Pipeline positioning and welding device for underground tunnel

Abstract

The invention relates to the technical field of pipeline welding, and provides a pipeline positioning and welding device for an underground tunnel, which comprises a lifting mechanism, the lifting mechanism comprises a transverse plate, a lifting plate, a guide rod and an air cylinder, the transverse plate is detachably connected with a vehicle, side plates are fixedly mounted at the bottoms of the two ends of the transverse plate respectively, and guide grooves are formed in the side plates; the lifting plate is arranged below the transverse plate, the guide rod is slidably connected with the transverse plate and fixedly connected with the lifting plate, and the air cylinder is used for controlling the lifting plate to be close to or away from the transverse plate; the two guide mechanisms comprise sliding blocks, sliding rods, half funnels, baffles and springs, the sliding blocks make sliding contact with the inner walls of the guide grooves, the sliding rods are in sliding connection with the sliding blocks, the half funnels are fixedly installed at the inner ends of the sliding rods, each half funnel comprises a half funnel body and a half insertion pipe, the baffles are fixedly installed on the sliding rods, and the springs enable the sliding rods to have the trend of moving inwards; the two clamping mechanisms are used for clamping a second pipeline, and the clamping mechanisms synchronously move along with the sliding rod; and a welding mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, and in particular to a pipeline positioning welding device used in a tunnel. Background Art

[0002] In the field of construction, workers often perform welding operations between pipes. However, the distribution locations of pipes vary. For pipes located in tunnels, workers need to go down into the tunnels to perform welding operations. Therefore, welding operations face many difficulties: 1. The space in the tunnels is small, which brings many inconveniences to the workers' welding operations. 2. The conditions in the tunnels are complicated, often filled with sewage, mud or exposed steel bars, etc., posing a threat to the personal safety of workers. Summary of the invention

[0003] In view of the defects in the prior art, an object of the present invention is to provide a pipeline positioning welding device for a tunnel, which can automatically weld the pipelines located in the tunnel.

[0004] In order to achieve the above object, the present invention is implemented by the following technical solution: a pipeline positioning welding device for a tunnel, used in conjunction with a vehicle, for welding a first pipeline and a second pipeline, comprising:

[0005] A lifting mechanism, the lifting mechanism comprising a transverse plate, a lifting plate, a guide rod and a cylinder, the transverse plate is detachably connected to the vehicle, side plates are fixedly mounted at the bottoms of both ends of the transverse plate, the side plates are provided with guide grooves extending in the longitudinal direction, the lifting plate is transversely arranged below the transverse plate, the guide rod passes through the transverse plate in the longitudinal direction and is slidably connected to the transverse plate, the guide rod is fixedly connected to the lifting plate, and the cylinder is used to control the lifting plate to approach or move away from the transverse plate;

[0006] Two guide mechanisms, the two guide mechanisms are arranged in mirror symmetry and correspond to the two side plates one by one, the guide mechanism comprises a slider, a slide bar, a half funnel, a baffle and a spring, the slider is arranged in the guide groove and is in sliding contact with the inner wall of the guide groove, the slide bar passes through the slider in the transverse direction and is slidably connected with the slider, the half funnel is fixedly installed on the inner end of the slide bar, the half funnel comprises a half bucket body and a half insert tube, the inner diameter of the half insert tube is the same as the outer diameter of the first pipeline, the baffle is fixedly installed on the slide bar, and the spring makes the slide bar have a tendency to move inward;

[0007] Two clamping mechanisms, the two clamping mechanisms are arranged in mirror symmetry and correspond to the two guide mechanisms one by one, the two clamping mechanisms are used to clamp the second pipe, and the clamping mechanisms move synchronously with the sliding rod;

[0008] A welding mechanism is used to perform an annular welding operation on the contact position between the first pipeline and the second pipeline.

[0009] Furthermore, the clamping mechanism includes a longitudinal plate and a half-tube body, the longitudinal plate is arranged on the rear side of the half-tube and fixedly connected to the sliding rod, the half-tube body is fixedly mounted on the longitudinal plate, the inner diameter of the half-tube body is the same as the outer diameter of the second pipe, and the axis of the half-tube body is collinear with the axis of the half-tube.

