Shallow hole stem puller

Abstract

The utility model relates to the technical field of shallow hole pulling rods, in particular to a shallow hole pulling rod device which comprises a clamping plate piece, a groove is formed in the middle of the lower end of the clamping plate piece, short rods are fixed to the two sides of the lower end of the clamping plate piece, and the groove is located between the two short rods. Round pipe fittings are fixed to the two sides of the upper end of the plate clamping piece, positioning mechanisms are arranged on the round pipe fittings, sleeves are installed in the round pipe fittings in a sliding mode, and the positioning mechanisms are connected with the sleeves. According to the drill rod puller, the groove can be clamped into the upper end of a corresponding drill rod, meanwhile, the groove can abut against the upper end of the movable plate and the upper end of the drill rod according to needs, the position relation between the sleeve and the plate clamping piece is adjusted, the labor intensity of workers can be reduced conveniently, the two workers can hold the handles of the drill rod puller respectively, and the drill rod can be twisted by exerting force in the opposite directions; and when the drill rod is loosened until the drill rod can move upwards, the drill rod can be lifted upwards with force by two persons at the same time.

Description

Technical Field

[0001] This utility model relates to the field of shallow hole rod pulling technology, and in particular to a shallow hole rod pulling device. Background Technology

[0002] Drill rod jamming is a common malfunction in drilling or rock drilling operations, referring to the phenomenon where the drill rod or drill string gets stuck during drilling for some reason, preventing it from being advanced or withdrawn normally. This situation may lead to equipment damage, project delays, and even safety accidents, requiring timely handling.

[0003] Existing technologies can also achieve rod removal through mechanical vibration, hydraulic rod removal systems, chemical unlocking, and auxiliary tool processing. However, in actual operation:

[0004] Mechanical vibration method: secondary damage to the drill rod may cause the drill rod to bend and deform, making it unusable; high-frequency vibration may cause the drill rod threads to loosen or fatigue fracture, especially when the drill rod is already worn, the risk is higher.

[0005] Hydraulic drill bit extraction system: High equipment dependence. It requires a high-power hydraulic system on the drilling rig; older or smaller equipment may not be able to support it, limiting the success rate. If the drill bit is severely stuck (e.g., the drill bit is encased in rock), hydraulic pulling alone is insufficient to release it.

[0006] Chemical de-scraping: Corrosion and safety. Strong acids or surfactants can corrode drill pipes and rig components, and improper operation can easily lead to personnel poisoning or environmental pollution. Poor formation adaptability; when operating in fractured formations, chemicals may seep into the rock mass and pollute groundwater.

[0007] Auxiliary tool handling: Casing wall protection is costly. Casing requires continuous monitoring, significantly increasing material and time costs, resulting in poor economic efficiency. Localized blasting carries a high risk; small-dose blasting may cause borehole wall collapse or damage to adjacent boreholes, requiring strict safety control.

[0008] The above solutions are not applicable to shallow holes, so improvements are needed. Utility Model Content

[0009] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a shallow hole rod puller.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A shallow hole rod puller includes a retaining plate, a groove is formed in the middle of the lower end of the retaining plate, and short rods are fixed on both sides of the lower end of the retaining plate, with the groove located between the two short rods;

[0012] Both sides of the upper end of the card plate are fixed with round tubes, and the round tubes are provided with positioning mechanisms. A sleeve is slidably installed inside the round tubes, and the positioning mechanism is connected to the sleeve.

[0013] A support mechanism is installed at the upper middle part of the card plate, and the support mechanism is connected to two sleeves;

[0014] A sliding opening is provided on one side of the groove, and an abutment limiting mechanism is provided inside the sliding opening. A movable plate is provided on the abutment limiting mechanism, and one side of the movable plate is flush with the side wall inside the groove.

[0015] Compared with the prior art, this application can insert the groove into the upper end of the corresponding drill rod, and at the same time, it can make the groove abut against the upper end of the moving plate and the drill rod as needed, and adjust the positional relationship between the sleeve and the clamping plate, which can reduce the labor intensity of the workers. Two workers can hold the handle of the rod puller and apply force in opposite directions to twist the drill rod to loosen it. When the drill rod is loosened to the point that it can be moved upward, the two people can pull it upward at the same time.

