Portable underground metal pipeline detection equipment

Abstract

The utility model relates to the technical field of metal pipeline detection, in particular to portable underground metal pipeline detection equipment. The equipment comprises a support frame, a receiver and a grounding pin, the supporting frame comprises an I-shaped supporting rod and an n-shaped supporting rod which can rotate by 90 degrees. The receiver comprises a receiving rod, an operation screen arranged at one end of the receiving rod and a spherical joint which is arranged on a rod body of the receiving rod close to the operation screen and is matched with the lantern ring; the grounding needle comprises a pedal plate which is in sliding connection with the n-shaped supporting rod through a sliding sleeve, and a front needle and a rear needle which are arranged on one side, far away from the receiver, of the pedal plate; according to the utility model, the receiver with the spherical joint and the grounding pin with the sliding sleeve are designed based on the operation characteristics of the detection device, so that the position of the receiver can be corrected through the self weight of the receiver, an operator can access the grounding pin in a pedal mode, and the overall operation efficiency of the equipment is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal pipeline detection, in particular to a portable underground metal pipeline detection device. Background Art

[0002] Using electromagnetic induction technology to detect buried metal pipes, cables, and optical cables is currently a common method.

[0003] The receivers commonly used on the market for receiving alternating electromagnetic signals need to be held by the operator. During use, the direction and status of the underground metal pipeline are judged by observing the changes in signal strength. During this period, the operator needs to keep the receiver vertical and constantly correct the data by inserting grounding pins, which is time-consuming, labor-intensive and inefficient.

[0004] For example, the patent with application number "CN202222391911.4" designs a portable underground metal detector. Although the detector uses a folding and telescopic structure to reduce the overall size of the device when it is stored, it still uses the method of human arm force during use, which is inconvenient to use; in addition, due to its structural design, the device is difficult to receive electromagnetic signals deep underground, and therefore cannot detect deeply buried metal pipelines.

[0005] In view of the above problems, the inventor decided to design a metal pipeline detection device with better portability during operation. Utility Model Content

[0006] In order to achieve the above-mentioned purpose, the utility model provides a portable underground metal pipeline detection device, which replaces human support with mechanical support, and is designed with a receiver with a spherical joint and a grounding pin with a sliding sleeve based on the operating characteristics of the detection device, so that the receiver can correct its own position by its own weight, and allows the operator to use a foot-operated method to connect the grounding pin, thereby greatly improving the overall operating efficiency of the equipment.

[0007] A portable underground metal pipeline detection device designed in this scheme includes a support frame, a receiver and a grounding pin;

[0008] The support frame comprises a convex hand-held frame and a first hand-held sleeve and a second hand-held sleeve respectively arranged at two ends of the convex hand-held frame;

[0009] The inner cavity of the first hand-held sleeve is slidably connected with a receiver telescopic rod, and the receiver telescopic rod is rotatably connected to an I-shaped support rod with a universal wheel through a 90° rotating joint;

[0010] The inner cavity of the second hand-held sleeve is slidably connected with a grounding pin telescopic rod, and the grounding pin telescopic rod is rotatably connected to the convex support rod with a universal wheel through a 90° rotating joint;

[0011] One end of the I-shaped support rod away from the universal wheel is provided with a limit buckle that rotates around its axis; a collar is arranged on one side of the I-shaped support rod body adjacent to the limit buckle; the connection positions of the collar and the 90° rotating joint with the I-shaped support rod body are both symmetrical about the middle axis of the I-shaped support rod.

[0012] The receiver includes a receiving rod, an operation screen arranged at one end of the receiving rod, and a spherical joint arranged on the receiving rod body adjacent to the operation screen and adapted to the collar.

[0013] The grounding pin includes a foot pedal slidably connected to the U-shaped support rod through a sliding sleeve, and a front pin and a rear pin arranged on the side of the foot pedal away from the receiver; the position of the front pin is adjacent to the support frame, and the position of the rear pin is away from the support frame.

[0014] Furthermore, limit ridges parallel to the axis are arranged in the inner cavities of the first hand-held sleeve and the second hand-held sleeve.