[0010] Further, the welding mechanism includes two guide assemblies and a welding assembly;

[0011] The two guide assemblies are arranged in mirror symmetry and are respectively arranged on the two longitudinal plates, and the guide assemblies include a semicircular guide ring and a semi-toothed ring, and the semicircular guide ring and the semi-toothed ring are both fixedly mounted on the longitudinal plate;

[0012] The welding assembly includes a movable block, a welding gun, a motor and a gear. The movable block is arranged on the semicircular guide ring and is slidably connected to the semicircular guide ring. The welding gun and the motor are both fixedly mounted on the movable block. The gear is fixedly mounted on the output shaft of the motor and meshes with the semi-toothed ring.

[0013] Furthermore, the guide mechanism also includes an electromagnet and an iron block, the electromagnet and the iron block are arranged in mirror symmetry, the electromagnet is fixedly mounted on the slider, and the iron block is fixedly mounted on the baffle.

[0014] Furthermore, a plurality of positioning holes are opened on the inner side surface of one of the half funnels, and a plurality of positioning posts are fixedly installed on the inner side surface of the other half funnel, and the plurality of positioning posts correspond to the plurality of positioning holes one by one.

[0015] Furthermore, an anti-slip layer is fixedly installed on the inner wall of the semi-tube body.

[0016] Furthermore, the spring is sleeved on the slide rod, and two ends of the spring are in contact with the side plate and the baffle respectively.

[0017] Furthermore, the axis center line of the semicircular guide ring and the axis center line of the semi-toothed ring are both colinear with the axis center line of the half tube body.

[0018] Beneficial effects of the present invention: The present invention provides a pipeline positioning welding device for a tunnel. Two clamping mechanisms clamp the second pipeline, and the second pipeline enters the tunnel under the cooperation of the vehicle and the lifting mechanism. Then the vehicle moves, and under the action of the two guide mechanisms, the second pipeline automatically aligns and contacts with the first pipeline. Then the welding mechanism performs a circular welding operation on the contact position between the first pipeline and the second pipeline, so the present device can automatically weld between pipelines located in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention at the first viewing angle;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention at a second viewing angle;

[0021] Figure 3 It is a front view structural schematic diagram of the present invention;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of the clamping mechanism;

[0023] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0024] Figure 6 It is a front view structural schematic diagram of the clamping mechanism;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of one half funnel of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of another half funnel in the present invention;

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the first pipeline and the second pipeline.

[0028] Figure numerals: 11-first pipeline, 12-second pipeline, 20-lifting mechanism, 21-transverse plate, 22-lifting plate, 23-guide rod, 24-cylinder, 25-side plate, 26-connecting plate, 27-guide groove, 30-guide mechanism, 31-slider, 32-slide rod, 33-semi-funnel, 331-semi-bucket body, 332-semi-insertion pipe, 34-baffle, 35-spring, 36-electromagnet, 37-iron block, 38-positioning hole, 39-positioning column, 40-clamping mechanism, 41-longitudinal plate, 42-semi-tube body, 43-fixed plate, 50-guide assembly, 51-semicircular guide ring, 52-semi-tooth ring, 60-welding assembly, 61-movable block, 62-welding gun, 63-motor, 64-gear. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] In this application, unless otherwise clearly specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0033] like Figure 1-Figure 9 As shown, the present invention provides a pipeline positioning welding device for a tunnel, which is used in conjunction with a vehicle and is used to weld a first pipeline 11 and a second pipeline 12. The first pipeline 11 is located in the tunnel and its position is fixed and cannot be moved. The second pipeline 12 needs to be welded to the first pipeline 11 through the device. The device includes a lifting mechanism 20, two guide mechanisms 30, two clamping mechanisms 40 and a welding mechanism.

[0034] The lifting mechanism 20 includes a transverse plate 21, a lifting plate 22, a guide rod 23 and a cylinder 24. The transverse plate 21 is detachably connected to the vehicle via a connecting plate 26. Side plates 25 are fixedly mounted at the bottom of both ends of the transverse plate 21, and guide grooves 27 extending longitudinally and penetrating transversely are provided on the side plates 25. The lifting plate 22 is transversely arranged below the transverse plate 21. The guide rod 23 passes through the transverse plate 21 longitudinally and is slidably connected to the transverse plate 21, and the guide rod 23 is fixedly connected to the lifting plate 22. The cylinder 24 is arranged longitudinally, the cylinder body of the cylinder 24 is fixedly connected to the transverse plate 21, the piston end of the cylinder 24 is fixedly connected to the lifting plate 22, and the cylinder 24 is electrically connected to an external control cabinet for controlling the lifting plate 22 to move closer to or away from the transverse plate 21.

