An underground metal pipeline direction detection device

Abstract

The present invention relates to the technical field of pipeline detection, and discloses an underground metal pipeline direction detection device, comprising an A-shaped frame body, the A-shaped frame body comprising an insulating handle, a support rod rotatably connected below the insulating handle, two support rods are provided and symmetrically distributed with the insulating handle as the center, a locking piece and a pin portion are provided at one end of the support rod away from the insulating handle, the pin portion comprises a thick rod, the top end of the thick rod is connected to the bottom of the locking piece, and the bottom end of the thick rod is slidably connected to a pin rod. The underground metal pipeline direction detection device can effectively solve the problem in the prior art that the A-shaped frame is inserted into the soil once every three to five steps during the detection process, and due to the single pin structure of the A-shaped frame, the depth of each manual insertion into the soil is limited. When the soil is soft, the A-shaped frame after insertion is prone to tipping over, and it is impossible to maintain good contact between the pins of the A-shaped frame and the ground, thereby affecting the numerical observation of the receiver.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline detection, and in particular to a device for detecting the direction of an underground metal pipeline. Background Art

[0002] An underground pipeline detector is a device used to detect and locate underground pipelines. It usually consists of the following main parts: transmitter, receiver, A-frame, probe sensor, signal line, control unit, power supply and data processing unit, etc.

[0003] The A-frame is a sensor shaped like the letter "A". It is mainly used to locate ground faults in direct buried cables. It can receive step voltage signals from the transmitter and transmit these signals to the receiver. The A-frame is inserted into the soil every three to five steps during the detection process. Due to the single pin structure of the A-frame, the depth of each manual insertion into the soil is limited. When the soil is soft, the A-frame is prone to tipping over after insertion, and it is impossible to maintain good contact between the pins of the A-frame and the ground, which in turn affects the numerical observation of the receiver. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an underground metal pipeline direction detection device, which can effectively solve the problem in the prior art that the A-frame is inserted into the soil every three to five steps during the detection process. Since the pin structure of the A-frame is single and the depth of manual insertion into the soil is limited each time, when the soil is soft, the A-frame is prone to tipping over after insertion, and good contact between the pins of the A-frame and the ground cannot be maintained, thereby affecting the numerical observation of the receiver.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an underground metal pipeline direction detection device, comprising:

[0009] An A-shaped frame body, the A-shaped frame body comprising an insulating handle, a support rod rotatably connected below the insulating handle, two support rods are provided and symmetrically distributed around the insulating handle, and a locking piece is provided at one end of the support rod away from the insulating handle;

[0010] The pin part includes a thick rod, the top end of the thick rod is connected to the bottom of the locking piece, the bottom end of the thick rod is slidably connected to the needle rod, the inside of the thick rod is provided with a built-in cavity, the top end of the needle rod passes through the thick rod and extends into the built-in cavity, and the top of the inner wall of the built-in cavity is provided with a strong spring connected to the outer end of the needle rod;

[0011] The inner wall of the built-in cavity is rotatably connected to a support plate via a rotating shaft, and the support plates are symmetrically distributed with the thick rod as the center.

[0012] Furthermore, the interior of the support rod is electrically connected to an external receiver via a plug wire, the interior of the support rod is slidably connected to a sleeve via a built-in groove, and the outer surface of the sleeve is provided with a return spring connected to the inner wall of the built-in groove.

[0013] Furthermore, the locking member includes a thin rod, the bottom end of which is fixedly connected to the top end of the thick rod, the thin rod is detachably mounted on the bottom end of the support rod via a threaded rod arranged at the top end thereof, the thin rod is rotatably connected to a rotating seat via a support block arranged on the outer surface of its circumference, and the rotating seat is fixedly connected to a locking rod on the side away from the support block.

[0014] Furthermore, the locking rod is slidably connected to a locking block via a limit strip arranged on its circumferential outer surface, a micro spring connected to the outer surface of the rotating seat is arranged on the side of the locking block close to the support block, and a locking groove is arranged on the side of the locking block away from the micro spring.

