Anchoring rod trolley front end self-centering drill rod clamping device

Abstract

The utility model discloses a kind of anchor rod jumbo front end self-centering clamping device, including front end clamping device, guide beam, clamping arm, hinged support, clamping cylinder, chuck and relevant connecting components.The clamping arm is symmetrically arranged at the both sides of guide beam, and is rotatably connected with hinged support by hinged pin shaft;Clamping cylinder adopts double piston rod double-acting structure, and its piston rod is hinged with clamping arm by oil cylinder pin shaft, drives clamping arm to rotate around pin shaft, realizes the clamping or loosening of drill rod.The front end of clamping arm is installed replaceable chuck, to adapt to different specifications of drill rod.The device keeps symmetrical action in clamping and opening process on both sides, to realize the self-centering clamping of anchor rod, prevent bending and shaking, guarantee rod and drilling precision.The device has the advantages of small structure, large opening distance, high clamping precision, and is suitable for efficient construction of anchor rod jumbo.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt trolley grouting machine technology, and in particular to a self-centering clamping device at the front end of an anchor bolt trolley. Background Technology

[0002] Anchor bolt trolleys are essential equipment commonly used in underground engineering construction such as tunnel excavation and underground powerhouse excavation. They can perform various operations including blasting drilling, anchor bolt drilling, grouting, and exploratory drilling. However, self-propelled anchor bolt trolleys typically require manual operation for bolt extension and retraction during construction. Furthermore, after the anchor bolts are installed, there is often a problem of excessively long exposed bolts requiring secondary treatment before laying waterproofing fabric. This not only increases the number of construction steps but also reduces operational efficiency.

[0003] Existing anchor clamping devices have several shortcomings in practical applications. First, their clamping accuracy is low, easily causing bending and swaying of the anchor bolt during the connection process, affecting construction quality and connection accuracy. Second, traditional anchor clamping devices have poor adaptability, typically only suitable for anchor bolts of a specific diameter, making it difficult to accommodate anchor bolts of multiple specifications. Third, some anchor clamping devices are bulky, occupying a large space, and have limited opening distances, easily interfering with the anchor bolt pads during construction, causing installation inconvenience. Finally, existing devices have a low degree of automation; clamping and opening operations rely on complex mechanisms or manual operation, hindering efficient construction processes.

[0004] Therefore, there is an urgent need to provide a clamping device that is compact, has a large opening distance, high clamping accuracy, and can automatically achieve self-centering action, so as to meet the high-efficiency construction needs of anchor bolt trolleys under complex working conditions. Utility Model Content

[0005] The purpose of this invention is to provide a self-centering clamping device at the front end of an anchor bolt trolley. By improving the structure of the clamping mechanism, it achieves a larger opening distance while maintaining a compact overall size, thus adapting to anchor bolts of different diameters and types.

[0006] This utility model is achieved using the following technical solution: a self-centering clamping device at the front end of an anchor bolt trolley, characterized in that it includes a front clamping device, a guide beam, and a rod; the front clamping device is symmetrically arranged along the center plane of the guide beam, with clamping arms and hinged supports respectively provided on the left and right sides; a chuck is installed at the front end of the clamping arm, and the chuck is fixed to the clamping arm by countersunk screws; the hinged support is fixed to the guide beam by mounting nuts and mounting bolts, and the clamping arm is rotatably connected to the hinged support by a hinged pin; the clamping arm is driven by a clamping cylinder to achieve clamping and opening actions, so as to clamp or release the rod.

[0007] Furthermore, a copper sleeve is provided in the pin hole of the clamping arm, and the hinge pin is inserted into the copper sleeve, thereby improving the rotational flexibility and wear resistance between the clamping arm and the hinge support.

[0008] Furthermore, the hinge support is provided with a limit screw. By adjusting the length of the limit screw, the rotation angle of the clamping arm is limited, thereby limiting the opening and closing range of the front clamping device.