[0035] The two guide mechanisms 30 are arranged in mirror symmetry and correspond to the two side plates 25 one by one. The guide mechanism 30 includes a slider 31, a slide bar 32, a half funnel 33, a baffle 34 and a spring 35. The slider 31 is arranged in the guide groove 27 and is in sliding contact with the inner wall of the guide groove 27. The slide bar 32 passes through the slider 31 in the transverse direction and is slidably connected to the slider 31. The half funnel 33 is fixedly installed on the inner end of the slide bar 32 in the transverse direction. The half funnel 33 includes a half bucket body 331 and a half insert tube 332, and the inner diameter of the half insert tube 332 is the same as the outer diameter of the first pipe 11. The baffle 34 is fixedly installed on the slide bar 32. The spring 35 makes the slide bar 32 have a tendency to move inward.

[0036] It is worth noting that when the two half funnels 33 are in contact with each other, a complete funnel will be formed. At this time, the two half funnel bodies 331 are in contact with each other to form a complete funnel body, and the two insert tubes are in contact with each other to form a complete insert tube.

[0037] The two clamping mechanisms 40 are arranged in mirror symmetry and correspond to the two guide mechanisms 30 one by one. The two clamping mechanisms 40 cooperate to clamp the second pipe 12. The clamping mechanisms 40 follow the sliding rod 32 and move synchronously.

[0038] The welding mechanism is used to perform annular welding operation on the contact position between the first pipe 11 and the second pipe 12 .

[0039] In the initial state, under the action of the spring 35, the two half funnels 33 are in contact with each other to form a complete funnel.

[0040] Before using the device, the staff first moves the vehicle to the side of the tunnel and clamps the second pipe 12 through the two clamping mechanisms 40.

[0041] The specific use process of this device is:

[0042] In the first step, the staff controls the cylinder 24 to extend through the external control cabinet, and then the lifting plate 22 moves downward until the funnel is roughly aligned with the first pipe 11.

[0043] In the second step, the staff controls the vehicle to move toward the direction close to the first pipe 11, and the inner wall of the funnel body will contact the first pipe 11. Due to the force of the first pipe 11, the slide bar 32 will move left and right, and the slide block 31 will move up and down. When the first pipe 11 enters the cannula, the axis of the second pipe 12 is just aligned with the axis of the first pipe 11. At this time, the vehicle continues to move toward the direction close to the first pipe 11 until the second pipe 12 contacts the first pipe 11.

[0044] In the third step, the welding mechanism performs a circular welding operation on the contact position between the first pipe 11 and the second pipe 12. After the circular welding operation is completed, the vehicle is moved away from the first pipe 11. When the device is out of contact with the first pipe 11 and the second pipe 12, the external control cabinet controls the cylinder 24 to contract and the device can be removed from the first pipe 11 and the second pipe 12.

[0045] The technical effects achieved by the device are: 1. By utilizing the guiding characteristics of the funnel, under the action of the two guiding mechanisms 30, the positions of the two clamping mechanisms 40 and the second pipe 12 are automatically adjusted in the left-right direction and the up-down direction, so that the axis of the second pipe 12 is quickly and accurately aligned with the axis of the first pipe 11. 2. During the entire working process, the staff does not need to go down into the tunnel, and the device can automatically weld the pipes located in the tunnel, which is safer and more efficient.

[0046] In one embodiment, the clamping mechanism 40 includes a longitudinal plate 41 and a half-tube 42. The longitudinal plate 41 is disposed at the rear side of the half-tube 332 and is fixedly connected to the slide bar 32 via a fixing plate 43. The half-tube 42 is fixedly mounted on the longitudinal plate 41 in the transverse direction, the inner diameter of the half-tube 42 is the same as the outer diameter of the second pipe 12, and the axis of the half-tube 42 is colinear with the axis of the half-tube 332.

[0047] In the initial state, due to the action of the spring 35 , the two half tube bodies 42 are in contact with each other to form a complete tube body, thereby clamping the second pipe 12 .

