls. It uses a hydraulic system to drive the bucket teeth to open and close, enabling earth excavation and transportation. Its robust structure makes it suitable for complex geological formations. It efficiently completes trench excavation, ensuring the verticality and continuity of the wall. Widely used in building foundations, subways, dams, and other projects, it features high-quality wall construction and fast construction speed.

[0003] Existing continuous wall grabs mainly rely on the extension and retraction of hydraulic rods to achieve positioning and operation. This method of maintaining position solely through the hydraulic system has obvious defects. Due to the lack of mechanical self-locking or auxiliary positioning structures, the grab is easily affected by external forces and may displace during operation. Especially when encountering uneven strata or large resistance, the insufficient rigidity of the hydraulic system will lead to a decrease in the positioning accuracy of the grab, affecting the trenching quality and reducing the stability and reliability of construction.

[0004] Therefore, to address the problem that existing continuous wall grabs rely solely on hydraulic rods for positioning during use, lack an auxiliary self-locking structure, and have low stability, a high-strength, anti-slip, self-locking wall grab can be designed. Utility Model Content

[0005] To overcome the problem that existing continuous wall grabs rely solely on hydraulic rods for positioning during use, lacking an auxiliary self-locking structure and thus having low stability.

[0006] The technical solution of this utility model is as follows: a high-strength anti-slip self-locking wall grab bucket, including a continuous wall grab bucket; it also includes claws, a fixed plate is fixed on the continuous wall grab bucket, a bearing seat is also fixed on the continuous wall grab bucket, a threaded sleeve is rotatably connected inside the bearing seat, a lead screw is threadedly connected inside the threaded sleeve, a connecting rod is provided on the lead screw, the front end of the connecting rod passes through the fixed plate and is connected to an installation plate, a limit component is provided on the left side of the installation plate, two claws are fixed on the right side of the installation plate, the claws are adapted to the gear teeth of the continuous wall grab bucket, a reinforcing component is provided between the two claws, and a transmission mechanism is provided on the continuous wall grab bucket, the transmission mechanism is used to drive the threaded sleeve to rotate.

[0007] Preferably, a transmission mechanism is set up to drive the threaded sleeve to rotate under the cooperation of the bearing seat. The screw is restricted by the mounting plate and the limiting component and will not rotate with the threaded sleeve. Therefore, when the threaded sleeve rotates, the screw will move left and right. When the continuous wall grab bucket grabs, it moves to the right, so that the mounting plate drives the pawl to disengage from the tooth groove of the continuous wall grab bucket gear, without affecting its normal grabbing. After the grabbing is completed, the screw moves to the left, driving the pawl to engage with the tooth groove of the continuous wall grab bucket gear and lock it, improving the stability of the grabbing operation and preventing the continuous wall grab bucket from opening accidentally. This solves the problem that the existing continuous wall grab buckets rely only on the hydraulic rod itself to position the continuous wall grab bucket during use, lacking an auxiliary self-locking structure and having low stability.

[0008] Preferably, the limiting assembly includes two limiting rods fixed to the left side of the mounting plate, the two limiting rods being slidably connected to the fixed plate, and a limiting piece being installed at the left end of the limiting rods.

[0009] Preferably, the reinforcing component includes a fixing block fixed on two claws, a fixing seat mounted on each of the two fixing blocks, and a connecting rod fixed between the two fixing seats.

[0010] Preferably, the transmission mechanism includes a drive assembly, a linkage assembly, and a wiping assembly. The drive assembly drives the threaded sleeve to rotate through the linkage assembly, and the wiping assembly is used to clean the thread groove of the lead screw.

[0011] Preferably, the drive assembly includes a positioning plate fixed to the continuous wall grab bucket, a drive motor is mounted on the positioning plate, and the output end of the drive motor is connected to a drive gear, which is used to drive the drive gear to rotate.

