A rod puller for fishing a stuck rod in a borehole

Abstract

The utility model discloses a kind of for the fishing of inclinometer tube inner carding bar, including sleeve, sleeve can be contained in inclinometer tube;Sleeve bottom can be sleeved into the top end of inclinometer rod, and relatively move downward along inclinometer rod;Guiding assembly is provided at the bottom of sleeve, guiding assembly includes low wheel guide slot, low wheel guide slot can exert downward pressure to low wheel, so that low wheel is centered on hinged point, rotates downward;Guiding assembly further includes and the high wheel avoidance slot of low wheel guide slot opposite setting, high wheel avoidance slot is the through slot extending from sleeve bottom upward, the width of high wheel avoidance slot is greater than the width of high wheel, low wheel rotates downward, can drive high wheel to rotate in the direction close to inclinometer rod, so that high wheel is contained in sleeve. By the setting of guiding assembly, it can drive the high wheel that is stuck, so that high wheel is contained in sleeve, and then inclinometer rod can be taken out, expensive inclinometer rod and inclinometer tube are protected, and the scrap of monitoring hole is avoided, a large amount of cost is saved.

Description

Technical Field

[0001] This utility model relates to the fields of geotechnical engineering monitoring and geological disaster prevention technology, specifically to a portable rod retriever for retrieving rods stuck inside inclinometer tubes. Background Technology

[0002] In deformation monitoring of engineering projects such as slopes, dams, and foundation pits, movable inclinometer systems are commonly used. This system consists of a PVC inclinometer tube and an inclinometer rod with pulleys. During long-term use, the PVC tube may deform due to soil compression, foreign objects may fall in, or the tube may rupture, causing the inclinometer rod to become stuck inside the tube and unable to be pulled out.

[0003] The existing processing methods are generally as follows:

[0004] ① Forceful pulling: Attempting to pull it out manually or mechanically. This can easily lead to the expensive inclinometer rod connector coming off or the cable breaking, causing permanent damage.

[0005] ② Abandoning the pole for safekeeping: We had no choice but to abandon the stuck inclinometer pole, but the pole blocked the pipe, rendering the entire monitoring hole unusable and requiring re-drilling, which was very costly.

[0006] ③ Complex salvage: Try using general-purpose salvage tools, but because they are not designed for this confined space, the results are often poor, and may even push the pole deeper or worsen the jamming situation.

[0007] The above methods are very inefficient and dangerous. How to retrieve the stuck inclinometer (clog rod) from the inclinometer tube is still a technical problem that needs to be solved. Utility Model Content

[0008] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a rod retriever for retrieving stuck rods from inside the inclinometer tube, which can remove the stuck inclinometer rods from inside the inclinometer tube.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a rod retriever for retrieving rods stuck inside inclinometer tubes, comprising:

[0010] A sleeve, the outer diameter of which is smaller than the inner diameter of the inclinometer tube, is accommodated inside the inclinometer tube; the inner diameter of which is larger than the outer diameter of the inclinometer rod, the bottom of which can be fitted into the top of the inclinometer rod and move downward relative to it along the inclinometer rod.

[0011] A guide assembly is provided at the bottom of the sleeve. The guide assembly includes a low wheel guide groove, which can apply downward pressure to the low wheel, causing the low wheel to rotate downward around the hinge point.

[0012] The guide assembly also includes a high wheel clearance groove disposed opposite to the low wheel guide groove. The high wheel clearance groove is a through groove extending upward from the bottom end of the sleeve. The width of the high wheel clearance groove is greater than the width of the high wheel. When the low wheel rotates downward, it can drive the high wheel to rotate towards the inclinometer rod, so that the high wheel can be accommodated inside the sleeve.

[0013] Furthermore, the low wheel guide groove is a through groove extending upward from the bottom end of the sleeve. The width of the low wheel guide groove is smaller than the width of the low wheel. The low wheel guide groove can clamp the low wheel, clamp the low wheel, and apply downward pressure.

[0014] Furthermore, at the bottom of the sleeve, the inner wall of the sleeve is inclined downwards towards the outer wall of the sleeve, forming an inclined surface on the inner wall of the sleeve, so that the inner diameter of the bottom of the sleeve gradually increases from top to bottom, forming a guide opening that is wider at the bottom and narrower at the top at the bottom of the sleeve.

