Electromagnetic clamp type falling protection and rod dismounting device

Abstract

The electromagnetic clamp type falling prevention and rod dismounting device comprises a male part of an upper part and a female part of a lower part; the male part is composed of two left and right electromagnets into a hollow conical column structure, is connected into a whole by a through pin and a spring, the internal hollow part is a cylinder, the inner wall of the male part is provided with rubber insulation material, and the outer surface of the male part is symmetrically and fixedly provided with a group of first tenons; the female part is a hollow cylindrical structure, the upper part of the hollow part is in an inverted conical column shape, the lower part is in a cylindrical shape, the outer surface of the cylindrical body is symmetrically and fixedly provided with a group of second tenons, the second tenons are provided with stable bolt holes, the inverted conical column shaped hollow inner wall is symmetrically provided with four grooves matched with the first tenons on the two sides of the male part, and the female part is installed on the machine head of a drilling machine through stable bolts. When used, after the male part and the female part are tightly engaged, the drilling rod can be prevented from falling, and when the drilling machine is reversed, the purpose of dismounting can be achieved, the safety risk is reduced, the labor intensity is reduced, and the construction efficiency is improved.

Description

Technical fields:

[0001] This invention relates to the technical field of anchoring construction and grouting construction, and particularly to the technical field of top arch anchoring upper hole construction and deep hole curtain construction. Specifically, it relates to an electromagnetic clamp type anti-fall rod unloading device. Background technology:

[0002] In engineering anchoring projects with complex geological conditions, large-tonnage prestressed anchor cables and foundation grouting are widely used in the reinforcement of complex geology and extra-large caverns. However, selecting high-quality construction equipment is crucial to ensuring construction quality and safety. Hydropower station underground powerhouses are typically "three-chamber structures," consisting of the main powerhouse, main transformer tunnel, and busbar tunnel. The anchoring and grouting work within the entire underground powerhouse is enormous, and naturally, extremely difficult, especially the overhead borehole construction and deep-hole curtain wall construction for the top arch anchoring. We commonly use down-the-hole drills and geological drills, but adding and removing drill rods can easily lead to safety accidents. In anchoring projects, when constructing overhead boreholes, the drill rods lack suitable support inside the hole when being lengthened or disassembled. Construction workers must solve this by adding auxiliary supports and installing shims on-site, which is labor-intensive and unsafe. Deep-hole curtain wall construction also uses shims to load and unload drill rods, similarly posing safety risks and being time-consuming and labor-intensive. Furthermore, with the increasing weight of the drill rod and environmental constraints, not only is there a safety threat to personnel, but if the drill rod slips inside the hole, it can damage construction equipment and other facilities. Therefore, using a drill bit is extremely dangerous.

[0003] For the reasons mentioned above, in order to improve construction quality and reduce engineering accidents, it is urgent to add a new type of device to the drilling rig that can easily add or remove drill rods. Summary of the Invention:

[0004] The technical problem to be solved by the present invention is to provide an electromagnetic clamp-type anti-fall rod unloading device. Through the function of this anti-fall rod unloading device, both safety and efficiency can be ensured in constructing upward holes or deep holes, and drill rods can be easily added or removed, thus solving the problem of drilling rigs constructing upward holes and loading and unloading drill rods.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides an electromagnetic clamp-type anti-fall rod release device, comprising two main parts: an upper male clamp and a lower female clamp, which are coaxially connected. The male clamp consists of two electromagnets forming a hollow conical cylindrical structure, which act as clamps. A pin and spring are inserted through a connecting port to form a single unit. The upper end of each electromagnet has an electromagnet lead-out terminal. The internal hollow portion is cylindrical. Rubber insulating material is provided on the inner wall of the male clamp. A set of... The first tenon; the female tool is a hollow cylindrical structure. The upper hollow part inside is inverted conical in shape to match the conical column of the male tool, and the lower hollow part is cylindrical. A set of second tenons is symmetrically fixed on the outside of the cylinder. The second tenons are provided with stabilizing bolt holes. The hollow inner wall of the inverted conical column of the female tool is symmetrically provided with four grooves that match the first tenons on both sides of the male tool. The female tool is installed on the head of the down-the-hole drill or fixed on the borehole pipe of the geological drilling rig by inserting stabilizing bolts through the stabilizing bolt holes.

[0007] The male clamp consists of two electromagnet clamps on the left and right sides. The hollow part is the space for loading and unloading the drill rod of the drilling machine. The size is determined by the size of the drill rod of the drilling machine. Multiple clamps that match the female clamp can be made according to the size of the drill rod.

[0008] The diameter of the cylindrical hollow portion on the female tool matches the diameter of the drill rod and the diameter of the cylindrical hollow portion inside the male tool.

[0009] The second tenon on the female tool has a Φ28 through hole for securing bolts.