[0016] Preferably, the positioning mechanism includes a positioning bolt installed on a round tube, the positioning bolt being threaded onto the round tube, and the tube having multiple positioning holes spaced at equal intervals, with one end of the positioning bolt extending into the corresponding positioning hole.

[0017] Furthermore, controlling the rotation and direction of the positioning bolt can control the positional relationship between the positioning bolt and the sleeve, adjust the positional relationship between the sleeve and the clamping plate according to the actual situation, and allow the positioning bolt to be inserted into the positioning hole located in the round tube to fully fix the position of the sleeve.

[0018] Preferably, the support mechanism includes a fixing frame fixed to the middle of the upper end of the card plate, a horizontal shaft passing through the fixing frame, and two ends of the horizontal shaft extending into two sleeves respectively, the sleeves being slidably mounted on the horizontal shaft.

[0019] Furthermore, the horizontal axis can effectively support the casing, ensuring that the external force borne by the casing can be fully applied to the clamping plate, which in turn drives the drill rod to rotate.

[0020] Preferably, the abutment limiting mechanism includes a fixing screw fixed to the sliding opening, a positioning plate fixed to one end of the fixing screw near the groove, a movable plate passing through the fixing screw, the two ends of the movable plate abutting against the top and bottom of the sliding opening respectively, a movable groove being formed at one end of the movable plate near the groove, an insertion interface being formed in the middle of the movable groove, the fixing screw passing through the insertion interface, and the positioning plate being located in the movable groove.

[0021] A nut is threaded onto the fixing screw, and the outer diameter of the nut is greater than the height of the insertion interface.

[0022] Furthermore, by controlling the positional relationship between the moving plate and the through-hole, the moving plate can be moved into the sliding opening, making it easier to align one side of the moving plate with the inner wall of the groove, increasing the contact area between the moving plate and the drill rod, thus enabling more efficient force transmission and facilitating the twisting of the drill rod.

[0023] Preferably, one side of the positioning disk is flush with the inner wall of the groove, and the thickness of the positioning disk is the same as the depth of the moving groove.

[0024] Furthermore, the positioning plate effectively limits the moving plate, preventing it from detaching from the fixing screw.

[0025] Preferably, a lifting plate is slidably installed on one end sidewall of the groove, the lifting plate is located at the lower end of the sliding opening, and the lifting plate is flush with the sidewall of the groove.

[0026] Furthermore, the sidewalls inside the groove can be sealed by the lifting plate, fully contacting the drill rod, so that it can be used with the moving plate to accommodate drill rods of various specifications.

[0027] The beneficial effects of this utility model are:

[0028] 1. During use, the operator can align the chisel with the groove and select the position of the lifting plate and the moving plate as needed, so that the moving plate can contact the chisel, which can expand the range of applicable chisel specifications and ensure the firmness of the contact with the chisel so as to apply external force;

[0029] 2. The positional relationship between the sleeve and the clamping plate can be controlled by the positioning bolt, which facilitates the adjustment of the lever arm length. Moreover, it can be adjusted according to the surrounding environment, increasing the lever arm length while adapting to the environment, which helps to reduce the labor intensity of the workers.

[0030] 3. When the drill rod is twisted, the clamping plate can be driven by the sleeve to pull out the drill rod. Attached Figure Description

[0031] Figure 1 This is a structural diagram of the present invention;

[0032] Figure 2 This utility model Figure 1 A magnified view of a portion of the image;

[0033] Figure 3 This is a structural diagram showing the connection between the fixing screw, nut, and positioning plate in this utility model.

[0034] Figure 4 This is a structural diagram of the movable plate in this utility model;

[0035] In the diagram: 1. Card plate, 2. Round tube, 3. Short rod, 4. Positioning bolt, 5. Positioning hole, 6. Fixing frame, 7. Horizontal shaft, 8. Sleeve, 9. Groove, 10. Through port, 11. Sliding port, 12. Fixing screw, 13. Nut, 14. Moving plate, 15. Moving groove, 16. Insertion interface, 17. Positioning plate, 18. Lifting plate. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0037] Reference Figure 1-4 A shallow-hole rod puller includes a retaining plate 1. A groove 9 is formed in the middle of the lower end of the retaining plate 1. One end of the groove 9 is semi-circular, and the semi-circular end of the groove fully abuts against the upper end of the rod. Short rods 3 are fixed to both sides of the lower end of the retaining plate 1, and the groove 9 is located between the two short rods 3. In use, the operator inserts the groove 9 into the upper end of the rod so that the groove 9 abuts against the upper end of the rod, facilitating the application of external force to the rod and twisting it.