[0015] Furthermore, a limiting hole is provided on the outer circumferential surface of the locking rod, a limiting rod is slidably connected inside the engaging block and engages with the inner wall of the limiting hole, and a tightening groove is provided on the outer circumferential surface of the thin rod and matches with the outer end of the limiting rod.

[0016] Furthermore, the circumferential outer surface of the needle rod extending into the built-in cavity is fixedly connected to a toothed plate, the outer end of the support plate is fixedly connected to a gear meshing with the toothed plate, and the end face of the gear is rotatably connected to the inner wall of the built-in cavity through a rotating shaft.

[0017] Furthermore, a part of the circumferential outer surface of the gear adopts a tooth design, and a triangular pyramid plate is fixedly connected to one end of the support plate away from the gear.

[0018] Beneficial Effects

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] The present invention is provided with a pin part. After the A-frame body is unfolded, when the insulating handle is held and inserted downward, the needle rod on the pin part contacts the soil first, and the soil exerts a reverse force on it, driving the needle rod to move upward along the inside of the thick rod for a short distance. During the upward sliding of the needle rod, the tooth plate is driven to slide upward synchronously. Since the tooth plate and the gear are meshed, the tooth plate drives the gear, the support plate and the triangular cone plate to rotate synchronously. The triangular cone plate rotates downward and is inserted into the nearby soil to support the thick rod and the needle rod from the front and back sides. Under the joint action of the four groups of triangular cone plates, it can be prevented that the A-frame body after insertion will fall over when the needle rod encounters soft soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 For the embodiment of the present invention Figure 1 A schematic diagram of the structure with a partial enlargement at the center;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of an embodiment of the present invention when stored;

[0025] Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the structure with a partial enlargement at B in the middle;

[0026] Figure 5 For the embodiment of the present invention Figure 3 A schematic diagram of the structure with a partial enlargement at C in the middle;

[0027] Figure 6 It is a schematic diagram of the structure of the locking rod and the engaging block being three-dimensionally separated in an embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the three-dimensional separation of the pin part according to an embodiment of the present invention.

[0029] The numbers in the figure represent: 1. A-frame body; 11. Insulating handle; 12. Support rod; 121. Cardan; 122. Return spring; 13. Locking piece; 131. Thin rod; 1311. Tightening groove; 132. Threaded rod; 133. Support block; 134. Rotating seat; 135. Locking rod; 1351. Limiting strip; 1352. Limiting hole; 136. Engaging block; 1361. Engaging groove; 1362. Limiting rod; 137. Micro spring; 2. Pin part; 21. Thick rod; 22. Needle rod; 221. Tooth plate; 23. Built-in cavity; 24. Power spring; 25. Support plate; 251. Gear; 252. Triangular cone plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention will be further described below in conjunction with the embodiments.

[0032] Example:

[0033] See also Figure 1-Figure 7 The present invention provides a technical solution: an underground metal pipeline direction detection device, comprising:

[0034] A-shaped frame body 1, the A-shaped frame body 1 comprises an insulating handle 11, a support rod 12 is rotatably connected below the insulating handle 11, two support rods 12 are provided and symmetrically distributed around the insulating handle 11, and a locking member 13 is provided at one end of the support rod 12 away from the insulating handle 11;

[0035] The pin part 2 includes a thick rod 21, the top end of the thick rod 21 is connected to the bottom of the locking member 13, the bottom end of the thick rod 21 is slidably connected to a needle rod 22, an internal cavity 23 is provided in the thick rod 21, the top end of the needle rod 22 passes through the thick rod 21 and extends into the internal cavity 23, and a strong spring 24 connected to the outer end of the needle rod 22 is provided on the top of the inner wall of the internal cavity 23;

[0036] The inner wall of the built-in cavity 23 is rotatably connected to a support plate 25 via a rotating shaft, and the support plates 25 are symmetrically distributed with the thick rod 21 as the center.

