Fixture for building heating and ventilation pipe welding

Abstract

The utility model relates to the technical field of building heating and ventilation pipe welding equipment, in particular to a building heating and ventilation pipe welding clamp which comprises a support, rotating shafts are rotationally connected to the left end and the right end of the interior of the support, and supporting plates are fixedly connected to the opposite ends of the two rotating shafts. The opposite faces of the two supporting plates are each provided with two clamping mechanisms distributed front and back, each clamping mechanism comprises a sleeve penetrating through and rotationally connected to the outer wall of the corresponding supporting plate, and the end, close to the corresponding rotating shaft, of each sleeve is fixedly connected with a baffle ring attached to the outer wall of the corresponding supporting plate. Two symmetrically-distributed supporting blocks are fixedly connected to the outer wall of the baffle ring, and 360-degree all-circumferential welding of the pipeline is achieved, the rotating shaft is matched with the gear transmission system, the clamping mechanism is driven to synchronously rotate, the clamped pipeline can freely rotate around the axis, the accessibility of a weld joint in all directions is guaranteed, and a welding blind area of a traditional fixing clamp is eliminated.

Description

Technical Field

[0001] This utility model relates to the technical field of welding equipment for building HVAC pipes, and specifically discloses a fixture for welding building HVAC pipes. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) ducts are channels used to transport heat media within buildings. The thickness and specifications of HVAC ducts can vary depending on requirements. Typically, during connection, both ends of the duct are externally attached to fittings. HVAC duct joints are usually secured using welding.

[0003] A clamp for welding building HVAC pipes, Chinese Patent No. CN221087858U, includes clamping block A, clamping block B, and an arc-shaped support plate. Clamping blocks A and B are arranged sequentially from bottom to top. Clamping blocks A and B are connected by an adjustment structure. Clamping slots are respectively formed in the middle of opposite sides of clamping blocks A and B. The arc-shaped support plate is fixed to the outside of clamping block A. The inner circle of the arc-shaped support plate is aligned with the inner circle of the clamping slot on clamping block A. This invention has the advantage of supporting the pipe portion located outside the clamping area by extending a support distance from the arc-shaped support plate during the pipe clamping and positioning process, thus keeping the pipe horizontal during clamping.

[0004] The above-mentioned device can clamp and support the pipe to keep it horizontal, but there are still several problems in its use;

[0005] (1) No device is provided to allow the pipe to rotate. When the pipe needs to be rotated 360 degrees for welding, the direction of the pipe needs to be manually adjusted.

[0006] (2) With only one clamping component, after welding a workpiece, it is necessary to disassemble the welded pipe fittings and then install the pipe fittings to be welded. The operation is time-consuming. Therefore, a building HVAC pipe welding clamp is needed to solve this problem. Utility Model Content

[0007] This utility model proposes a clamp for welding building HVAC pipes, which facilitates the rotation of pipes and enables 360-degree welding. Furthermore, by using two sets of clamping mechanisms alternately, it reduces the time wasted on disassembling and installing pipe fittings.

[0008] This utility model is implemented as follows: a fixture for welding building HVAC pipes includes a bracket. Rotary shafts are rotatably connected to both the left and right ends of the bracket. Support plates are fixedly connected to opposite ends of the two rotating shafts. Two clamping mechanisms, distributed front to back, are provided on opposite sides of the two support plates. Each clamping mechanism includes a sleeve that passes through and is rotatably connected to the outer wall of the support plate. A retaining ring that fits against the outer wall of the support plate is fixedly connected to one end of the sleeve near the rotating shaft. Two symmetrically distributed support blocks are fixedly connected to the outer wall of the retaining ring. Electric actuators are installed on opposite sides of the two support blocks. The output ends of the two electric actuators pass through the support blocks and are fixedly connected to clamping blocks.

[0009] Two support shafts are connected through and rotatably between the two support plates. Two driving gears are fixedly connected to the outer walls of the two support shafts. Driven gears are fixedly connected to the outer walls of the multiple driving gears. Two clamping mechanisms are symmetrically distributed on the left and right as a group.

[0010] As a preferred fixture for welding building HVAC pipes according to this utility model, two L-shaped plates are fixedly connected to the outer wall of the support plate located at the left end, and a first motor with its output end fixedly connected to the two support shafts is installed on the outer wall of each of the two L-shaped plates.

[0011] As a preferred embodiment of the building HVAC pipe welding fixture of this utility model, a second motor is installed at the left end of the bracket, and the output end of the second motor passes through the bracket and is fixedly connected to the rotating shaft located at the left end.