[0015] Furthermore, a spring-loaded hammering mechanism is provided at the top of the sleeve, and at least a portion of the spring-loaded hammering mechanism is accommodated within the cavity of the sleeve. The spring-loaded hammering mechanism can slide along the axial direction of the sleeve to impact the sleeve.

[0016] Furthermore, the elastic hammering mechanism includes a connector and a hammering component. The outer diameter of the connector is smaller than the inner diameter of the top of the sleeve, and the top of the sleeve is fitted onto the connector. The connector is connected to one end of the spring, and the other end of the spring is connected to the sleeve. The elastic extension and contraction direction of the spring is the direction in which the connector extends and contracts along the sleeve.

[0017] Furthermore, a strip groove is provided at the top of the sleeve, the strip groove being arranged along the axial direction of the sleeve, and a limiting protrusion is provided at a corresponding position of the connector, the limiting protrusion being accommodated within the strip groove, and the connector being able to drive the limiting protrusion to slide along the strip groove.

[0018] Furthermore, the hammer and the connector are integrally connected, and the outer diameter of the hammer is larger than the inner diameter of the top of the sleeve. A step is formed at the connection between the hammer and the connector, and the step can strike the top of the sleeve, causing the sleeve to vibrate.

[0019] Furthermore, a first through groove extending downward from the top of the sleeve is provided at the top of the sleeve. At least two first through grooves are provided, and the first through grooves divide the top of the sleeve into at least two first clamping pieces. The first clamping pieces have elasticity between them to clamp the connector. A second through groove extending upward from the end of the connector near the top of the sleeve is provided at the end of the connector. At least two second through grooves are provided, and the second through grooves divide the end of the connector into at least two second clamping pieces. The second clamping pieces have elasticity between them.

[0020] Furthermore, the first through groove and the second through groove are located on one side of the spring, and are clearance grooves provided by the spring on the sleeve and the connector, so that the spring and the side of the sleeve and the connector do not abut against each other.

[0021] Furthermore, a positioning protrusion is provided on the outer wall of the sleeve. When the sleeve is inserted into the inclinometer tube, the positioning protrusion can be accommodated in the inclinometer groove provided on the inner wall of the inclinometer tube. When the sleeve moves downward along the inclinometer tube, the positioning protrusion can move downward along the inclinometer groove.

[0022] The beneficial effects of this utility model are:

[0023] 1) By setting the guide component, the stuck high wheel can be driven and accommodated in the sleeve, so that the inclinometer rod can be taken out, protecting the expensive inclinometer rod and inclinometer tube, avoiding the scrapping of the monitoring hole, and saving a lot of costs.

[0024] 2) The elastic hammering mechanism is designed to apply gravity impact to the casing, which can easily deal with jamming conditions and avoid secondary damage caused by rough construction.

[0025] 3) The rod extractor has a simple structure, small size, and is easy to carry. It can be operated by a single person without the need for other large equipment, which improves work efficiency. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, 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 these drawings without creative effort.

[0028] Figure 1 The three-dimensional shape of the extraction rod according to an embodiment of the present invention Figure 1 ;

[0029] Figure 2 The three-dimensional shape of the extraction rod according to an embodiment of the present invention Figure 2 ;

[0030] Figure 3 This is a perspective view of the bottom of the sleeve according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the extraction rod for extracting the inclinometer rod according to an embodiment of the present invention. Figure 1 ;

[0032] Figure 5 This is a schematic diagram of the extraction rod for extracting the inclinometer rod according to an embodiment of the present invention. Figure 2 ;

[0033] Figure 6 This is a perspective view of an embodiment of the elastic hammering mechanism of this utility model;

[0034] Figure 7 This is a perspective view of the top of the sleeve according to an embodiment of the present invention;

[0035] Figure 8 for Figure 2 A magnified view of a portion of the image.

[0036] In the diagram: 1. Sleeve; 11. Top of sleeve; 111. Top of sleeve; 12. Bottom of sleeve; 121. Bottom end of sleeve; 13. Inner wall; 14. Outer wall; 15. Inclined surface; 2. Guide opening; 3. Guide assembly; 31. Low wheel guide groove; 32. High wheel clearance groove; 4. Positioning protrusion; 5. Elastic hammering mechanism; 51. Connecting piece; 511. Second through groove; 512. Second clamping piece; 513. Limiting protrusion; 514. First positioning hole; 52. Hammering piece; 53. Step; 54. First through groove; 55. First clamping piece; 56. Strip groove; 57. Second positioning hole; 6. Inclinometer rod; 61. Low wheel; 62. High wheel; 63. Connecting rod; 64. Hinge point. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0038] See appendix Figure 1 , 2 and attached Figure 4 As shown, the rod extractor in this embodiment is used to remove the inclinometer rod 6 stuck inside the inclinometer tube. It includes a sleeve 1, which has a bottom sleeve 12 at the lower end and a top sleeve 11 at the upper end. The inner diameter of the bottom sleeve 12 is larger than the outer diameter of the top sleeve of the inclinometer rod 6. The bottom sleeve 12 can fit into the top sleeve of the inclinometer rod 6 and move downwards relative to it along the inclinometer rod 6, accommodating the lower side rod wheel 61 and the upper side rod wheel 62 in the receiving cavity inside the sleeve 1.

