Clamping jaw structure for grabbing arch center and grabbing clamp

Abstract

The utility model relates to a clamping jaw structure and a grabbing clamp for grabbing an arch frame, which comprise a rod piece and a clamping head, the clamping head is connected with the rod piece, and the clamping head can be detached relative to the rod piece. The clamping jaw structure for grabbing the lagging jack and the grabbing clamp have the advantages that the clamping heads are detachable, different types of clamping heads can be replaced conveniently according to different types of grabbed lagging jacks, and the application range is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of arch frame construction, in particular to a claw structure for arch frame grasping and a grasping fixture. Background Art

[0002] In recent years, the underground engineering cause in China has developed rapidly, and mechanized operation has been gradually widely promoted and applied in engineering technology, especially in the field of underground tunnel construction.

[0003] In the prior art, for example, Chinese Utility Model Patent CN209892246 U discloses an angle-adjustable telescopic arm for steel arch frame installation, which includes a hinge seat, a telescopic section, and a gripper mounting part; one end of the telescopic section is hinged to the hinge seat, and the other end is hinged to the gripper mounting part; a telescopic section pitching mechanism is arranged between the telescopic section and the hinge seat, and the telescopic section pitching mechanism adjusts the pitching angle of the telescopic section relative to the hinge seat; an angle adjustment mechanism is arranged between the telescopic section and the gripper mounting part, and the angle adjustment mechanism adjusts the deflection angle of the gripper mounting part relative to the telescopic section. A gripper mechanism is installed on its gripper mounting part, and the claws on the gripper mechanism are used to clamp the steel arch frame. However, the commonly used steel arch frames are I-beams and lattice arch frames, and a single claw is difficult to be applicable to both types of steel arch frames at the same time. Summary of the Utility Model

[0004] An object of the present application is to provide a claw structure for arch frame grasping and a grasping fixture, which can improve the applicability to different types of steel arch frames.

[0005] The technical solution adopted in the present application is: a claw structure for arch frame grasping, including a rod and a chuck, the chuck is connected to the rod, and the chuck is detachable relative to the rod.

[0006] Compared with the prior art, the advantage of the present application is that the chuck is detachable, which is convenient to replace different types of chucks according to different types of arch frames to be grasped, thus expanding the applicable range.

[0007] In some embodiments of the present application, the rod is integrally arc-shaped.

[0008] In some embodiments of the present application, one of the chuck or the rod is provided with a slot, and the other is provided with a block cooperating with the slot; at least one pair of mutually abutting planes are arranged between the slot and the block; the rod and the chuck are connected by a pin shaft.

[0009] In some embodiments of the present application, the cross-sectional area of the end of the chuck gradually decreases or gradually increases from the side close to the rod to the side far from the rod.

[0010] A grasping fixture includes a support platform and a detachable jaw structure. The jaw structure is connected to the support platform and is used for switching between grasping lattice arch frames and I-beams. The support platform provides an installation position.

[0011] In some embodiments of the present application, the jaw structure is integral.

[0012] In some embodiments of the present application, the jaw structure is a kind of jaw structure for arch frame grasping as described above; the rods are arranged on both sides of the support platform and are rotatably connected to the support platform; the clamping directions of the two chucks face the vertical plane where the support platform is located.

[0013] In some embodiments of the present application, a limiting device is further included. The limiting device is used for limiting the arch frame and is detachably connected to the support platform through a pin structure; the limiting device is arranged left and right relative to the support platform.

[0014] Furthermore, the limiting device includes a limiting plate and a bottom plate. The limiting plate and the bottom plate are arranged perpendicular to each other; the bottom plate is attached to the upper surface of the support platform; the limiting plate is provided with guide grooves, and the connection line between the two guide grooves is parallel to the length direction of the support platform; a reinforcing plate is provided between the limiting plate and the bottom plate.

[0015] Furthermore, the bottom plate includes a cross plate and a vertical plate. The top of the vertical plate is connected to the middle of the cross plate, and the whole is in a T shape; cross bars are provided at both ends of the support platform, and the cross bars cooperate with the cross plate; the rods are arranged between the two cross bars.

[0016] Furthermore, one side of the cross plate is connected to the cross bar through a fixing pin, and the side of the vertical plate away from the cross plate is connected to the support platform through a fixing pin.