[0038] Reference Figure 1-4 Both sides of the upper end of the clamping plate 1 are fixed with round tubes 2. The round tubes 2 are equipped with positioning mechanisms, and sleeves 8 are slidably installed inside the round tubes 2. The positioning mechanisms are connected to the sleeves 8. The positioning mechanisms can control the positional relationship between the sleeves 8 and the clamping plate 1, which helps to control the lever arm length and can be adjusted according to the site conditions, thereby reducing the labor intensity of the workers while adapting to the site environment.

[0039] Reference Figure 1-4 A support mechanism is installed at the upper middle part of the clamping plate 1, and the support mechanism is connected to two sleeves 8. The support mechanism can fully ensure the stability of the sleeves 8 and facilitate the application of force to the clamping plate 1. A sliding opening 11 is provided on one side of the groove 9, and an abutment limiting mechanism is provided in the sliding opening 11. A moving plate 14 is provided on the abutment limiting mechanism, and one side of the moving plate 14 is flush with the side wall of the groove 9. By controlling the position of the moving plate 14, it can be made to abut against the side wall of the upper end of the drill rod, so that the moving plate 14 can fully transmit the external force to the drill rod, causing the drill rod to be twisted for lifting.

[0040] Reference Figure 1The positioning mechanism includes a positioning bolt 4 mounted on the round tube 2. The positioning bolt 4 is threaded onto the round tube 2. Multiple positioning holes 5 are evenly spaced on the sleeve 8, and one end of the positioning bolt 4 extends into the corresponding positioning hole 5. Controlling the rotation and direction of the positioning bolt 4 controls the positional relationship between the positioning bolt 4 and the sleeve 8. The positional relationship between the sleeve 8 and the clamping plate 1 can be adjusted according to actual conditions, and the positioning bolt 4 can be inserted into the positioning hole 5 located in the round tube 2 to fully fix the position of the sleeve 8.

[0041] Reference Figure 1 The support mechanism includes a fixing frame 6 fixed to the middle of the upper end of the clamping plate 1. A horizontal shaft 7 is inserted through the fixing frame 6, and both ends of the horizontal shaft 7 extend into two sleeves 8, which are slidably mounted on the horizontal shaft 7. The horizontal shaft 7 effectively supports the sleeves 8, ensuring that the external force borne by the sleeves 8 can be fully applied to the clamping plate 1, and facilitating the rotation of the drill rod by the clamping plate 1.

[0042] Reference Figure 1-4 The contact limiting mechanism includes a fixing screw 12 fixed to the sliding opening 11. A positioning plate 17 is fixed to one end of the fixing screw 12 near the groove 9. A movable plate 14 is provided through the fixing screw 12. The two ends of the movable plate 14 abut against the top and bottom of the sliding opening 11, respectively. A movable groove 15 is formed at one end of the movable plate 14 near the groove 9. An insertion interface 16 is formed in the middle of the movable groove 15. The fixing screw 12 is disposed through the insertion interface 16, and the positioning plate 17 is located in the movable groove 15. By controlling the positional relationship between the movable plate 14 and the through opening 10, the movable plate 14 can be moved into the sliding opening 11, so that one side of the movable plate 14 is flush with the inner wall of the groove 9, so that the movable plate 14 abuts against the drill rod, increasing the contact area, enabling force transmission, and facilitating the twisting of the drill rod.

[0043] A nut 13 is threaded onto the fixing screw 12, and the outer diameter of the nut 13 is larger than the height of the insertion interface 16. The nut 13 can fully abut against the moving plate 14, and together with the positioning plate 17, it can effectively clamp the position of the moving plate 14.