[0039] See appendix Figure 3 and attached Figure 4As shown, at the bottom 12 of the sleeve, the inner wall 13 of the sleeve 1 is inclined downward towards the outer wall 14 of the sleeve 1, and an inclined surface 15 is formed on the inner wall 13 of the sleeve 1, so that the inner diameter of the bottom 12 of the sleeve gradually increases from top to bottom, and a guide opening 2 with a wider bottom and a narrower top is formed at the bottom 12 of the sleeve, so that the bottom 12 of the sleeve can be smoothly fitted into the inclined rod.

[0040] See appendix Figure 4 and attached Figure 5 As shown, the inclinometer rod 6, used for deformation measurement of engineering projects such as slopes, dams, and foundation pits, has a high wheel 62 and a low wheel 61 at its bottom. The high wheel 62 and the low wheel 61 are connected by a connecting rod 63. The middle part of the connecting rod 63 is hinged to the bottom of the inclinometer rod 6, and the high wheel 62 and the low wheel 61 can rotate around the hinge point 64. In deformation monitoring of engineering projects such as slopes, dams, and foundation pits, the high wheel 62 often gets stuck at the broken part of the PVC inclinometer tube due to a rupture, making it impossible to pull the inclinometer rod 6 out of the PVC inclinometer tube.

[0041] See appendix Figure 3-5 As shown, the rod extractor of this application has a guide assembly 3 at the bottom 12 of the sleeve, which is used to disengage the stuck roller (generally the high roller 62) from the jamming point and smoothly enter the rod extractor sleeve 1. The guide assembly 3 includes a low roller guide groove 31, which is a through groove provided on the sleeve 1 and extending upward from the bottom 121 of the sleeve, used to guide the movement of the low roller 61. The width of the low roller guide groove 31 is smaller than the width of the low roller 61. During the downward movement of the rod extractor, the low roller guide groove 31 can clamp the low roller 61 and apply downward pressure to the clamped low roller 61, causing the low roller 61 to rotate downward about the hinge point 64, that is, to rotate clockwise (see attached diagram). Figure 5 ).

[0042] In some embodiments, the low wheel guide groove 31 may also be a groove for accommodating the low wheel 61, with the bottom of the groove abutting against the low wheel 61 to apply downward pressure to the low wheel 61, causing the low wheel to rotate downward.

[0043] The guide assembly 3 also includes a high wheel clearance groove 32 disposed opposite to the low wheel guide groove 31. The high wheel clearance groove 32 is a through groove disposed at the bottom of the sleeve 1 and extending upward from the bottom end 121 of the sleeve. The width of the high wheel clearance groove 32 is greater than the width of the high wheel 62. When the low wheel 61 rotates downward clockwise, the connecting rod 63 drives the high wheel 62 to rotate clockwise toward the direction closer to the inclinometer rod 6, so that the high wheel 62 can disengage from the locking node and be accommodated inside the sleeve 1 (see attached diagram). Figure 4 ).

[0044] In some embodiments, a positioning protrusion 4 (attached) is provided on the outer wall of the sleeve 1. Figure 2When the sleeve 1 is inserted into the PVC inclinometer tube, the positioning protrusion 4 is accommodated in the inclinometer groove provided on the inner wall of the PVC inclinometer tube. When the sleeve 1 moves downward along the inclinometer tube, the positioning protrusion 4 moves downward along the inclinometer groove. By setting the positioning protrusion 4, it is ensured that when the sleeve 1 is inserted into the inclinometer tube, the position of the guide component 3 provided on the sleeve 1 is matched with the position of the low wheel 61 and the high wheel 62. The low wheel 61 can be accommodated in the low wheel guide groove 31, and the low wheel 61 is driven to rotate through the low wheel guide groove 31.