[0048] Before using the device, the staff first moves the vehicle to the side of the tunnel and pulls the two slide bars 32 outward at the same time, and the two half-tube bodies 42 will move away from each other. At this time, the staff puts the second pipe 12 between the two half-tube bodies 42 and releases the slide bar 32. Under the action of the spring 35, the two half-tube bodies 42 will clamp the second pipe 12.

[0049] This design has the following advantages: when the welding operation is completed, the staff can control the two slide bars 32 to move outward at the same time, and then the two half funnels 33 will be out of contact, and the two half pipe bodies 42 will also be out of contact. At this time, the staff can control the cylinder 24 to shrink through the control cabinet, and the device will be removed from the first pipe 11 and the second pipe 12.

[0050] This design allows the device to be quickly removed from the first pipe 11 and the second pipe 12 after the welding operation is completed, thereby avoiding the problem that the device is difficult or impossible to remove from the first pipe 11 and the second pipe 12 due to the length of the second pipe 12.

[0051] In one embodiment, the welding mechanism includes two guide assemblies 50 and one welding assembly 60 .

[0052] The two guide assemblies 50 are arranged in mirror symmetry and are respectively arranged on the two longitudinal plates 41. The guide assembly 50 includes a semicircular guide ring 51 and a semi-toothed ring 52. The semicircular guide ring 51 and the semi-toothed ring 52 are both fixedly mounted on the longitudinal plate 41.

[0053] The welding assembly 60 includes a movable block 61, a welding gun 62, a motor 63 and a gear 64. The movable block 61 is disposed on the semicircular guide ring 51 and is slidably connected to the semicircular guide ring 51. The welding gun 62 and the motor 63 are both fixedly mounted on the movable block 61 and are both electrically connected to an external control cabinet. The gear 64 is fixedly mounted on the output shaft of the motor 63 and is meshed with the half gear ring 52.

[0054] In the initial state, due to the action of the spring 35, the two semicircular guide rings 51 contact together to form a complete circular guide ring; the two half gear rings 52 contact together to form a complete gear ring.

[0055] The specific process of the annular welding operation is as follows: when the second pipe 12 contacts the first pipe 11, the external control cabinet controls the motor 63 and the welding gun 62 to start at the same time, and the welding gun 62 sprays flames to weld the contact portion between the second pipe 12 and the first pipe 11. At the same time, the motor 63 drives the gear 64 to rotate. Under the action of the gear ring, the movable block 61 drives the welding gun 62 to move along the circular guide ring, thereby performing an annular welding operation on the contact position between the first pipe 11 and the second pipe 12.

[0056] When the welding operation is completed, the staff can control the two slide bars 32 to move outward at the same time. At this time, the two semicircular guide rings 51 will be out of contact, and the two half gear rings 52 will also be out of contact, which will not affect the rapid removal of the device from the first pipe 11 and the second pipe 12.

[0057] In one embodiment, the guide mechanism 30 further includes an electromagnet 36 and an iron block 37. The electromagnet 36 and the iron block 37 are arranged in mirror symmetry. The electromagnet 36 is fixedly mounted on the slider 31 and electrically connected to the external control cabinet, and the iron block 37 is fixedly mounted on the baffle 34.

[0058] In the initial state, the electromagnet 36 is in a power-off state.

[0059] When the device needs to be quickly removed from the first pipe 11 and the second pipe 12, the staff energizes the electromagnet 36 through the external control cabinet, and the electromagnet 36 will adsorb the iron block 37, and the baffle 34 will drive the slide bar 32 outward. At this time, the two slide bars 32 will move outward at the same time, making it easy to quickly remove the device from the first pipe 11 and the second pipe 12.

[0060] In one embodiment, a plurality of positioning holes 38 are opened on the inner side surface of one of the half funnels 33 , and a plurality of positioning posts 39 are fixedly installed on the inner side surface of the other half funnel 33 , and the plurality of positioning posts 39 correspond to the plurality of positioning holes 38 one by one.

[0061] In an initial state, the plurality of positioning posts 39 are respectively inserted into the plurality of positioning holes 38 .

[0062] This design ensures that the two half funnels 33 will not be misaligned during the third step, thereby improving the accuracy and stability of the device.

[0063] In one embodiment, an anti-slip layer is fixedly mounted on the inner wall of the half pipe body 42 , so that the two clamping mechanisms 40 clamp the second pipe 12 more stably.

[0064] In one embodiment, the spring 35 is sleeved on the slide bar 32 , and two ends of the spring 35 are in contact with the side plate 25 and the baffle 34 respectively.

