A hoisting device for welding heat exchangers

Abstract

This utility model discloses a hoisting device for welding heat exchangers, belonging to the field of heat exchanger technology. The hoisting device includes a movable frame and a hydraulic cylinder rotatably mounted on the top of the movable frame. A hoisting mechanism is fixedly connected to the output end of the hydraulic cylinder. A sliding seat is fitted onto the surface of the hydraulic cylinder, and a fixing mechanism is fixedly connected to one side of the sliding seat. A support plate is fixedly connected to the side wall of the sliding seat, and a worm gear is rotatably connected to it via a bearing. A worm wheel is meshed with the surface of the worm gear. This utility model, through the cooperation of the support plate, worm gear, worm wheel, and rack, allows the vertical height of the sliding seat and fixing mechanism to be changed. By adjusting the height of the fixing mechanism, the heat exchanger can be clamped at different positions, thus avoiding the problem of clamping and fixing the heat exchanger due to varying hoisting heights, further improving the applicability of the hoisting device.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically, it relates to a hoisting device for welding heat exchangers. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid. Heat exchangers play a vital role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers are widely used as heaters, coolers, condensers, evaporators, and reboilers.

[0003] In the prior art, patent announcement number CN221459628U, entitled "A Lifting Device for Heat Exchanger Welding," the device includes a base plate. A U-shaped plate is fixedly connected to the top of the base plate. Electric lifting rods are installed on both the left and right sides of the bottom of the U-shaped plate. Hooks are fixedly connected to the bottom of the electric lifting rods. A mounting plate is fixedly connected to the upper rear end of the base plate, and a connecting plate is fixedly connected to the middle rear end of the base plate. A fixing mechanism is provided on the inner side of the U-shaped plate. This lifting device for heat exchanger welding uses hooks to hook and lift the heat exchanger welding components. A servo motor drives a bidirectional threaded rod to rotate, causing the connecting rod and the fixing block to tighten inwards, thus clamping and fixing the heat exchanger welding components. This improves the accuracy of welding heat exchanger components, thereby improving the production quality of the heat exchanger and solving the problem of potential positional displacement of the heat exchanger due to the lack of a fixing structure.

[0004] Although the aforementioned patent can clamp and fix the heat exchanger, the lifting height of the heat exchanger is inconsistent each time, which can easily cause problems in clamping and fixing due to different lifting heights of the heat exchanger, further reducing the applicability of the lifting device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a hoisting device for welding heat exchangers that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: a hoisting device for welding heat exchangers, including a movable frame, and further including: a hydraulic cylinder rotating on the top of the movable frame, the output end of the hydraulic cylinder being fixedly connected to a hoisting mechanism, a sliding seat being sleeved on the surface of the hydraulic cylinder, and a fixing mechanism being fixedly connected to one side of the sliding seat; wherein a support plate is fixedly connected to the side wall of the sliding seat, and a worm gear is rotatably connected to the inside of the support plate through a bearing, the surface of the worm gear being meshed with a worm wheel, the worm wheel being rotatably connected to the inside of the support plate through a rotating shaft, and a rack being fixedly connected to the side wall of the hydraulic cylinder, the surface of the worm wheel being meshed with the surface of the rack.

[0007] Preferably, the fixing mechanism includes a fixing frame fixedly connected to one side of the sliding seat, and a bidirectional lead screw is rotatably connected to the inner side of the fixing frame via a bearing. Two movable seats are threadedly connected to the surface of the bidirectional lead screw, and clamping plates are fixedly connected to the ends of the two movable seats.

[0008] Preferably, a guide rod is fixedly connected to the inner side of the fixed frame, and a movable seat is slidably connected to the surface of the guide rod.

[0009] Preferably, one end of the bidirectional lead screw passes through the fixed frame and extends outward to be fixedly connected to a throttle handle, the surface of which is provided with anti-slip texture.

[0010] Preferably, the hoisting mechanism includes a crossbeam fixed to the output end of the hydraulic cylinder, a fixed seat fixedly connected to the bottom of the crossbeam, an adjusting plate slidably connected inside the fixed seat, and a hook fixedly connected to the bottom of the adjusting plate.