[0037] The inside of the support rod 12 is electrically connected to the external receiver through a plug wire, and a clamping sleeve 121 is slidably connected to the inside of the support rod 12 through a built-in groove. The outer surface of the clamping sleeve 121 is provided with a return spring 122 connected to the inner wall of the built-in groove.

[0038] The locking member 13 includes a thin rod 131, the bottom end of which is fixedly connected to the top end of the thick rod 21. The thin rod 131 is detachably mounted on the bottom end of the support rod 12 via a threaded rod 132 arranged at the top end thereof. The thin rod 131 is rotatably connected to a rotating seat 134 via a supporting block 133 arranged on the outer surface of its circumference. The rotating seat 134 is fixedly connected to a locking rod 135 on the side away from the supporting block 133.

[0039] The locking rod 135 is slidably connected to the locking block 136 through a limiting strip 1351 arranged on its circumferential outer surface. The locking block 136 is provided with a micro spring 137 connected to the outer surface of the rotating seat 134 on the side close to the support block 133, and a locking groove 1361 is provided on the side of the locking block 136 away from the micro spring 137.

[0040] A limiting hole 1352 is formed on the outer circumference of the locking rod 135 , a limiting rod 1362 is slidably connected inside the engaging block 136 and engages with the inner wall of the limiting hole 1352 , and a tightening groove 1311 is formed on the outer circumference of the thin rod 131 and matches with the outer end of the limiting rod 1362 .

[0041] The outer circumferential surface of the needle rod 22 extending into the built-in cavity 23 is fixedly connected with a toothed plate 221, the outer end of the support plate 25 is fixedly connected with a gear 251 meshing with the toothed plate 221, and the end surface of the gear 251 is rotatably connected to the inner wall of the built-in cavity 23 through a rotating shaft.

[0042] The outer circumferential surface of the gear 251 is partially designed with teeth, and a triangular pyramid plate 252 is fixedly connected to one end of the support plate 25 away from the gear 251 .

[0043] refer to Figure 1-7 The A-frame is a sensor shaped like the letter "A". It is mainly used to locate ground faults in direct buried cables. It can receive step voltage signals from the transmitter and transmit these signals to the receiver. The A-frame is inserted into the soil every three to five steps during the detection process. Due to the single pin structure of the A-frame, the depth of each manual insertion into the soil is limited. When the soil is soft, the A-frame is prone to tipping over after insertion, and it is impossible to maintain good contact between the pins of the A-frame and the ground, which in turn affects the numerical observation of the receiver;

[0044] In order to overcome the above-mentioned defects, the present invention designs an underground metal pipeline direction detection device.

[0045] A-frame body 1 unfolding process:

[0046] First, the support rods 12 on the A-frame body 1 are opened bidirectionally outward, and the two support rods 12 are rotated around the inside of the insulating handle 11 respectively. The support rods 12 in the present invention are provided with two, each corresponding to a set of locking members 13. Take the left locking member 13 as an example (in actual application, the right locking member 13 is adjusted first): the locking rod 135 is rotated downward, and the rotation seat 134 is used to rotate around the support block 133 until the locking rod 135 rotates to a horizontal state; then, the limit rod 1362 is pulled upward, and the bottom end of the limit rod 1362 begins to disengage from the limit hole 1352, and under the elastic force of the micro spring 137, the engaging block 136 is driven to slide outward along the outer circumferential surface of the locking rod 135 (the limit rod 1362 is pulled upward to the bottom end of the limit rod 1362). 351 plays a limiting role in the sliding of the locking block 136 to prevent the locking block 136 from rotating), driving the locking groove 1361 to lock the locking rod 135 of the right locking piece 13, and the two are combined into a whole. Under the elastic force of the micro spring 137, in the horizontal direction, the rotating seat 134, the locking rod 135, the limiting strip 1351, the limiting hole 1352, the locking block 136, the locking groove 1361, the limiting rod 1362 and the micro spring 137 are combined into a whole. Then, under the action of gravity, the insulating handle 11 is pulled upward, the locking piece 13 and the pin part 2 are in a free hanging state, eliminating the trouble of manually correcting the verticality of the pin part 2. The threaded rod 132 is manually rotated to lock the support rod 12 and the thin rod 131. The support rod 12, the thin rod 131 and the support block 133 are combined into a whole, and the A-frame body 1 is then combined into a complete "triangle" with strong stability.