[0017] Furthermore, the rod is rotatably connected to the support platform through a connecting seat. The connecting seat is arranged on both sides of the support platform and is fixedly connected to the support platform. The rod is hinged to the connecting seat; a clamping oil cylinder is further included. Both ends of the clamping oil cylinder are respectively hinged to the bottoms of the rods on both sides; the clamping oil cylinder can drive the two rods to open and close; a limiting rod is provided on the connecting seat, and in the state where the chucks are open, the rod abuts against the limiting rod.

[0018] In some embodiments of the present application, a hinge seat is provided at one end of the support platform, and the hinge seat is used for connecting to the boom of an engineering trolley. Description of the Drawings

[0019] Figure 1 is the structural schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 is the exploded view of Embodiment 1 of the present utility model;

[0021] Figure 3Schematic structure of Embodiment 2 of the present utility model Figure 1

[0022] Figure 4 Schematic structure of Embodiment 2 of the present utility model Figure 2 ;

[0023] Figure 5 Schematic diagram of the structure of the limiting device in Embodiment 2 of the present utility model;

[0024] Figure 6 Schematic installation diagram of the grid arch and the limiting device in Embodiment 2 of the present utility model;

[0025] Figure 7 Schematic diagram of the structure of Embodiment 3 of the present utility model.

[0026] In the figure: 1, support platform; 3, limiting device; 4, limiting plate; 5, bottom plate; 6, guiding groove; 7, reinforcing plate; 8, cross plate; 9, vertical plate; 10, cross bar; 11, fixing pin; 13, clamping oil cylinder; 14, connecting seat; 15, rod member; 16, chuck; 17, hinge seat; 18, first pin hole; 19, second pin hole; 20, connecting plate; 21, grid arch; 22, card slot; 23, card block; 24, pin shaft; 25, limiting rod. Specific implementation manners

[0027] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following combines the attached drawings and preferred embodiments to detail the specific implementation manners, structures, features and their effects according to the present utility model as follows.

[0028] Embodiment 1:

[0029] A claw structure for arch grabbing provided in this embodiment is as shown in Figure 1 、 Figure 2 , and includes a rod member 15 and a chuck 16. The chuck 16 is connected to the rod member 15, and the chuck 16 is detachable relative to the rod member 15. The detachable chuck 16 facilitates replacing different types of chucks 16 according to different types of grabbed arches, expanding the scope of application.

[0030] For reliable connection, one of the chuck 16 or the rod member 15 is provided with a card slot 22, and the other is provided with a card block 23 that cooperates with the card slot 22; there are at least a pair of mutually abutted planes between the card slot 22 and the card block 23; the rod member 15 and the chuck 16 are connected by a pin shaft 24. The end of the pin shaft 24 is limited by a spring pin. In this embodiment, the card slot 22 is located on the chuck 16, and the card block 23 is located on the rod member 15.

[0031] For reliable grasping, the rod 15 is integrally arc-shaped; the cross-sectional area of the end of the chuck 16 gradually decreases or gradually increases from the side close to the rod 15 to the side far from the rod 15, and it can be applied to grid arch frames or I-beams. In this embodiment, the rod 15 is integrally L-shaped. The L-shaped rod 15 can extend from the side to the center, which is convenient for grasping the arch frame and has high structural strength; the cross-sectional area of the end of the chuck 16 gradually decreases from the side close to the rod 15 to the side far from the rod 15, and the chuck 16 gradually decreases, which can be adapted to the grid arch frame 21. The front end is small, which can reduce the risk of collision with the peripheral pipe fittings of the grid arch frame 21 when the chuck 16 extends, and is convenient for the chuck 16 to accurately grasp the center.

[0032] Embodiment 2:

[0033] A grasping fixture provided in this embodiment, as Figure 3 , Figure 4 , Figure 6 shown, includes a support platform 1 and a detachable claw structure. The claw structure is connected to the support platform 1, and the claw structure is used for switching between grasping grid arch frames or grasping I-beams. The support platform 1 is used to provide an installation position.

[0034] To ensure the reliability of the claw structure, the claw structure is a claw structure for arch frame grasping described in Embodiment 1; the rod 15 is arranged on both sides of the support platform 1 and is rotatably connected to the support platform 1; the clamping directions of the two chucks 16 face the vertical plane where the support platform 1 is located. In this embodiment, two pairs of chucks 16 are provided and are respectively located on both sides in the length direction of the support platform 1.