[0044] Reference Figure 1-2 The positioning plate 17 is flush with the inner wall of the groove 9 on one side, and the thickness of the positioning plate 17 is the same as the depth of the moving groove 15. The positioning plate 17 effectively limits the moving plate 14, preventing the moving plate 14 from detaching from the fixing screw 12.

[0045] Reference Figure 1-2A lifting plate 18 is slidably installed on one side wall of the groove 9. The lifting plate 18 is located at the lower end of the sliding opening 11 and is flush with the side wall of the groove 9. The lifting plate 18 blocks the side wall of the groove 9, ensuring full contact with the drill rod, so as to cooperate with the moving plate 14 to accommodate drill rods of various specifications.

[0046] When using this utility model, the operator aligns the drill rod with the groove 9 and can select the positions of the lifting plate 18 and the moving plate 14 as needed, so that the moving plate 14 can contact the drill rod, which can expand the range of applicable drill rod specifications and ensure the firmness of the contact with the drill rod so as to apply external force.

[0047] The positional relationship between the sleeve 8 and the clamping plate 1 can be controlled by the positioning bolt 4, which facilitates the adjustment of the lever arm length and allows for adjustment according to the surrounding environment. This increases the lever arm length while adapting to the environment, helping to reduce the labor intensity of workers. When the drill rod is twisted, the clamping plate 1 can be driven by the sleeve 8 to pull out the drill rod.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A shallow hole rod puller, comprising a retaining plate (1), characterized in that: The lower end of the card plate (1) is provided with a groove (9), and short rods (3) are fixed on both sides of the lower end of the card plate (1). The groove (9) is located between the two short rods (3). Both sides of the upper end of the card plate (1) are fixed with round tubes (2), and the round tubes (2) are provided with positioning mechanisms. A sleeve (8) is slidably installed inside the round tubes (2), and the positioning mechanism is connected to the sleeve (8). A support mechanism is installed at the upper middle part of the card plate (1), and the support mechanism is connected to two sleeves (8); A sliding opening (11) is provided on one side of the groove (9), and an abutment limiting mechanism is provided in the sliding opening (11). A moving plate (14) is provided on the abutment limiting mechanism, and one side of the moving plate (14) is flush with the side wall inside the groove (9).

2. The shallow hole rod puller according to claim 1, characterized in that: The positioning mechanism includes a positioning bolt (4) installed on a round tube (2). The positioning bolt (4) is threaded onto the round tube (2). The sleeve (8) has multiple positioning holes (5) at equal intervals. One end of the positioning bolt (4) extends into the corresponding positioning hole (5).

3. A shallow-hole rod puller according to claim 1, characterized in that: The support mechanism includes a fixed frame (6) fixed at the middle of the upper end of the card plate (1), a horizontal shaft (7) is provided through the fixed frame (6), and the two ends of the horizontal shaft (7) extend into two sleeves (8) respectively, and the sleeves (8) are slidably installed on the horizontal shaft (7).

4. A shallow-hole rod puller according to claim 1, characterized in that: The contact limiting mechanism includes a fixing screw (12) fixed to the sliding opening (11). A positioning plate (17) is fixed to one end of the fixing screw (12) near the groove (9). A moving plate (14) is provided through the fixing screw (12). The two ends of the moving plate (14) abut against the top and bottom of the sliding opening (11) respectively. A moving groove (15) is provided at one end of the moving plate (14) near the groove (9). An insertion interface (16) is provided in the middle of the moving groove (15). The fixing screw (12) is provided through the insertion interface (16). The positioning plate (17) is located in the moving groove (15). A nut (13) is threaded onto the fixing screw (12), and the outer diameter of the nut (13) is greater than the height of the insertion interface (16).

5. A shallow-hole rod puller according to claim 4, characterized in that: The positioning disk (17) is flush with the inner wall of the groove (9) on one side, and the thickness of the positioning disk (17) is the same as the depth of the moving groove (15).

6. A shallow-hole rod puller according to claim 1, characterized in that: A lifting plate (18) is slidably installed on one side wall of the groove (9). The lifting plate (18) is located at the lower end of the sliding opening (11). The lifting plate (18) and the side wall of the groove (9) are flush.

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