[0047] Working process of pin 2:

[0048] First, align the plug protrusion of the A-frame body 1 with the notch of the receiver base, push it inward and tighten it to complete the plug connection. During the detection process, the A-frame body 1 is inserted into the soil every three to five steps. The specific location of the defect or fault point is determined by observing the changes in the front and back arrows and values ​​on the screen. When the insulating handle 11 is held and inserted downward, the needle rod 22 on the pin portion 2 contacts the soil first, and the soil exerts a reverse force on it, driving the needle rod 22 to move a short distance upward along the inside of the thick rod 21 (the strong spring 24 is elastically deformed under pressure, which acts as a buffer for the needle rod 22, avoiding strong impact damage during the insertion of the needle rod 22). During the upward sliding of the needle rod 22, the tooth plate 221 is driven to slide upward synchronously. Since the tooth plate 221 and the gear 251 are meshedly connected, the tooth plate 221 will drive the gear 251, the support plate 25 and the triangular cone plate 252 to rotate synchronously. The triangular cone plate 252 rotates downward and is inserted into the nearby soil to support the thick rod 21 and the needle rod 22 from the front and back sides. Under the joint action of the four groups of triangular cone plates 252, it can prevent the A-frame body 1 from tipping over after the needle rod 22 encounters soft soil.

[0049] In summary, the present invention uses the pin portion 2 to have the following advantages:

[0050] Advantage 1: Traditional pins generally adopt a fixed structure, and have no buffering effect when touching hard objects during detection. The needle rod 22 in the present invention can move upward along the inside of the thick rod 21 for a short distance, and the strong spring 24 is compressed to undergo elastic deformation.

[0051] Advantage 2: When the needle rod 22 is inserted into the soil, it drives the tooth plate 221 to slide upward synchronously, and the tooth plate 221 drives the gear 251, the support plate 25 and the triangular cone plate 252 to rotate downward synchronously. The four sets of triangular cone plates 252 work together to prevent the A-frame body 1 from tipping over.

[0052] Advantage three, the downward expansion angle of the triangular cone plate 252 depends on the depth of the needle rod 22 inserted into the soil. The deeper the insertion depth, the more stable the needle rod 22 as a whole. At this time, the needle rod 22 and the tooth plate 221 slide upwards in a shorter distance, the triangular cone plate 252 rotates downward at a smaller angle, and the expansion range of the triangular cone plate 252 is larger, thereby increasing the overall stability.

[0053] Advantage 4: The circumferential outer surface of the gear 251 is partially designed with teeth, which can prevent the needle bar 22 from sliding upward too far, resulting in the problem that the needle bar 22 is not inserted deep enough into the soil. When storing it later, pull the needle bar 22 downward (the strong spring 24 is further stretched to reduce the fatigue strength of the strong spring 24), drive the tooth plate 221 to disengage from the gear 251, and then rotate the support plate 25 and the triangular cone plate 252 upward to facilitate the storage of the support plate 25 and the triangular cone plate 252. The smooth circumferential outer surface of the gear 251 fits tightly against the top of the tooth plate 221, which can prevent the support plate 25 and the triangular cone plate 252 from automatically resetting downward.