[0012] Preferably, the linkage assembly includes a driven gear ring mounted on the left side of the threaded sleeve, with the driving gear meshing with the driven gear ring.

[0013] Preferably, the wiping assembly includes a retaining ring mounted on the left side of the driven toothed ring, and the inside of the retaining ring is provided with cleaning bristles.

[0014] The beneficial effects of this utility model are:

[0015] By locking the gears of the diaphragm wall grab bucket with claws, the accidental opening of the grab bucket after grabbing is effectively prevented, significantly improving construction safety. This design ensures that the diaphragm wall grab bucket remains closed during lifting and movement, preventing sudden opening due to vibration or external force, thus protecting the safety of construction personnel and equipment. At the same time, the stable grab state can improve work efficiency, reduce repetitive operations caused by accidental opening and closing, and extend the service life of the equipment. In addition, the claw locking mechanism enhances the adaptability of the diaphragm wall grab bucket in complex geological conditions, enabling it to maintain reliable performance in loose soil layers or high water pressure environments, providing higher stability and accuracy for diaphragm wall construction. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the claw of this utility model;

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the lead screw of this utility model;

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the transmission mechanism of this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the reinforcing component of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Continuous wall grab bucket; 2. Fixing plate; 3. Bearing seat; 4. Threaded sleeve; 5. Lead screw; 6. Mounting plate; 71. Limiting rod; 72. Limiting piece; 8. Claw; 91. Fixing block; 92. Fixing seat; 93. Connecting rod; 101. Positioning plate; 102. Drive motor; 103. Drive gear; 104. Driven gear ring; 105. Fixing ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides an embodiment of a high-strength, anti-slip, self-locking wall grab, including a continuous wall grab 1; it also includes claws 8, a fixing plate 2 fixed on the continuous wall grab 1, a bearing seat 3 fixed on the continuous wall grab 1, a threaded sleeve 4 rotatably connected inside the bearing seat 3, a lead screw 5 threadedly connected inside the threaded sleeve 4, a connecting rod provided on the lead screw 5, the front end of the connecting rod passing through the fixing plate 2 and connected to an mounting plate 6, a limit component provided on the left side of the mounting plate 6, and two claws 8 fixed on the right side of the mounting plate 6, the claws 8 being adapted to the gear teeth of the continuous wall grab 1, a reinforcing component provided between the two claws 8, and the continuous wall grab 1... A transmission mechanism is provided to drive the threaded sleeve 4 to rotate. The threaded sleeve 4 rotates within the bearing seat 3 through the transmission mechanism. At the same time, the lead screw 5 is kept stationary by the constraint of the mounting plate 6 and the limiting structure, so that the rotational motion of the threaded sleeve 4 is converted into the axial displacement of the lead screw 5. When the continuous wall grab bucket 1 is in operation, the lead screw 5 moves to the right, driving the mounting plate 6 to disengage the chuck 8 from the gear groove of the continuous wall grab bucket 1, ensuring the normal opening and closing of the continuous wall grab bucket 1. After the grab is completed, the lead screw 5 moves to the left, pushing the chuck 8 to engage with the gear groove of the continuous wall grab bucket 1 to achieve mechanical locking, thereby enhancing the structural stability of the continuous wall grab bucket 1 during operation and effectively preventing the continuous wall grab bucket 1 from opening unexpectedly.

[0024] Please see Figure 1 , Figure 2 and Figure 5 In this embodiment, the limiting component includes two limiting rods 71 ​​fixed to the left side of the mounting plate 6. The two limiting rods 71 ​​are slidably connected to the fixing plate 2. A limiting piece 72 is installed at the left end of the limiting rod 71. By setting the limiting rod 71 and the limiting piece 72, and cooperating with the mounting plate 6, the rotation of the lead screw 5 can be restricted. When the lead screw 5 moves, it can drive the limiting rod 71 to slide along the hole of the fixing plate 2, thereby improving the stability of the movement of the lead screw 5. In addition, the limiting piece 72 can limit the movement distance of the lead screw 5, preventing the lead screw 5 from disengaging from the threaded sleeve 4. The reinforcing component includes a fixing block 91 fixed on two claws 8. A fixing seat 92 is installed on each of the two fixing blocks 91. A connecting rod 93 is fixed between the two fixing seats 92. By setting the connecting rod 93, the force on the two claws 8 can be shared, thereby improving the stability of the claws 8.