[0015] Limit grooves adapted to the limit ridges are arranged on the rod bodies of the receiver telescopic rod and the grounding pin telescopic rod.

[0016] Note: The limit ridges and the limit grooves cooperate with each other to prevent the receiver telescopic rod from rotating around the central axis during use.

[0017] Furthermore, limit holes are arranged on the barrel bodies of the first hand-held sleeve and the second hand-held sleeve.

[0018] Elastic bumps adapted to the limit holes are arranged on the rod bodies of the receiver telescopic rod and the grounding pin telescopic rod.

[0019] Note: Through the cooperation between the limit holes and the elastic bumps, the extended lengths of the receiver telescopic rod and the grounding pin telescopic rod can be determined, which is convenient for the operator to adjust according to the specific situation.

[0020] Furthermore, denoting the plane where the maximum cross-section of the convex hand-held frame is located as the observation plane, the central axis of the I-shaped support rod is parallel to the observation plane at any rotation angle.

[0021] Observed perpendicular to the observation plane, the I-shaped support rod includes two extreme rotation positions:

[0022] The first one: The projection of the I-shaped support rod on the observation plane is perpendicular to the central axis of the first hand-held sleeve, and the end with the universal wheel is located on the opening side of the convex hand-held frame.

[0023] The second one: The projection of the I-shaped support rod on the observation plane is parallel to the central axis of the first hand-held sleeve, and the end with the universal wheel is adjacent to the grounding pin.

[0024] Note: The above content records the unfolded and folded states of the I-shaped support rod, corresponding to the working and storage states of the metal pipeline detection device.

[0025] Further, denote the plane where the largest cross-section of the convex hand-held frame lies as the observation plane. Then, the largest cross-section of the U-shaped support rod is perpendicular to the observation plane at any rotation angle.

[0026] Observed perpendicular to the observation plane, the U-shaped support rod includes two extreme rotation positions:

[0027] The first one: The projection of the U-shaped support rod on the observation plane is perpendicular to the central axis of the second hand-held sleeve, and the universal wheel end is located on the opening side of the convex hand-held frame.

[0028] The second one: The projection of the U-shaped support rod on the observation plane is parallel to the central axis of the second hand-held sleeve, and the universal wheel end is adjacent to the receiver.

[0029] Note: The above content describes the unfolded and folded states of the U-shaped support rod, corresponding to the working and storage states of the metal pipeline detection device.

[0030] Further, a grounding pin connection hole is provided at the bottom of the foot pedal, and a receiver connection hole corresponding to the connection hole is provided on the operation screen.

[0031] Note: By connecting the grounding pin connection hole and the receiver connection hole with a wire, the receiver can directly read the electromagnetic signal read after the grounding pin extends into the ground, and judge the direction of the metal pipeline below or whether there are damage or corrosion points through the change of the electromagnetic magnitude.

[0032] Further, a return spring is provided between the sliding sleeve and the universal wheel of the U-shaped support rod.

[0033] Note: The return spring can assist the grounding pin to return to the initial position, simplifying the operation.

[0034] Further, the surface of the foot pedal is insulated.

[0035] Note: This is to prevent the current from guiding to the human body during grounding and eliminate potential safety hazards.

[0036] Compared with the existing underground metal pipeline detection equipment, the beneficial effects of the present utility model are as follows:

[0037] (1) A portable underground metal pipeline detection device designed by the present utility model. This device replaces manual support with mechanical support, and designs a receiver with a spherical joint and a grounding pin with a sliding sleeve based on the operation characteristics of the detection device. In this way, the receiver can correct its own position by its own weight, and the operator can use the foot pedal method to insert the grounding pin, thereby greatly improving the overall operation efficiency of the equipment.