[0035] To ensure the reliable installation of the arch frame, a limiting device 3 is further included. The limiting device 3 is used for limiting the arch frame. The limiting device 3 is detachably connected to the support platform 1 through a pin structure; the limiting device 3 is arranged left and right relative to the support platform 1. The design of the limiting device 3 can improve the limitation of the arch frame and prevent the arch frame from rotating left and right. Especially for the grid arch frame 21, the grid arch frame 21 is composed of multiple pipe fittings, and the outer surface of the pipe fittings is smooth. In the state of using the claw structure alone, the grasping position of the claw structure is inaccurate or the pipe fittings slide during grasping, which easily causes the grid arch frame 21 to tilt, which is not conducive to the later placement of the grid arch frame 21. The limiting device 3 can limit the tilt of the grid arch frame 21, which is convenient for the claw structure to grasp and makes the fixation of the grid arch frame 21 more firm; the limiting device 3 is detachably connected. After disassembly, the grasping fixture can be directly used for I-beams, and it is convenient to replace different types of limiting devices 3, so that suitable types of limiting devices 3 can be used corresponding to I-beams and grid arch frames 21, and the pin structure can achieve quick replacement.

[0036] To ensure reliable limiting and guiding, as Figure 5As shown, the limiting device 3 includes a limiting plate 4 and a bottom plate 5, and the limiting plate 4 and the bottom plate 5 are arranged perpendicular to each other; the bottom plate 5 is attached to the upper surface of the support platform 1; a guiding groove 6 is provided on the limiting plate 4, and the connection line between the two guiding grooves 6 is parallel to the length direction of the support platform 1; a reinforcing plate 7 is provided between the limiting plate 4 and the bottom plate 5; the width of the guiding groove 6 is matched with the width of the grille arch 21. In this embodiment, the reinforcing plate 7 is arranged on both sides outside the guiding groove 6. The limiting plate 4 is used for connecting with the grille arch 21, and the groove wall of the guiding groove 6 is used for limiting the grille arch 21 to prevent the left and right movement of the grille arch 21. The cooperation of the two guiding grooves 6 can also play a role in guiding the placement of the grille arch 21 to prevent the grille arch 21 from rotating; the bottom plate 5 is used for connecting with the support platform 1, and the force on the limiting plate 4 will be transmitted to the bottom plate 5 and then transmitted to the support platform 1 by the bottom plate 5. The area of the bottom plate 5 is large, the force is dispersed, and the support performance is better; the reinforcing plate 7 can improve the structural strength between the limiting plate 4 and the bottom plate 5 and bear a greater weight.

[0037] To make the bottom plate 5 reliable, the bottom plate 5 includes a cross plate 8 and a vertical plate 9. The top of the vertical plate 9 is connected to the middle of the cross plate 8, and the whole is in a T shape; the bottom of the limiting plate 4 is connected to the cross plate 8; cross bars 10 are provided at both ends of the support platform 1, and the cross bars 10 are matched with the cross plate 8; the cross bars 10 extend out of the side surface of the support platform 1, and a rod 15 is arranged between the two cross bars 10, and the cross bars 10 can also play a role in protecting the rod 15.

[0038] To facilitate connection, one side of the cross plate 8 is connected to the cross bar 10 through a fixing pin 11, and the side of the vertical plate 9 away from the cross plate 8 is connected to the support platform 1 through a fixing pin 11. In this embodiment, a first pin hole 18 is provided on one side of the cross plate 8, and a second pin hole 19 is provided on the side of the vertical plate 9 away from the cross plate 8. The two fixing pins 11 are respectively on the cross plate 8 and the vertical plate 9, and the fixing effect of the limiting device 3 is good. One of the fixing pins 11 is on the cross plate 8, which is convenient for lateral support and has a good lateral support for the grille arch 21.

[0039] To make the grasping reliable, the rod 15 is rotatably connected to the support platform 1 through a connecting seat 14. The connecting seats 14 are arranged on both sides of the support platform 1 and fixedly connected to the support platform 1, and the rod 15 is hinged to the connecting seat 14; a clamping oil cylinder 13 is further included. Both ends of the clamping oil cylinder 13 are respectively hinged to the bottoms of the rods 15 on both sides; the clamping oil cylinder 13 can drive the two rods 15 to open and close. A connecting plate 20 is provided between the connecting seats 14 on both sides, and the connecting seats 14 on both sides and the connecting plate 20 are an integral whole with high overall strength.

[0040] To make the opening of the chuck 16 reliable, a limiting rod 25 is provided on the connecting seat 14, and in the open state of the chuck 16, the rod 15 abuts against the limiting rod 25.

[0041] To ensure reliable closing of the chuck 16, limiting blocks 26 are provided on both sides of the support platform 1. In the closed state of the chuck 16, the rod 15 abuts against the limiting blocks 26.