[0009] Furthermore, the clamping cylinder is a double-piston rod double-acting cylinder, which is fixed to the mounting plate by countersunk screws, and the mounting plate is fixedly connected to the guide beam by mounting bolts.

[0010] Furthermore, the piston rod of the clamping cylinder is hinged to the clamping arm at both ends by a cylinder pin, and a retaining ring is installed at the tail of the cylinder pin to prevent the cylinder pin from coming out.

[0011] Furthermore, the clamping arm is provided with a waist-shaped groove, and the cylinder pin slides in the waist-shaped groove, thereby driving the clamping arm to rotate around the hinge pin, so as to clamp or release the drill rod.

[0012] Furthermore, the chuck can be replaced according to the diameter of the drill rod to adapt to different specifications of drill rods, and is fixed to the front end of the clamping arm by countersunk screws.

[0013] The self-centering clamping device at the front end of the anchor trolley described in this utility model has the following advantages:

[0014] The device employs symmetrically arranged clamping arms and a dual-piston rod hydraulic cylinder drive system, ensuring the symmetry of the clamping action and achieving automatic centering and self-centering of the anchor bolt. This significantly improves clamping accuracy and effectively avoids bending and swaying caused by uneven force during construction.

[0015] The clamp is designed as a replaceable structure, which can be flexibly adjusted according to anchor bolts of different diameters, and has good adaptability, which can meet the construction requirements of various specifications of anchor bolts.

[0016] The device has a compact overall structure and small size, and has a large opening distance, which allows the anchor rod and anchor plate to pass smoothly through the clamping mechanism without interference, further improving the continuity and convenience of the construction process.

[0017] The clamping and opening actions can be completed automatically at any position, reducing reliance on manual operation, simplifying the construction process, and significantly improving construction efficiency. At the same time, the device has a reasonable structure, highly interchangeable parts, and low manufacturing and maintenance costs, making it economically viable and worthy of widespread application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the installation of a self-centering clamping device at the front end of an anchor bolt trolley;

[0020] Figure 2 A front view of a self-centering clamping device at the front end of an anchor bolt trolley;

[0021] Figure 3 A side view of a self-centering clamping device at the front end of an anchor bolt trolley;

[0022] In the diagram, 1-front end clamping device, 2-mounting nut, 3-guide beam, 4-chisel rod, 101-clamping arm, 102-hinged support, 103-hinged pin, 104-limiting screw, 105-copper sleeve, 106-clamping cylinder, 107-shaft retaining ring, 108-cylinder pin, 109-mounting plate, 110-mounting bolt, 111-countersunk screw one, 112-clamp, 113-countersunk screw two. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example

[0025] like Figure 1-3As shown, a self-centering clamping device at the front end of an anchor bolt trolley includes a front clamping device 1, a mounting nut 2, a guide beam 3, a drill rod 4, a clamping arm 101, a hinge support 102, a hinge pin 103, a limit screw 104, a copper sleeve 105, a clamping cylinder 106, a shaft retaining ring 107, a cylinder pin 108, a mounting plate 109, a mounting bolt 110, a countersunk screw 111, a chuck 112, and a countersunk screw 113.

[0026] Specifically, the front-end clamping device 1 is symmetrically arranged along the center plane of the guide beam 3, with clamping arms 101 and hinged supports 102 respectively on the left and right sides. A chuck 112 is installed at the front end of the clamping arm 101, and the chuck 112 is fixed to the clamping arm body by countersunk screws 113. The chuck 112 can be replaced according to the diameter of the drill rod 4. The hinged support 102 is fixed to the guide beam 3 by mounting nuts 2 and mounting bolts 110. The mounting plate 109 is also fixed to the guide beam 3 by mounting bolts 110. A copper sleeve 105 is installed in the pin hole of the clamping arm 101 and is connected to the hinged support 102 through a hinged pin 103 to achieve rotation. A limit screw 104 is provided on the hinged support 102; by adjusting its length, the rotation angle of the clamping arm 101 can be controlled, thereby limiting the opening and closing range of the device.