[0054] A-frame body 1 storage process:

[0055] After the detection is completed, the threaded rod 132 is manually rotated to loosen, and then the limiting rod 1362 is manually pulled upward, and the engaging block 136 is pulled back to drive the limiting rod 1362 to be inserted into the limiting hole 1352 (the micro spring 137 is compressed and elastically deformed). At the same time, the engaging groove 1361 is disengaged from the corresponding outer end of the locking rod 135. Next, the rotating seat 134, the locking rod 135 and the engaging block 136 are rotated upward, and the locking rod 135 is rotated to a vertical state, and the ferrule 121 is inserted into the outer end of the locking rod 135 and combined with it into a whole. At the same time, the inner wall of the tight groove 1311 acts on the limiting rod 1362, and in the storage state, the limiting rod 1362 will remain in a constant state. Finally, as can be seen from the above, the support plate 25 and the triangular cone plate 252 are stored, and the folding storage of the A-frame body 1 and the pin part 2 is completed.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An underground metal pipeline direction detection device, characterized in that: include: An A-shaped frame body (1), the A-shaped frame body (1) comprising an insulating handle (11), a support rod (12) being rotatably connected below the insulating handle (11), two support rods (12) being provided and symmetrically distributed around the insulating handle (11), and a locking piece (13) being provided at one end of the support rod (12) away from the insulating handle (11); A needle foot portion (2), the needle foot portion (2) comprising a thick rod (21), the top end of the thick rod (21) being connected to the bottom of the locking member (13), the bottom end of the thick rod (21) being slidably connected to a needle rod (22), an internal built-in cavity (23) being provided inside the thick rod (21), the top end of the needle rod (22) passing through the thick rod (21) and extending into the internal built-in cavity (23), a strong spring (24) connected to the outer end of the needle rod (22) being provided at the top of the inner wall of the internal built-in cavity (23); The inner wall of the built-in cavity (23) is rotatably connected to a support plate (25) via a rotating shaft, and the support plates (25) are symmetrically distributed with the thick rod (21) as the center; The support rod (12) is electrically connected to an external receiver via a plug line, the support rod (12) is slidably connected to a sleeve (121) via a built-in groove, the outer surface of the sleeve (121) is provided with a return spring (122) connected to the inner wall of the built-in groove, the circumferential outer surface of the needle rod (22) extending into the built-in cavity (23) is fixedly connected to a toothed plate (221), the outer end of the support plate (25) is fixedly connected to a gear (251) meshing with the geared plate (221), the end face of the gear (251) is rotatably connected to the inner wall of the built-in cavity (23) via a rotating shaft, the circumferential outer surface of the gear (251) is partially designed with teeth, and the end of the support plate (25) away from the gear (251) is fixedly connected to a triangular cone plate (252).

2. The underground metal pipeline direction detection device according to claim 1, characterized in that: The locking member (13) comprises a thin rod (131), the bottom end of the thin rod (131) being fixedly connected to the top end of the thick rod (21), the thin rod (131) being detachably mounted on the bottom end of the support rod (12) via a threaded rod (132) arranged at the top end thereof, the thin rod (131) being rotatably connected to a rotating seat (134) via a supporting block (133) arranged on the outer circumferential surface thereof, and the rotating seat (134) being fixedly connected to a locking rod (135) on a side away from the supporting block (133).

3. The underground metal pipeline direction detection device according to claim 2, characterized in that: The locking rod (135) is slidably connected to a locking block (136) via a limit strip (1351) provided on its circumferential outer surface; a micro spring (137) connected to the outer surface of a rotating seat (134) is provided on a side of the locking block (136) close to the support block (133); and a locking groove (1361) is provided on a side of the locking block (136) away from the micro spring (137).

4. The underground metal pipeline direction detection device according to claim 3 is characterized in that: The locking rod (135) has a limiting hole (1352) on its circumferential outer surface, the engaging block (136) is slidably connected to a limiting rod (1362) engaging with the inner wall of the limiting hole (1352), and the thin rod (131) has a tightening groove (1311) on its circumferential outer surface matching the outer end of the limiting rod (1362).

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