[0042] For the convenience of installation, a hinge seat 17 is provided at one end of the support platform 1. The hinge seat 17 is used to connect with the boom of the engineering trolley. The design of the hinge seat 17 facilitates the installation and connection between the support platform 1 and the engineering trolley.

[0043] Embodiment 3:

[0044] A grasping fixture provided in this embodiment, as Figure 7 shown, includes a support platform 1 and a detachable jaw structure. The jaw structure is connected to the support platform 1. The jaw structure is used for switching between grasping the grid arch or the I-beam. The support platform 1 is used to provide an installation position. The jaw structure in this embodiment is different from that in Embodiment 2 and is applicable to the I-beam.

[0045] To ensure the reliability of the jaw structure, the jaw structure is integrated with high structural strength. By replacing the entire jaw machine structure of different types, it can be adapted to grasp the grid arch or the I-beam.

[0046] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A jaw structure for arch frame grasping, characterized in that, It includes a rod member (15) and a chuck (16). The chuck (16) is connected to the rod member (15), and the chuck (16) is detachable relative to the rod member (15).

2. The jaw structure for arch frame grasping according to claim 1, characterized in that: One of the chuck (16) or the rod member (15) is provided with a clamping groove (22), and the other is provided with a clamping block (23) that cooperates with the clamping groove (22); at least a pair of mutually abutting planes are provided between the clamping groove (22) and the clamping block (23); the rod member (15) and the chuck (16) are connected by a pin shaft (24).

3. The jaw structure for arch frame grasping according to claim 1, characterized in that: The rod member (15) is integrally arc-shaped; the cross-sectional area of the end of the chuck (16) gradually decreases or gradually increases from the side close to the rod member (15) to the side far from the rod member (15).

4. A grasping fixture, characterized in that, It includes a support platform (1) and a detachable claw structure. The claw structure is connected to the support platform (1), and the claw structure is used for switching between grasping a grid arch or grasping an I-beam. The support platform (1) is used to provide an installation position.

5. The gripping fixture according to claim 4, characterized in that: The claw structure is integral.

6. The gripping fixture according to claim 4, characterized in that: The claw structure is a claw structure for arch grasping as described in any one of claims 1-3; the rod member (15) is arranged on both sides of the support platform (1) and is rotatably connected to the support platform (1); the clamping directions of the two chucks (16) face the vertical plane where the support platform (1) is located.

7. The grasping fixture according to claim 4, characterized in that: It further includes a limiting device (3). The limiting device (3) is used for limiting the arch. The limiting device (3) is detachably connected to the support platform (1) through a pin structure; the limiting device (3) is arranged left and right relative to the support platform (1).

8. The grasping fixture according to claim 7, characterized in that: The limiting device (3) includes a limiting plate (4) and a bottom plate (5). The limiting plate (4) and the bottom plate (5) are arranged perpendicular to each other; the bottom plate (5) is attached to the upper surface of the support platform (1); a guiding groove (6) is provided on the limiting plate (4), and the connection line between the two guiding grooves (6) is parallel to the length direction of the support platform (1); a reinforcing plate (7) is provided between the limiting plate (4) and the bottom plate (5).

9. The grasping fixture according to claim 8, characterized in that: The bottom plate (5) includes a cross plate (8) and a vertical plate (9). The top of the vertical plate (9) is connected to the middle of the cross plate (8), and the whole is in a T shape; cross bars (10) are provided at both ends of the support platform (1), and the cross bars (10) cooperate with the cross plate (8); the rod member (15) is arranged between the two cross bars (10); one side of the cross plate (8) is connected to the cross bar (10) through a fixing pin (11), and the side of the vertical plate (9) away from the cross plate (8) is connected to the support platform (1) through a fixing pin (11).

10. The grasping fixture according to claim 6, characterized in that: The rod member (15) is rotatably connected to the support platform (1) through a connecting seat (14). The connecting seat (14) is arranged on both sides of the support platform (1) and is fixedly connected to the support platform (1). The rod member (15) is hinged to the connecting seat (14); it further includes a clamping oil cylinder (13). The two ends of the clamping oil cylinder (13) are respectively hinged to the bottoms of the rod members (15) on both sides; the clamping oil cylinder (13) can drive the two rod members (15) to open and close; a limiting rod (25) is provided on the connecting seat (14). In the open state of the chuck (16), the rod member (15) abuts against the limiting rod (25).

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