[0010] The grooves symmetrically arranged on the female tool are offset from the second protruding tenon on the outside, forming a cross shape.

[0011] The female tool is made into multiple molds about 5cm from the lower end according to the pre-embedded device, and a locking hole is set at 2.5cm, which is then anchored with small screws.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This invention solves the problems of high labor intensity when unloading drill rods during drilling and the safety issues that easily arise from the removal and fixing of drill rods during drilling, thus improving construction efficiency. Once the male and female drill bits are tightly engaged, the drilling rig can be reversed to achieve disassembly, reducing labor intensity and auxiliary work time.

[0014] 2. This invention can be quickly installed on site, can be used for various models, and fully meets the working conditions of drilling rigs during construction.

[0015] 3. This invention is lightweight, occupies little space, uses simple materials, and is convenient and economical to produce. In special environments, this invention can be adjusted according to the size of the construction site to adapt to various drill rod lengths.

[0016] 4. This invention is not only applicable to upward hole construction to prevent drill rods from falling, but also applicable to other types of construction and drill rod loading and unloading. Attached image description:

[0017] Figure 1 This is a diagram showing the usage status of the present invention;

[0018] Figure 2 This is a front view of the male structure of the present invention;

[0019] Figure 3 This is a top view of the structure of the present invention;

[0020] Figure 4 This is a left view of the male structure of the present invention;

[0021] Figure 5 This is a front view of the female device structure of the present invention;

[0022] Figure 6 This is a top view of the female device structure of the present invention;

[0023] Figure 7 This is a left view of the female device structure of the present invention.

[0024] Figure label:

[0025] 1-Electromagnet lead-out end, 2-Connection port, 3-Spring, 4-First tenon, 5-Rubber insulating material, 6-Electromagnet, 7-Groove, 8-Second tenon, 9-Second bolt hole. Detailed implementation method:

[0026] The present invention will be further described below with reference to specific embodiments. See also... Figures 1 to 7 This invention provides an electromagnetic clamp-type anti-fall rod release device, which includes two main parts: the upper part is a male clamp (hereinafter collectively referred to as the male clamp), and the lower part is a female clamp (hereinafter collectively referred to as the female clamp). The male clamp and the female clamp are coaxially connected.

[0027] The male clamp is a hollow conical cylindrical structure composed of two electromagnets 6 on the left and right. These two electromagnets 6 act as clamps, connected by a connecting port 2 through a pin and a spring 3 to form a single unit. The upper end of each electromagnet 6 has an electromagnet output terminal 1. When energized, the two electromagnets 6 grip the drill rod; when de-energized, they release naturally. The hollow interior of the male clamp is cylindrical, serving as the male clamp guide hole. This hollow space is for loading and unloading the drill rod, and its size is determined by the size of the drill rod. Multiple clamps matching the female clamp can be manufactured to accommodate different drill rod sizes. The inner wall of the male clamp is wrapped and protected with rubber insulation material 5, ensuring electrical safety while increasing frictional resistance when clamping the drill rod. A set of first tenons 4 are symmetrically fixed on the outside of the male clamp for mounting and dismounting.

[0028] The female tool is a single, hollow cylindrical structure. Its upper hollow section is an inverted cone shape matching the male tool's conical shape, while its lower hollow section is cylindrical. The cylindrical hollow section serves as the female tool's guide hole. The diameter of this cylindrical hollow section matches both the drill rod diameter and the diameter of the cylindrical section within the male tool. A set of second tenons 8 are symmetrically fixed to the outside of the cylinder. Each second tenon 8 has a Φ28 through hole 9 for anchoring bolts. Four grooves 7 are symmetrically arranged on the inner wall of the female tool's inverted cone-shaped hollow section, matching the first tenons on both sides of the male tool. These symmetrically arranged grooves 7 are staggered from the outer second tenons 8, forming a cross shape. During operation, the grooves 7 engage with the first tenons 4 of the male tool. Multiple sets of molds can be fabricated approximately 5cm from the lower end of the female tool according to the pre-embedded device. A locking hole is located at 2.5cm, allowing for anchoring with small screws.

[0029] When using, install the female tool on the head of the down-the-hole drill or fix it on the borehole pipe of the geological drilling rig. Insert the stabilizing bolt into the stabilizing bolt hole 9 and tighten the stabilizing bolt. The female tool is now installed. Open the male tool clamp and insert it into the drill rod. Connect the power supply and it is ready to use (Note: The voltage of the electromagnet must not exceed 36V).