[0011] Preferably, a weighted frame is fixedly connected to the top of the mobile frame, and the weighted frame is arranged in two symmetrical sets.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0013] This lifting device for welding heat exchangers, through the cooperation of the support plate, worm, worm wheel and rack, can change the vertical height of the sliding seat and the fixing mechanism. By changing the height of the fixing mechanism, the heat exchanger can be clamped at different positions, thus avoiding the problem of not being able to clamp and fix the heat exchanger due to different lifting heights, and further improving the applicability of the lifting device. Attached Figure Description

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of a hoisting device for welding heat exchangers proposed in this utility model;

[0016] Figure 2 This utility model proposes a hoisting device for welding heat exchangers. Figure 1 Schematic diagram of the structure at point A;

[0017] Figure 3 This is a schematic diagram of the fixing mechanism of a hoisting device for welding heat exchangers proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the left side of a hoisting device for welding heat exchangers proposed in this utility model.

[0019] In the diagram: 1. Moving frame; 11. Weighted frame; 2. Hydraulic cylinder; 3. Lifting mechanism; 31. Crossbeam; 32. Fixed seat; 33. Adjusting plate; 34. Hook; 4. Sliding seat; 41. Support plate; 42. Worm gear; 43. Worm wheel; 44. Rack; 5. Fixing mechanism; 51. Fixed frame; 52. Double-acting screw; 53. Moving seat; 54. Clamping plate; 55. Guide rod; 56. Throttle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model. Example 1:

[0021] Reference Figures 1-4 A lifting device for welding heat exchangers includes a movable frame 1 and a hydraulic cylinder 2 rotatably mounted on the top of the movable frame 1. A lifting mechanism 3 is fixedly connected to the output end of the hydraulic cylinder 2. A sliding seat 4 is fitted onto the surface of the hydraulic cylinder 2, and a fixing mechanism 5 is fixedly connected to one side of the sliding seat 4. A support plate 41 is fixedly connected to the side wall of the sliding seat 4, and a worm gear 42 is rotatably connected to its interior via a bearing. A worm wheel 43 is meshed with the surface of the worm gear 42, and the worm wheel 43 is rotatably connected to the interior of the support plate 41 via a rotating shaft. A rack 44 is fixedly connected to the side wall of the hydraulic cylinder 2, and the worm wheel 43 is meshed with the surface of the rack 44. The lifting mechanism 3 includes a crossbeam 31 fixed to the output end of the hydraulic cylinder 2. A fixing seat 32 is fixedly connected to the bottom of the crossbeam 31. An adjusting plate 33 is slidably connected to the interior of the fixing seat 32, and a hook 34 is fixedly connected to the bottom of the adjusting plate 33. A weighted frame 11 is fixedly connected to the top of the movable frame 1, and two sets of weighted frames 11 are symmetrically arranged.

[0022] In this utility model, during use, the lifting mechanism 3 is first driven by the hydraulic cylinder 2 at the top of the movable frame 1 to perform lifting and lowering operations. When the lifting mechanism 3 descends, it can hook the heat exchanger. Then, the hydraulic cylinder 2 drives the lifting mechanism 3 to rise, lifting the heat exchanger. Then, the surface of the lifted heat exchanger can be clamped and fixed by the working of the side wall fixing mechanism 5 of the sliding seat 4 on the surface of the hydraulic cylinder 2. Since the height of the heat exchanger is not consistent each time it is lifted, the fixing mechanism 5 cannot effectively clamp the surface of the heat exchanger. At this time, the worm 42 connected by the support plate 41 rotates, thereby driving the worm wheel 43 to move on the surface of the rack 44, thereby changing the vertical height of the sliding seat 4 and the fixing mechanism 5. By changing the height of the fixing mechanism 5, the heat exchanger can be clamped at different positions, thus avoiding the problem of not being able to clamp and fix the heat exchanger due to different lifting heights, and further improving the applicability of the lifting device.

[0023] With the fixed seat 32 at the bottom of the crossbeam 31, the adjusting plate 33 can be adjusted left and right inside the fixed seat 32 to change the distance between the bottom hooks 34 of the adjusting plate 33, so as to be suitable for lifting work at different heat exchanger lifting lug positions. Furthermore, with the addition of the top weight frame 11 of the movable frame 1, counterweights can be added inside to ensure the overall stability of the movable frame 1.