[0045] See appendix Figure 2 , 6 As shown in Figure 8, in some embodiments, a spring hammering mechanism 5 is provided at the top 11 of the sleeve. When the rod taker is stuck and cannot drive the lower wheel 61, the spring hammering mechanism 5 can strike the sleeve 1, causing the sleeve 1 to vibrate and have a downward impact force, which drives the lower wheel 61 and the upper wheel 62 to vibrate, and finally allows the upper wheel 62 to disengage from the jamming part and enter the inside of the sleeve 1.

[0046] In some embodiments, the elastic hammering mechanism 5 includes a connector 51 and a hammering member 52. The outer diameter of the connector 51 is smaller than the inner diameter of the sleeve top 11, and the sleeve top 11 is sleeved on the connector 51.

[0047] A strip groove 56 is provided on the top 11 of the sleeve 1, and the strip groove 56 is arranged along the axial direction of the sleeve 1. A limiting protrusion 513 is provided at the corresponding position of the connector 51. The limiting protrusion 513 is accommodated in the strip groove 56. The connector 51 can drive the limiting protrusion 513 to slide along the strip groove 56, but the limiting protrusion 513 can only slide within the strip groove 56. Through the arrangement of the strip groove 56 and the limiting protrusion 513, the relative position of the elastic hammering mechanism 5 and the sleeve 1 is limited, so that the elastic hammering mechanism 5 can perform telescopic movement within a certain range along the axial direction of the sleeve 1.

[0048] In some embodiments, a first positioning hole 514 is provided on the connector 51 for connecting to one end of a spring (not shown), and a second positioning hole 57 is provided at a corresponding position on the sleeve 1 for connecting to the other end of the spring. The elastic extension and contraction direction of the spring is the same as the extension and contraction direction of the connector 51 along the sleeve 1. When the connector 51 is driven by an external force, it moves away from the sleeve 1, and the spring is stretched. When the worker releases the hand and the external force disappears, the connector 51 moves rapidly towards the sleeve 1 under the action of the elastic force, driving the hammer 52 to hammer the sleeve 1.

[0049] In some embodiments, the hammer 52 and the connector 51 are integrally connected, and the outer diameter of the hammer 52 is larger than the inner diameter of the top 11 of the sleeve. A step 53 is formed at the connection between the hammer 52 and the connector 51. When the external force of the tension spring disappears, the connector 51 moves towards the sleeve 1 under the action of the elastic force. The step 53 hits the top 111 of the sleeve, causing the sleeve 1 to vibrate. Then, the lower wheel 61 drives the higher wheel 62 to shake at the locking point, so that the higher wheel 62 can be removed from the locking point.

[0050] In some embodiments, the outer diameter of the hammer 52 is greater than or equal to the outer diameter of the sleeve 1, so that the thickness of the formed step 53 is greater than or equal to the wall thickness of the sleeve 1, thereby increasing the impact area between the hammer 52 and the sleeve 1 and improving the impact effect.

[0051] In some embodiments, a first through groove 54 extending downward from the top of the sleeve 11 is provided at the top of the sleeve 11. Two first through grooves 54 are provided, arranged opposite each other, dividing the top of the sleeve 11 into two first clamping pieces 55. The two first clamping pieces 55 have a certain elasticity, clamping the connector 51. Similarly, a second through groove 511 extending upward from the end of the connector 51 near the top of the sleeve 11 is provided at the end of the connector 51. Two second through grooves 511 are provided, dividing the end of the connector 51 into two second clamping pieces 512. The two second clamping pieces 512 have a certain elasticity. The provision of the first through grooves 54 and the second through grooves 511 provides a certain elasticity at the connection between the sleeve 1 and the connector 51, facilitating the sliding of the connector 51 within the sleeve 1.

[0052] In some embodiments, the first through groove 54 and the second through groove 511 are located on one side of the spring and are clearance grooves provided on the sleeve 1 and the connector 51 by the spring, so that the spring and the sides of the sleeve 1 and the connector 51 do not abut against each other, thereby avoiding friction between the spring and the sleeve 1 and the connector 51 during the extension and retraction process.