[0038] (2)A portable underground metal pipeline detection device designed by the utility model can store the receiver and the grounding pin under the support frame through mechanical folding. After folding, the whole device is compact, which is convenient for the operator to carry and transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic structural diagram of the device in Embodiment 1;

[0040] Figure 2 is a schematic structural diagram of the device in Embodiment 1 from another angle;

[0041] Figure 3 is a schematic structural diagram of the device in Embodiment 1 from another angle;

[0042] Figure 4 is Figure 3 a partial enlarged view of part A in

[0043] Figure 5 a schematic diagram of the device in normal operation in Embodiment 1;

[0044] Figure 6 a schematic diagram of the device in folded storage in Embodiment 1;

[0045] Figure 7 is Figure 6 the top view of

[0046] Figure 8 is Figure 6 the front view of

[0047] Fig. 9 a schematic diagram of the device in expanded operation in Embodiment 1;

[0048] Fig.10 is a schematic structural diagram of the device in Embodiment 2.

[0049] In the figure:

[0050] 1 - support frame, 11 - convex hand-held frame, 12 - first hand-held sleeve, 13 - second hand-held sleeve, 14 - receiver telescopic rod, 15 - grounding pin telescopic rod, 16 - I-shaped support rod, 161 - collar, 162 - limit buckle, 17 - U-shaped support rod, 18 - universal wheel;

[0051] 2 - receiver, 21 - receiving rod, 22 - operation screen, 23 - spherical joint, 24 - receiver connection hole;

[0052] 3 - grounding pin, 31 - sliding sleeve, 32 - foot pedal, 33 - front needle, 34 - rear needle, 35 - grounding pin connection hole;

[0053] 4-limiting edge, 5-limiting groove, 6-limiting hole, 7-elastic protrusion, 8-90° rotating joint, 9-reset spring. DETAILED DESCRIPTION

[0054] In order to further illustrate the method adopted by the utility model and the effect achieved, the technical solution of the utility model will be clearly and completely described in combination with experiments below.

[0055] Embodiment 1: This embodiment describes a portable underground metal pipeline detection device.

[0056] The portable underground metal pipeline detection device comprises a support frame 1, a receiver 2 and a grounding pin 3;

[0057] The support frame 1 includes a convex hand-held frame 11 and a first hand-held sleeve 12 and a second hand-held sleeve 13 respectively arranged at two ends of the convex hand-held frame 11;

[0058] The inner cavity of the first hand-held sleeve 12 is slidably connected with a receiver telescopic rod 14, and the receiver telescopic rod 14 is rotatably connected to an I-shaped support rod 16 with a universal wheel 18 through a 90° rotation joint 8;

[0059] The second hand-held sleeve 13 is slidably connected to the inner cavity of the grounding needle telescopic rod 15, and the grounding needle telescopic rod 15 is rotatably connected to the convex support rod 17 with a universal wheel 18 through a 90° rotating joint 8;

[0060] A limit buckle 162 is provided on one end of the I-shaped support rod 16 away from the universal wheel 18 and is rotatable around its axis; a collar 161 is provided on one side of the I-shaped support rod 16 adjacent to the limit buckle 162; the connection positions of the collar 161 and the 90° rotation joint 8 with the I-shaped support rod 16 are symmetrical based on the central axis of the I-shaped support rod 16;

[0061] The receiver 2 includes a receiving rod 21, an operating screen 22 disposed at one end of the receiving rod 21, and a spherical joint 23 disposed on the rod body of the receiving rod 21 adjacent to the operating screen 22 and adapted to the collar 161;

[0062] The grounding pin 3 includes a foot pedal 32 slidably connected to the shaped support rod 17 through a sliding sleeve 31, and a front pin 33 and a rear pin 34 arranged on the side of the foot pedal 32 away from the receiver; the front pin 33 is located adjacent to the support frame 1, and the rear pin 34 is located away from the support frame 1.

[0063] Specifically, the inner cavities of the first hand-grip sleeve 12 and the second hand-grip sleeve 13 are both provided with limiting edges 4 parallel to their axes;

[0064] The rod bodies of the receiver telescopic rod 14 and the grounding pin telescopic rod 15 are both provided with limiting grooves 5 matched with the limiting edges 4 .

[0065] Specifically, limiting holes 6 are provided on the barrel bodies of the first hand-held sleeve 12 and the second hand-held sleeve 13;

[0066] Elastic bumps 7 adapted to the limiting holes 6 are provided on the rod bodies of the receiver telescopic rod 14 and the ground needle telescopic rod 15.