[0012] As a preferred embodiment of the building HVAC pipe welding fixture of this utility model, the end of the sleeve away from the rotating shaft is fixedly connected to a limiting ring whose outer wall fits against the support plate.

[0013] As a preferred embodiment of the building HVAC pipe welding fixture of this utility model, V-shaped grooves are provided on the opposite sides of the two clamping blocks.

[0014] As a preferred embodiment of the building HVAC pipe welding fixture of this utility model, the outer walls of both clamping blocks are in contact with the outer wall of the retaining ring.

[0015] As a preferred embodiment of the building HVAC pipe welding fixture of this utility model, a controller is installed at the left end of the bracket.

[0016] The beneficial effects of this utility model are:

[0017] 1. Achieve 360° full-range welding of pipelines: Through the cooperation of the rotating shaft and gear transmission system, the clamping mechanism is driven to rotate synchronously, so that the clamped pipeline can rotate freely around the axis, ensuring the accessibility of the weld in all directions and eliminating the welding blind spots of traditional fixed clamps.

[0018] 2. Dual-station alternating operation improves efficiency: The clamping mechanism groups distributed symmetrically on the left and right form independent workstations, and adopt a parallel "welding-clamping" working mode to improve welding efficiency. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is an overall structural diagram of the fixture for welding building HVAC pipes according to this utility model;

[0021] Figure 2 This is a left-side structural view of the present invention;

[0022] Figure 3 This is a top view of the structure of this utility model;

[0023] Figure 4 This is a partial structural diagram of the present invention.

[0024] The markings in the diagram are: 1. Bracket; 2. Rotating shaft; 3. Retaining ring; 4. Driven gear; 5. Support block; 6. Electric actuator; 7. Clamping block; 8. Support shaft; 9. Drive gear; 10. L-shaped plate; 11. First motor; 12. Second motor; 13. Support plate; 14. Sleeve; 15. Limiting ring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0026] Please see Figure 1-4 A fixture for welding building HVAC pipes includes a bracket 1. The bracket 1 has a rotating shaft 2 rotatably connected to both the left and right ends. The two rotating shafts 2 are fixedly connected to the opposite ends of the two rotating shafts 2. The two support plates 13 are provided with two clamping mechanisms distributed front and back on their opposite sides. The clamping mechanism includes a sleeve 14 that passes through and is rotatably connected to the outer wall of the support plate 13. The sleeve 14 is fixedly connected to a retaining ring 3 that fits against the outer wall of the support plate 13 at the end near the rotating shaft 2. The outer wall of the retaining ring 3 is fixedly connected to two symmetrically distributed support blocks 5. Electric push rods 6 are installed on the opposite sides of the two support blocks 5. The output ends of the two electric push rods 6 pass through the support blocks 5 and are fixedly connected to clamping blocks 7.

[0027] Two support shafts 8 are connected through and rotatably between the two support plates 13. Two driving gears 9 are fixedly connected to the outer walls of the two support shafts 8. The outer walls of the multiple driving gears 9 are meshed with driven gears 4 fixedly connected to the outer wall of the retaining ring 3. The two clamping mechanisms symmetrically distributed on the left and right form a group.

[0028] In this embodiment: the two pipe sections to be welded are placed inside the two sleeves 14 distributed on the left and right, and the opposite sides of the two pipe sections are put together (that is, at the weld seam). Then, the two corresponding electric actuators 6 are activated to drive the two clamping blocks 7 connected to them to move relative to each other, clamping the pipe inside the sleeve 14 in the center. The second motor 12 drives the left end rotating shaft 2 and the two support plates 13 to rotate 180 degrees. At this time, the joint of the clamped two pipe sections can be welded by external welding equipment. At the same time, the workers pre-place the pipe to be welded on another set of clamping mechanisms according to the same installation steps. The "welding-clamping" parallel working mode is adopted to improve the welding efficiency.

[0029] As a technical optimization of this utility model, two L-shaped plates 10 are fixedly connected to the outer wall of the left end support plate 13, and the outer walls of the two L-shaped plates 10 are each equipped with a first motor 11 whose output end is fixedly connected to the two support shafts 8 respectively.

[0030] In this embodiment, the support shaft 8 can be driven to rotate by the first motor 11.

[0031] As a technical optimization of this utility model, a second motor 12 is installed at the left end of the bracket 1, and the output end of the second motor 12 passes through the bracket 1 and is fixedly connected to the rotating shaft 2 located at the left end.

[0032] In this embodiment, the left-end rotating shaft 2 can be driven to rotate by the second motor 12.