[0065] In one embodiment, the axis center line of the semicircular guide ring 51 and the axis center line of the semi-toothed ring 52 are both in line with the axis center line of the semi-tube body 42. In this way, the welding effect is more uniform during the annular welding operation.

[0066] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0067] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pipeline positioning welding device for a tunnel, used in conjunction with a vehicle, for welding a first pipeline and a second pipeline, characterized in that: include: A lifting mechanism, the lifting mechanism comprising a transverse plate, a lifting plate, a guide rod and a cylinder, the transverse plate is detachably connected to the vehicle, side plates are fixedly mounted at the bottoms of both ends of the transverse plate, the side plates are provided with guide grooves extending in the longitudinal direction, the lifting plate is transversely arranged below the transverse plate, the guide rod passes through the transverse plate in the longitudinal direction and is slidably connected to the transverse plate, the guide rod is fixedly connected to the lifting plate, and the cylinder is used to control the lifting plate to approach or move away from the transverse plate; Two guide mechanisms, the two guide mechanisms are arranged in mirror symmetry and correspond to the two side plates one by one, the guide mechanism comprises a slider, a slide bar, a half funnel, a baffle and a spring, the slider is arranged in the guide groove and is in sliding contact with the inner wall of the guide groove, the slide bar passes through the slider in the transverse direction and is slidably connected with the slider, the half funnel is fixedly installed on the inner end of the slide bar, the half funnel comprises a half bucket body and a half insert tube, the inner diameter of the half insert tube is the same as the outer diameter of the first pipeline, the baffle is fixedly installed on the slide bar, and the spring makes the slide bar have a tendency to move inward; Two clamping mechanisms, the two clamping mechanisms are arranged in mirror symmetry and correspond to the two guide mechanisms one by one, the two clamping mechanisms are used to clamp the second pipe, and the clamping mechanisms move synchronously with the sliding rod; A welding mechanism is used to perform an annular welding operation on the contact position between the first pipeline and the second pipeline.

2. A pipeline positioning welding device for tunnels according to claim 1, characterized in that: The clamping mechanism includes a longitudinal plate and a half-tube body, wherein the longitudinal plate is arranged on the rear side of the half-tube and is fixedly connected to the sliding rod, and the half-tube body is fixedly mounted on the longitudinal plate, the inner diameter of the half-tube body is the same as the outer diameter of the second pipe, and the axis of the half-tube body is collinear with the axis of the half-tube.

3. A pipeline positioning welding device for tunnels according to claim 2, characterized in that: The welding mechanism comprises two guide assemblies and a welding assembly; The two guide assemblies are arranged in mirror symmetry and are respectively arranged on the two longitudinal plates, and the guide assemblies include a semicircular guide ring and a semi-toothed ring, and the semicircular guide ring and the semi-toothed ring are both fixedly mounted on the longitudinal plate; The welding assembly includes a movable block, a welding gun, a motor and a gear. The movable block is arranged on the semicircular guide ring and is slidably connected to the semicircular guide ring. The welding gun and the motor are both fixedly mounted on the movable block. The gear is fixedly mounted on the output shaft of the motor and meshes with the semi-toothed ring.

4. A pipeline positioning welding device for tunnels according to claim 3, characterized in that: The guide mechanism also includes an electromagnet and an iron block. The electromagnet and the iron block are arranged in a mirror-symmetrical manner. The electromagnet is fixedly mounted on the slider, and the iron block is fixedly mounted on the baffle.

5. The pipeline positioning welding device for tunnel according to claim 1 is characterized in that: A plurality of positioning holes are opened on the inner side surface of one of the half funnels, and a plurality of positioning posts are fixedly installed on the inner side surface of the other half funnel, and the plurality of positioning posts correspond to the plurality of positioning holes one by one.

6. A pipeline positioning welding device for tunnels according to claim 2, characterized in that: An anti-slip layer is fixedly installed on the inner wall of the semi-tube body.

7. A pipeline positioning welding device for tunnels according to claim 1, characterized in that: The spring is sleeved on the slide rod, and two ends of the spring are in contact with the side plate and the baffle respectively.

8. A pipeline positioning welding device for tunnels according to claim 4, characterized in that: The axis center line of the semicircular guide ring and the axis center line of the semi-toothed ring are both colinear with the axis center line of the semi-tube body.

Images