[0025] Please see Figures 1-4 In this embodiment, the transmission mechanism includes a drive assembly, a linkage assembly, and a wiping assembly. The drive assembly drives the threaded sleeve 4 to rotate via the linkage assembly. The wiping assembly is used to clean the thread groove of the lead screw 5. The drive assembly includes a positioning plate 101 fixed on the continuous wall grab bucket 1. A drive motor 102 is mounted on the positioning plate 101. The output end of the drive motor 102 is connected to a drive gear 103. The drive motor 102 is used to drive the drive gear 103 to rotate. By setting the drive motor 102, the drive gear 103 can be driven to rotate during operation. The linkage assembly includes a component installed on the left side of the threaded sleeve 4. The driven gear ring 104 is meshed with the driving gear 103. By setting the driven gear ring 104, the driving gear 103 can drive the driven gear ring 104 to rotate synchronously when it rotates, thereby driving the threaded sleeve 4 to rotate. The wiping assembly includes a fixed ring 105 installed on the left side of the driven gear ring 104. The fixed ring 105 is provided with cleaning bristles. By setting the fixed ring 105, the driven gear ring 104 drives the fixed ring 105 to rotate synchronously when it rotates. The cleaning bristles inside the fixed ring 105 can clean the thread groove of the lead screw 5 to ensure transmission efficiency.

[0026] When the continuous wall grab bucket 1 needs to perform a grabbing action, the drive motor 102 starts, driving the drive gear 103 at its output end to rotate. The drive gear 103 meshes with the driven gear ring 104 installed on the left side of the threaded sleeve 4, thereby driving the threaded sleeve 4 to rotate within the bearing seat 3. Since the lead screw 5 is connected to the mounting plate 6 through a connecting rod, and two limit rods 71 ​​are fixed on the left side of the mounting plate 6, the limit rods 71 ​​slide through the holes on the fixed plate 2, and the ends are equipped with limit pieces 72. This prevents the lead screw 5 from rotating with the threaded sleeve 4, and it can only move to the right under the drive of the threaded sleeve 4. The rightward movement of the lead screw 5 drives the mounting plate 6 connected to it and the two claws 8 fixed on the right side of the mounting plate 6 to move to the right together, so that the claws 8 disengage from the tooth grooves of the gear of the continuous wall grab bucket 1, without hindering the normal opening and closing of the continuous wall grab bucket 1 to grab soil. After the grabbing operation is completed, the drive motor 102 starts. 2. Reverse rotation: The drive gear 103 and driven gear ring 104 drive the threaded sleeve 4 to rotate in the opposite direction, driving the lead screw 5 to move to the left. The leftward movement of the lead screw 5 drives the mounting plate 6 and the pawl 8 to move to the left, so that the pawl 8 can accurately engage in the tooth groove of the gear of the continuous wall grab bucket 1, realizing the self-locking fixation of the continuous wall grab bucket 1 in the closed state, preventing it from opening accidentally. During the rotation of the threaded sleeve 4, the fixing ring 105 installed on the left side of the driven gear ring 104 rotates synchronously. The cleaning bristles inside the fixing ring 105 continuously wipe the thread groove of the lead screw 5 to maintain smooth transmission. At the same time, the two pawls 8 share the force through the fixing seat 92 and the connecting rod 93 installed by the fixing block 91, enhancing the stability of the pawls 8. The limit rod 71 slides and guides in the hole of the fixing plate 2 to ensure that the lead screw 5 moves smoothly. The limit plate 72 limits the leftward movement limit of the lead screw 5 to prevent it from falling out.