[0024] As can be further explained, the hydraulic cylinder 2 and the moving frame 1 are connected by bearings, which allows the heat exchanger to rotate in different directions. Example 2:

[0025] Reference Figure 3 Similar to Embodiment 1, but further: the fixing mechanism 5 includes a fixing frame 51 fixedly connected to one side of the sliding seat 4. A bidirectional lead screw 52 is rotatably connected to the inner side of the fixing frame 51 via a bearing. Two movable seats 53 are threadedly connected to the surface of the bidirectional lead screw 52. Clamping plates 54 are fixedly connected to the ends of the two movable seats 53. A guide rod 55 is fixedly connected to the inner side of the fixing frame 51. The movable seats 53 are slidably connected to the surface of the guide rod 55. One end of the bidirectional lead screw 52 passes through the fixing frame 51 and extends outward to be fixedly connected to a handle 56. Anti-slip texture is provided on the surface of the handle 56.

[0026] When fixing the heat exchanger with the fixing mechanism 5, the double-acting screw 52 inside the fixing frame 51 is rotated first. The rotation of the double-acting screw 52 can move the two sets of moving seats 53 closer or further apart. When the two sets of moving seats 53 are close together, they can clamp and fix heat exchangers of different sizes to ensure the stability of the heat exchanger and avoid the problem of welding displacement caused by shaking during the welding of the heat exchanger. With the setting of the clamping plate 54 on the surface of the moving seat 53, the force-bearing area can be increased to improve the clamping force when clamping the heat exchanger. With the setting of the guide rod 55, it is used to guide and limit the displacement of the moving seat 53. With the setting of the handle 56 at the end of the double-acting screw 52, ​​it is easy for the staff to operate manually, thereby reducing economic costs.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hoisting device for welding heat exchangers, comprising a movable frame (1), characterized in that, Also includes: The hydraulic cylinder (2) rotates on the top of the mobile frame (1). The output end of the hydraulic cylinder (2) is fixedly connected to the hoisting mechanism (3). The surface of the hydraulic cylinder (2) is fitted with a sliding seat (4). A fixing mechanism (5) is fixedly connected to one side of the sliding seat (4). The sliding seat (4) is fixedly connected to the side wall of the support plate (41), and the worm (42) is rotatably connected to the inside of the support plate (41) through the bearing. The worm (42) is meshed with the surface of the worm wheel (43), and the worm wheel (43) is rotatably connected to the inside of the support plate (41) through the rotating shaft. The hydraulic cylinder (2) is fixedly connected to the side wall of the rack (44), and the worm wheel (43) is meshed with the surface of the rack (44).

2. The hoisting device for welding a heat exchanger according to claim 1, characterized in that, The fixing mechanism (5) includes a fixing frame (51) fixedly connected to one side of the sliding seat (4). The inner side of the fixing frame (51) is rotatably connected to a two-way lead screw (52) via a bearing. The surface of the two-way lead screw (52) is threadedly connected to two moving seats (53). The ends of the two moving seats (53) are fixedly connected to clamping plates (54).

3. The hoisting device for welding a heat exchanger according to claim 2, characterized in that, A guide rod (55) is fixedly connected to the inner side of the fixed frame (51), and a movable seat (53) is slidably connected to the surface of the guide rod (55).

4. The hoisting device for welding a heat exchanger according to claim 2, characterized in that, One end of the bidirectional lead screw (52) passes through the fixed frame (51) and is fixedly connected to the handle (56) extending outwards. The surface of the handle (56) is provided with anti-slip texture.

5. The hoisting device for welding a heat exchanger according to claim 1, characterized in that, The hoisting mechanism (3) includes a crossbeam (31) fixed to the output end of the hydraulic cylinder (2), a fixed seat (32) is fixedly connected to the bottom of the crossbeam (31), an adjusting plate (33) is slidably connected inside the fixed seat (32), and a hook (34) is fixedly connected to the bottom of the adjusting plate (33).

6. The hoisting device for welding a heat exchanger according to claim 1, characterized in that, The top of the mobile frame (1) is fixedly connected to a weighted frame (11), and the weighted frame (11) is arranged in two symmetrical sets.

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