[0027] The clamping cylinder 106 is a double-piston rod double-acting cylinder, fixed to the mounting plate 109 by countersunk screws 111. Both ends of the piston rod of the cylinder 106 are hinged to the clamping arm 101 via cylinder pins 108. A retaining ring 107 is installed at the tail of the cylinder pin 108 to prevent it from disengaging. When the piston rod extends, the cylinder pin 108 slides along the slot of the clamping arm 101, causing the clamping arm 101 to rotate inward, thus clamping the chisel 4. When the piston rod retracts, the clamping arm 101 opens, thus disengaging the chisel 4.

[0028] During clamping and opening, the clamping arms 101 on both sides maintain symmetrical movement, thus ensuring the self-centering effect of the clamping position. During construction, the front clamping device 1 can clamp the first anchor rod, and work with the rock drill to rotate and connect the second anchor rod. After the anchor rod is installed, it can be released. The device has a compact overall structure, a large opening distance, and high clamping accuracy, which can effectively prevent the anchor rod from bending and shaking under force, meeting the needs of efficient construction of anchor rod trolleys.

[0029] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A self-centering clamping device at the front end of an anchor bolt trolley, characterized in that, The device includes a front-end clamping device (1), a guide beam (3), and a drill rod (4). The front-end clamping device (1) is symmetrically arranged along the center plane of the guide beam (3), with clamping arms (101) and hinged supports (102) respectively on the left and right sides. A chuck (112) is installed at the front end of the clamping arm (101), and the chuck (112) is fixed to the clamping arm (101) by countersunk screws (113). The hinged support (102) is fixed to the guide beam (3) by mounting nuts (2) and mounting bolts (110), and the clamping arm (101) is rotatably connected to the hinged support (102) by hinge pins (103). The clamping arm (101) is driven by a clamping cylinder (106) to achieve clamping and opening actions, so as to clamp or release the drill rod (4).

2. The self-centering clamping device at the front end of the anchor bolt trolley according to claim 1, characterized in that, A copper sleeve (105) is provided in the pin hole of the clamping arm (101), and the hinge pin (103) is inserted into the copper sleeve (105).

3. The self-centering clamping device at the front end of the anchor bolt trolley according to claim 1, characterized in that, The hinge support (102) is provided with a limit screw (104). By adjusting the length of the limit screw (104), the rotation angle of the clamping arm (101) is limited, thereby limiting the opening and closing range of the front clamping device (1).

4. The self-centering clamping device at the front end of the anchor bolt trolley according to claim 1, characterized in that, The clamping cylinder (106) is a double piston rod double-acting cylinder, which is fixed to the mounting plate (109) by countersunk screw (111), and the mounting plate (109) is fixedly connected to the guide beam (3) by mounting bolt (110).

5. The self-centering clamping device at the front end of the anchor bolt trolley according to claim 1, characterized in that, The piston rod of the clamping cylinder (106) is hinged to the clamping arm (101) at both ends by a cylinder pin (108). The tail of the cylinder pin (108) is equipped with a shaft retaining ring (107) to prevent the cylinder pin (108) from coming out.

6. The self-centering clamping device at the front end of the anchor bolt trolley according to claim 5, characterized in that, The clamping arm (101) is provided with a waist-shaped groove, and the cylinder pin (108) slides in the waist-shaped groove, thereby driving the clamping arm (101) to rotate around the hinge pin (103) to clamp or release the drill rod (4).

7. The self-centering clamping device at the front end of the anchor bolt trolley according to claim 1, characterized in that, The chuck (112) can be replaced according to the diameter of the drill rod (4) to adapt to different specifications of drill rod (4), and is fixed to the front end of the clamping arm (101) by countersunk screw two (113).

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