[0033] As a technical optimization of this utility model, the end of the sleeve 14 away from the rotating shaft 2 is fixedly connected to a limiting ring 15 whose outer wall fits against the support plate 13.

[0034] In this embodiment, the sleeve 14 can be conveniently limited by the cooperation of the limiting ring 15 and the retaining ring 3 to prevent the sleeve 14 from moving left or right.

[0035] As a technical optimization of this utility model, V-shaped grooves are provided on the opposite sides of the two clamping blocks 7.

[0036] In this embodiment, V-shaped grooves are provided on the opposite sides of the two clamping blocks 7, which can facilitate the centered clamping of the pipe.

[0037] As a technical optimization of this utility model, the outer walls of both clamping blocks 7 are in contact with the outer wall of the retaining ring 3.

[0038] In this embodiment, the outer walls of both clamping blocks 7 are in contact with the outer wall of the retaining ring 3, which can increase the stability of the movement of the two clamping blocks 7.

[0039] As a technical optimization of this utility model, a controller is installed on the left end of the bracket 1.

[0040] In this embodiment, the controller is electrically connected to two first motors 11, a second motor 12, and a plurality of electric actuators 6, and the controller can control the operation of the two first motors 11, the second motor 12, and the plurality of electric actuators 6.

[0041] The working principle and usage process of this utility model are as follows: First, place the two pipe sections to be welded inside the two sleeves 14 distributed on the left and right sides, ensuring the opposite sides of the two pipe sections are aligned (i.e., at the weld seam). Then, activate the two corresponding electric actuators 6 to drive the two connected clamping blocks 7 to move relative to each other, clamping the pipes inside the sleeves 14 in the center. The second motor 12 drives the left-end rotating shaft 2, the two support plates 13, and the right-end rotating shaft 2 to rotate 180 degrees. At this point, the joint of the clamped two pipe sections can be welded using external welding equipment. Simultaneously, the operator places the pipes to be welded on another set of clamping mechanisms following the same installation steps. This "welding-clamping" parallel working mode improves welding efficiency.

[0042] It should be noted that the distance between the left and right ends inside bracket 1 is greater than the total length of the two pipe sections.

[0043] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A clamp for welding building HVAC pipes, including a support (1), characterized in that: The bracket (1) has a rotating shaft (2) rotatably connected to both the left and right ends inside. The two rotating shafts (2) are fixedly connected to a support plate (13) at opposite ends. The two support plates (13) are provided with two clamping mechanisms distributed front and back on opposite sides. The clamping mechanism includes a sleeve (14) that passes through and is rotatably connected to the outer wall of the support plate (13). The sleeve (14) is fixedly connected to a retaining ring (3) that fits against the outer wall of the support plate (13) at the end near the rotating shaft (2). The outer wall of the retaining ring (3) is fixedly connected to two symmetrically distributed support blocks (5). The two support blocks (5) are installed with electric push rods (6) on opposite sides. The output ends of the two electric push rods (6) pass through the support blocks (5) and are fixedly connected to clamping blocks (7). Two support shafts (8) are connected through and rotatably between the two support plates (13). Two drive gears (9) are fixedly connected to the outer walls of the two support shafts (8). The outer walls of the multiple drive gears (9) are meshed with driven gears (4) fixedly connected to the outer wall of the retaining ring (3). The two clamping mechanisms symmetrically distributed on the left and right are a group.

2. The fixture for welding building HVAC pipes according to claim 1, characterized in that: Two L-shaped plates (10) are fixedly connected to the outer wall of the support plate (13) located at the left end. The outer walls of the two L-shaped plates (10) are each equipped with a first motor (11) whose output end is fixedly connected to the two support shafts (8).

3. The fixture for welding building HVAC pipes according to claim 1, characterized in that: A second motor (12) is installed at the left end of the bracket (1). The output end of the second motor (12) passes through the bracket (1) and is fixedly connected to the rotating shaft (2) located at the left end.

4. The fixture for welding building HVAC pipes according to claim 1, characterized in that: The sleeve (14) is fixedly connected to a limiting ring (15) whose outer wall fits against the support plate (13) at the end away from the rotating shaft (2).

5. The fixture for welding building HVAC pipes according to claim 1, characterized in that: V-shaped grooves are provided on the opposite sides of the two clamping blocks (7).

6. The fixture for welding building HVAC pipes according to claim 1, characterized in that: The outer walls of both clamping blocks (7) are in contact with the outer wall of the retaining ring (3).

7. The fixture for welding building HVAC pipes according to claim 1, characterized in that: A controller is installed on the left end of the bracket (1).

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