[0067] Specifically, the plane where the maximum cross-section of the convex hand-held frame 11 is located is defined as the observation plane, and the central axis of the I-shaped support rod 16 is parallel to the observation plane at any rotation angle;

[0068] Observed perpendicular to the observation plane, the I-shaped support rod 16 includes two extreme rotation positions:

[0069] The first type: The projection of the I-shaped support rod 16 on the observation plane is perpendicular to the central axis of the first hand-held sleeve 12, and the end provided with the universal wheel 18 is located on the opening side of the convex hand-held frame 11;

[0070] The second type: The projection of the I-shaped support rod 16 on the observation plane is parallel to the central axis of the first hand-held sleeve 12, and the end provided with the universal wheel 18 is adjacent to the ground needle 3.

[0071] Specifically, the plane where the maximum cross-section of the convex hand-held frame 11 is located is defined as the observation plane, and the maximum cross-section of the 冂-shaped support rod 17 is perpendicular to the observation plane at any rotation angle;

[0072] Observed perpendicular to the observation plane, the 冂-shaped support rod 17 includes two extreme rotation positions:

[0073] The first type: The projection of the 冂-shaped support rod 17 on the observation plane is perpendicular to the central axis of the second hand-held sleeve 13, and the end provided with the universal wheel 18 is located on the opening side of the convex hand-held frame 11;

[0074] The second type: The projection of the 冂-shaped support rod 17 on the observation plane is parallel to the central axis of the second hand-held sleeve 13, and the end provided with the universal wheel 18 is adjacent to the receiver 2.

[0075] Specifically, a ground needle connection hole 35 is provided at the bottom of the foot pedal 32, and a receiver connection hole 24 corresponding to the connection hole 35 is provided on the operation screen 22.

[0076] Specifically, a return spring 9 is provided between the sliding sleeve 31 and the universal wheel 18 of the 冂-shaped support rod 17.

[0077] Specifically, the surface of the foot pedal is insulated.

[0078] Embodiment 2: The content recorded in this embodiment is a portable underground metal pipeline detection device with another structure. Except for the following content, the rest is the same as that in Embodiment 1.

[0079] In the underground metal pipeline detection device designed in Example 2, a return spring 9 is provided between the sliding sleeve and the universal wheel of the convex support rod.

[0080] Embodiment 3: The description of Embodiment 3 is based on the recording scheme in Embodiment 2, and is intended to illustrate the workflow of the present utility model.

[0081] S1. Test equipment and debug the parameters of receiver 2 and the transmitter used with it;

[0082] S2. Determine the working area, connect the test pile hand hole and ground rod from the transmitter, and sprinkle water on the surface of the site (such as soil) that can penetrate water to improve the signal strength;

[0083] S3, turning on the transmitter to apply an alternating electromagnetic signal of a selected frequency to the underground pipeline, thereby exciting the underground metal pipeline to generate an induced current, and the induced current generates an alternating magnetic field around the metal pipeline during the propagation process;

[0084] S4. The operator pushes the assembled detection device forward to ensure that the front needle of the grounding needle faces the forward direction;

[0085] S5. During the forward movement, the receiving rod of the receiver can remain vertical under the action of its own weight and cut the alternating magnetic field to determine the direction of the pipeline from the feedback data;

[0086] S6. According to actual needs, the operator steps the grounding pin into the ground with his foot every time he walks a certain distance. The receiver further reads the data to determine the location and specific status (intact or damaged) of the underground metal pipeline. After collecting the data, the operator hooks up the pedal to make it rebound.

[0087] S7, repeat the above step S6 to complete the detection operation;

[0088] S8. After the test is completed, fold the receiver and ground pin and fix the receiver with the limit buckle; now the operator can transfer the device through the convex handheld stand.