[0027] Through the above steps, the transmission mechanism drives the threaded sleeve 4 to rotate. Since the threaded sleeve 4 is supported by the bearing seat 3 to achieve rotation, while the lead screw 5 is restricted by the mounting plate 6 and the limiting component and cannot rotate with it, the rotation of the threaded sleeve 4 will drive the lead screw 5 to move axially. When the continuous wall grab bucket 1 performs the grabbing action, the lead screw 5 moves to the right, causing the mounting plate 6 to drive the pawl 8 to disengage from the tooth groove of the gear of the continuous wall grab bucket 1, ensuring that the continuous wall grab bucket 1 can open and close freely. After the grabbing is completed, the lead screw 5 moves back to the left, pushing the pawl 8 to re-engage into the tooth groove of the gear of the continuous wall grab bucket 1, forming a mechanical lock, preventing the continuous wall grab bucket 1 from accidentally opening under load, thereby improving the stability and safety of the operation. This solves the problem that the existing continuous wall grab bucket 1 relies only on the hydraulic rod itself to position the continuous wall grab bucket 1 during use, lacks an auxiliary self-locking structure, and has low stability.

Claims

1. A high-strength, non-slip, self-locking wall grab, comprising a continuous wall grab (1); characterized in that: It also includes claws (8), a fixed plate (2) is fixed on the continuous wall grab (1), a bearing seat (3) is fixed on the continuous wall grab (1), a threaded sleeve (4) is rotatably connected inside the bearing seat (3), a screw (5) is threaded through the inside of the threaded sleeve (4), a connecting rod is provided on the screw (5), the front end of the connecting rod passes through the fixed plate (2) and is connected to the mounting plate (6), a limit component is provided on the left side of the mounting plate (6), two claws (8) are fixed on the right side of the mounting plate (6), the claws (8) are adapted to the gear tooth groove of the continuous wall grab (1), a reinforcing component is provided between the two claws (8), a transmission mechanism is provided on the continuous wall grab (1), and the transmission mechanism is used to drive the threaded sleeve (4) to rotate.

2. The high-strength, slip-resistant, self-locking wall grab bucket of claim 1, wherein: The limiting assembly includes two limiting rods (71) fixed on the left side of the mounting plate (6). The two limiting rods (71) are slidably connected to the fixing plate (2). A limiting piece (72) is installed on the left end of the limiting rod (71).

3. The high-strength, slip-resistant, self-locking wall grab bucket of claim 1, wherein: The reinforcing component includes a fixing block (91) fixed on two claws (8), a fixing seat (92) installed on each of the two fixing blocks (91), and a connecting rod (93) fixed between the two fixing seats (92).

4. The high-strength, slip-resistant, self-locking wall grab bucket of claim 1, wherein: The transmission mechanism includes a drive component, a linkage component and a wiping component. The drive component drives the threaded sleeve (4) to rotate through the linkage component, and the wiping component is used to clean the thread groove of the lead screw (5).

5. The high-strength, slip-resistant, self-locking wall grab bucket of claim 4, wherein: The drive assembly includes a positioning plate (101) fixed on the continuous wall grab (1), a drive motor (102) is mounted on the positioning plate (101), and the output end of the drive motor (102) is connected to a drive gear (103). The drive motor (102) is used to drive the drive gear (103) to rotate.

6. The high-strength, slip-resistant, self-locking wall grab bucket of claim 5, wherein: The linkage assembly includes a driven gear ring (104) mounted on the left side of the threaded sleeve (4), and the driving gear (103) meshes with the driven gear ring (104).

7. The high-strength, slip-resistant, self-locking wall grab bucket of claim 6, wherein: The wiping assembly includes a retaining ring (105) mounted on the left side of the driven toothed ring (104), and cleaning bristles are provided inside the retaining ring (105).

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