[0053] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A rod retriever for retrieving a rod stuck inside a clincher tube, characterized in that, include: The sleeve (1) has an outer diameter smaller than the inner diameter of the inclinometer tube and can be accommodated inside the inclinometer tube; the inner diameter of the sleeve (1) is larger than the outer diameter of the inclinometer rod (6) and the bottom (12) of the sleeve can be fitted into the top of the inclinometer rod (6) and move downward relative to it along the inclinometer rod (6); A guide assembly (3) is provided at the bottom (12) of the sleeve. The guide assembly (3) includes a low wheel guide groove (31). The low wheel guide groove (31) can apply downward pressure to the low wheel (61) so that the low wheel (61) rotates downward around the hinge point (64). The guide assembly (3) also includes a high wheel avoidance groove (32) that is disposed opposite to the low wheel guide groove (31). The high wheel avoidance groove (32) is a through groove that extends upward from the bottom end (121) of the sleeve. The width of the high wheel avoidance groove (32) is greater than the width of the high wheel (62). When the low wheel (61) rotates downward, it can drive the high wheel (62) to rotate in a direction closer to the inclinometer rod (6), so that the high wheel (62) can be accommodated in the sleeve (1).

2. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 1, characterized in that, The low wheel guide groove (31) is a through groove extending upward from the bottom end (121) of the sleeve. The width of the low wheel guide groove (31) is smaller than the width of the low wheel (61). The low wheel guide groove (31) can clamp the low wheel (61), clamp the low wheel (61) and apply downward pressure.

3. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 1, characterized in that, At the bottom of the sleeve, the inner wall (13) of the sleeve (1) is inclined downward toward the outer wall (14) of the sleeve (1), forming an inclined surface (15) on the inner wall (13) of the sleeve (1), so that the inner diameter of the bottom of the sleeve gradually increases from top to bottom, forming a guide opening (2) that is wider at the bottom and narrower at the top at the bottom of the sleeve.

4. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 1, characterized in that, A spring hammer mechanism (5) is provided at the top (11) of the sleeve. At least a portion of the spring hammer mechanism (5) is contained within the cavity of the sleeve (1). The spring hammer mechanism (5) can slide along the axial direction of the sleeve (1) to impact the sleeve (1).

5. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 4, characterized in that, The elastic hammering mechanism (5) includes a connector (51) and a hammering component (52). The outer diameter of the connector (51) is smaller than the inner diameter of the top of the sleeve (11). The top of the sleeve (11) is fitted onto the connector (51). The connector (51) is connected to one end of the spring, and the other end of the spring is connected to the sleeve (1). The elastic extension and contraction direction of the spring is the direction of extension and contraction of the connector (51) along the sleeve (1).

6. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 5, characterized in that, A strip groove (56) is provided at the top (11) of the sleeve. The strip groove (56) is arranged along the axial direction of the sleeve (1). A limiting protrusion (513) is provided at the corresponding position of the connector (51). The limiting protrusion (513) is accommodated in the strip groove (56). The connector (51) can drive the limiting protrusion (513) to slide along the strip groove (56).

7. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 5, characterized in that, The hammer (52) and the connector (51) are integrally connected, and the outer diameter of the hammer (52) is larger than the inner diameter of the top of the sleeve (11). A step (53) is formed at the connection between the hammer (52) and the connector (51). The step (53) can strike the top of the sleeve (11) and cause the sleeve (1) to vibrate.

8. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 5, characterized in that, A first through groove (54) extending downward from the top end (111) of the sleeve is provided at the top of the sleeve (11). At least two first through grooves (54) are provided. The first through grooves (54) divide the top end (11) of the sleeve into at least two first clamping pieces (55). The first clamping pieces (55) have elasticity between them to clamp the connector (51). A second through groove (511) extending upward from the end of the connector (51) is provided at one end of the connector (51) near the top end (11). At least two second through grooves (511) are provided. The second through grooves (511) divide the end of the connector (51) into at least two second clamping pieces (512). The second clamping pieces (512) have elasticity between them.

9. The rod retriever for retrieving a rod stuck inside a clincher tube according to claim 8, characterized in that, The first through groove (54) and the second through groove (511) are located on one side of the spring and are clearance grooves provided on the sleeve (1) and the connector (51) so that the spring and the side of the sleeve (1) and the connector (51) do not abut.

10. The rod retriever for retrieving a rod stuck inside a clincher tube according to any one of claims 1-9, characterized in that, A positioning protrusion (4) is provided on the outer wall (14) of the sleeve (1). When the sleeve (1) is inserted into the inclinometer tube, the positioning protrusion (4) can be accommodated in the inclinometer groove provided on the inner wall of the inclinometer tube. When the sleeve (1) moves downward along the inclinometer tube, the positioning protrusion (4) can move downward along the inclinometer groove.

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