Claims

1. A portable underground metal pipeline detection device, characterized in that: It comprises a support frame (1), a receiver (2) and a grounding pin (3); The support frame (1) comprises a convex handheld frame (11) and a first handheld sleeve (12) and a second handheld sleeve (13) respectively arranged at two ends of the convex handheld frame (11); A receiver telescopic rod (14) is slidably connected to the inner cavity of the first hand-held sleeve (12), and the receiver telescopic rod (14) is rotatably connected to an I-shaped support rod (16) with a universal wheel (18) via a 90° rotation joint (8); The inner cavity of the second hand-held sleeve (13) is slidably connected to a grounding needle telescopic rod (15), and the grounding needle telescopic rod (15) is rotatably connected to a convex support rod (17) with a universal wheel (18) via a 90° rotating joint (8); A limit buckle (162) is provided on one end of the I-shaped support rod (16) away from the universal wheel (18) and is rotatable around its axis; a collar (161) is provided on the side of the I-shaped support rod (16) adjacent to the limit buckle (162); the connection positions of the collar (161) and the 90° rotation joint (8) with the I-shaped support rod (16) are all symmetrical based on the central axis of the I-shaped support rod (16); The receiver (2) comprises a receiving rod (21), an operating screen (22) arranged at one end of the receiving rod (21), and a spherical joint (23) arranged on the rod body of the receiving rod (21) adjacent to the operating screen (22) and adapted to the collar (161); The grounding pin (3) comprises a foot pedal (32) slidably connected to the shaped support rod (17) via a sliding sleeve (31), and a front pin (33) and a rear pin (34) arranged on a side of the foot pedal (32) away from the receiver; the front pin (33) is located adjacent to the support frame (1), and the rear pin (34) is located away from the support frame (1).

2. A portable underground metal pipeline detection device as claimed in claim 1, characterized in that: The inner cavities of the first hand-grip sleeve (12) and the second hand-grip sleeve (13) are both provided with limiting edges (4) parallel to their axes; The receiver telescopic rod (14) and the grounding pin telescopic rod (15) are both provided with limiting grooves (5) adapted to the limiting edges (4) on their rod bodies.

3. A portable underground metal pipeline detection device as claimed in claim 1, characterized in that: The first hand-held sleeve (12) and the second hand-held sleeve (13) are both provided with a limiting hole (6) on their sleeves; The receiver telescopic rod (14) and the grounding pin telescopic rod (15) are both provided with elastic protrusions (7) that match the limiting holes (6).

4. A portable underground metal pipeline detection device as claimed in claim 1, characterized in that: The plane where the maximum cross section of the convex handheld frame (11) is located is taken as the observation plane, and the central axis of the I-shaped support rod (16) is parallel to the observation plane at any rotation angle; When viewed perpendicular to the viewing plane, the I-shaped support rod (16) includes two extreme rotation positions: The first type: the projection of the I-shaped support rod (16) on the observation plane is perpendicular to the central axis of the first hand-held sleeve (12), and the end of the universal wheel (18) is located at the opening side of the convex hand-held frame (11); The second type: the projection of the I-shaped support rod (16) on the observation plane is parallel to the central axis of the first hand-held sleeve (12), and the end of the universal wheel (18) is arranged adjacent to the grounding pin (3).

5. A portable underground metal pipeline detection device as claimed in claim 1, characterized in that: The plane where the maximum cross section of the convex handheld frame (11) is located is taken as the observation plane, and the maximum cross section of the concave-shaped support rod (17) is perpendicular to the observation plane at any rotation angle; When viewed perpendicular to the viewing plane, the shaped support rod (17) includes two extreme rotation positions: The first type: the projection of the convex support rod (17) on the observation plane is perpendicular to the central axis of the second hand-held sleeve (13), and the end of the universal wheel (18) is located at the opening side of the convex hand-held frame (11); The second type: the projection of the shaped support rod (17) on the observation plane is parallel to the central axis of the second hand-held sleeve (13), and the end of the universal wheel (18) is arranged adjacent to the receiver (2).

6. A portable underground metal pipeline detection device as claimed in claim 1, characterized in that: A grounding pin connection hole (35) is provided at the bottom of the foot pedal (32), and a receiver connection hole (24) corresponding to the connection hole (35) is provided on the operation screen (22).

7. A portable underground metal pipeline detection device as claimed in claim 1, characterized in that: A return spring (9) is provided between the sliding sleeve (31) and the universal wheel (18) of the convex support rod (17).

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