[0030] The working principle of this anti-fall rod unloading device:

[0031] Once the male and female fittings of the fall arrestor are installed, it is ready for use. During use, align the first tenon 4 of the male fitting with the groove 7 of the female fitting to create an engagement when disassembling the drill rod. On one hand, when the electromagnet 6 is energized, the male fitting grips the drill rod tightly, and the drill rig pulls the drill rod back, strengthening the engagement between the male and female fittings. On the other hand, the drill rod falls due to its own weight, making the male and female fittings even more tightly connected. The electromagnet 6 heats up during energization, and as the temperature rises, the insulating rubber material 5 naturally expands, increasing the gripping force. Because the male fitting is cone-shaped, like a prestressed gripping clamp, it tightens further under tension, becoming even more secure. With the male and female fittings working together, and the drill rig reversed, the drill rod can be disassembled.

[0032] This anti-fall rod unloading device fully utilizes the two principles of electric energy magnetization and gripping clamps to complete the tasks of fixing the drill rod in the upward hole to prevent it from slipping, as well as loading and unloading the drill rod during the construction of upward holes and deep holes.

[0033] The method of using this electromagnetic clamp-type anti-fall rod device is as follows:

[0034] The first step is the installation of the female tool, which is crucial for ensuring normal operation. The female tool can be installed directly on the machine head. If the working hole is a downward-sloping hole, simply anchor the female tool firmly to the ground.

[0035] The second step is the installation of the drilling tool. The power supply for the drilling tool has a separate switch on the drilling rig, and a voltage regulator is installed. The operating voltage should be below 36V.

[0036] The third step is to accurately calibrate the female and male fittings to form a complete electromagnetic clamp-type anti-fall rod assembly. The male fitting can be fixed in position as needed, or it can be left unfixed, but when fixed, the tenon of the male fitting must be aligned with the groove of the female fitting, and the guide hole of the female fitting, the guide hole of the male fitting, and the drill rod must be on the same axis.

[0037] The fourth step involves using the electromagnetic clamp-type anti-fall rod unloader. During construction, if the drill rod needs to fall or be unscrewed, simply place the male clamp onto the drill rod, turn on the power, and the two clamps on the left and right sides of the male clamp will naturally close, aligning the male clamp's tenon with the female clamp's groove and locking it in place, thus achieving the function of preventing fall or unloading the rod.

[0038] It should be noted that the above description is merely an illustration of some principles of the present invention. Since it is easy for those skilled in the art to make modifications and alterations based on this, this specification is not intended to limit the invention to the specific structures and applications shown and described. Therefore, all possible modifications and equivalents fall within the scope of the patent claims made in this invention.

Claims

1. An electromagnetic clamp-type anti-fall rod release device, characterized in that: The fall arrestor consists of two parts: the upper part is the male part and the lower part is the female part. The male and female parts are coaxially connected. The male part is composed of two electromagnets (6) forming a hollow conical structure. The two electromagnets (6) are clamps, which are connected as a whole by a pin and a spring (3) through the connection port (2). The upper end of the electromagnet (6) is connected to the electromagnet output terminal (1). The hollow part inside is cylindrical. The inner wall of the male part is provided with rubber insulating material (5). A set of first tenons (4) are symmetrically fixed on the outside of the male part. The female tool is a hollow cylindrical structure. The upper hollow part inside is inverted conical column shape matching the conical column of the male tool, and the lower hollow part is cylindrical. A set of second tenons (8) are symmetrically fixed on the outside of the cylinder. The second tenon (8) is provided with a stabilizing bolt hole (9). The hollow inner wall of the inverted conical column of the female tool is symmetrically provided with four grooves (7) matching the first tenons (4) on both sides of the male tool. The female tool is installed on the head of the downhole drill or fixed on the borehole pipe of the geological drilling rig by inserting the stabilizing bolt into the stabilizing bolt hole (9).

2. The electromagnetic clamp type anti-fall rod unloading device according to claim 1, characterized in that: The male clamp consists of two electromagnet clamps on the left and right sides. The hollow part is the space for loading and unloading the drill rod of the drilling machine. The size is determined by the size of the drill rod of the drilling machine. Multiple clamps that match the female clamp can be made according to the size of the drill rod.

3. The electromagnetic clamp type anti-fall rod unloading device according to claim 1, characterized in that: The diameter of the cylindrical hollow portion on the female tool matches the diameter of the drill rod and the diameter of the cylindrical hollow portion inside the male tool.

4. The electromagnetic clamp type anti-fall rod unloading device according to claim 1, characterized in that: The stabilizing bolt hole (9) provided on the second tenon (8) on the female tool is a Φ28 through hole.

5. The electromagnetic clamp type anti-fall rod unloading device according to claim 1, characterized in that: The grooves (7) symmetrically arranged on the female tool are offset from the second protruding tenon (8) on the outside, and cross each other.

6. The electromagnetic clamp type anti-fall rod unloading device according to claim 1, characterized in that: Multiple molds are made at the lower end of the female tool 5cm from the pre-embedded device, and a locking hole is provided at 2.5cm for anchoring with small screws.

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