Braking resistor fan impeller dismounting tool

Abstract

The utility model relates to the field of impeller dismounting tools, and discloses a brake resistor fan impeller dismounting tool which comprises a hydraulic puller, an impeller mounting mechanism is arranged below the hydraulic puller, and the impeller mounting mechanism comprises a puller base, a linear sliding pad, a bolt groove, an impeller connecting bolt, a threaded through groove, a threaded ring and a sliding groove. According to the disassembling tool for the resistance fan impeller, through the arrangement of the impeller installation mechanism, before the resistance fan impeller is disassembled, the disassembling tool after the puller base and a hydraulic puller are installed is vertically placed above the resistance fan impeller, a follow-up user can disassemble the resistance fan impeller by shaking a hand rocker, and then the resistance fan impeller is disassembled. When the resistance fan impeller is pulled out, the output end of the hydraulic puller vertically moves upwards, so that the linear sliding pad and the fixed resistance fan impeller vertically move upwards, the transverse shearing force originally borne by the impeller connecting bolt is converted into the vertical drawing force in a hydraulic mode, the stress is uniform, and smooth pulling out of the resistance fan impeller is achieved.

Description

Technical Field

[0001] The utility model relates to the field of impeller disassembly tools, in particular to an impeller disassembly tool for a braking resistor fan. Background Technique

[0002] During the frame repair process of electric passenger cars, the frame repair process of the braking resistor fan needs to be disassembled as a whole, the impeller is pulled out, and the internal bearing of the motor is replaced. In the traditional process, there is a technical problem in the operation process that requires ensuring absolute verticality, such as the operation of pulling out the impeller during the frame repair or overhaul of electric passenger cars. Specifically, this problem involves the mechanical conditions borne by the bolts with a fixing function during the process of pulling out the impeller. In an ideal state, that is, when the operator can maintain absolute vertical operation, the bolts only need to bear the vertical tensile force.

[0003] However, in actual operation, if the operator cannot maintain an absolute vertical state during the operation, the bolts will additionally bear the transverse shear force. This transverse shear force may cause the bolts to break. Once the bolts break, the impeller cannot be smoothly pulled out, which will not only affect the smooth progress of the maintenance operation, but also may lead to the replacement of the entire fan, thus significantly increasing the maintenance cost and reducing the maintenance efficiency. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an impeller disassembly tool for a braking resistor fan, which solves the problem that the impeller of the resistor fan cannot be smoothly pulled out due to the transverse shear force.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: An impeller disassembly tool for a braking resistor fan includes a hydraulic puller. An impeller installation mechanism is arranged below the hydraulic puller. The impeller installation mechanism includes a puller base, a linear sliding pad, bolt grooves, impeller connection bolts, threaded through grooves and sliding grooves. Sliding grooves are respectively opened on the left and right sides at the lower end of the puller base. A linear sliding pad is slidably connected between the left and right two sliding grooves. A threaded through groove is opened in the middle of the linear sliding pad. Bolt grooves are arranged on both sides of the threaded through groove. Impeller connection bolts are respectively threadedly connected in the two bolt grooves. The lower ends of the two impeller connection bolts are respectively threadedly connected inside the impeller of the braking resistor fan.

[0006] Preferably, a second thread is arranged on the outer surface of the lower side of the output end of the hydraulic puller.

[0007] Preferably, a threaded ring is arranged on the inner side of the upper end of the puller base.

[0008] Preferably, a first thread is arranged on the outer surface of the lower end of the hydraulic puller.

[0009] Preferably, screw holes are opened at positions inside the impeller of the braking resistor fan opposite to the two impeller connection bolts.

[0010] Preferably, a hand pressure rod is provided at the upper end of the hydraulic puller.

[0011] Beneficial effects

[0012] The utility model provides a disassembly tool for a braking resistor fan impeller. Compared with the prior art, the following beneficial effects are achieved:

[0013] 1. In the utility model, through the arranged impeller installation mechanism, before disassembling the resistor fan impeller, the disassembly tool after installing the puller base and the hydraulic puller is vertically placed above the resistor fan impeller, and the puller base is inserted into the inside of the resistor fan impeller, so that the two bolt grooves of the puller base are opposite to the two screw holes inside the resistor fan impeller. Then, the two impeller connection bolts are tightened between the two screw holes and the bolt grooves. After that, the hydraulic puller is rotated to screw the thread at the output end of the hydraulic puller into the thread through groove of the puller base. Subsequently, the user rotates the hand rocker to vertically move the output end of the hydraulic puller upward, so that the linear sliding pad and the fixed resistor fan impeller move vertically upward. By using the hydraulic method, the original transverse shear force received by the impeller connection bolts is converted into a vertical tensile force, so that the force is uniform, and the resistor fan impeller is successfully pulled out;

[0014] 2. In the utility model, through the arranged first thread and second thread, before using the disassembly tool, the user places the hydraulic puller above the puller base, inserts the lower end of the hydraulic puller into the position of the upper thread ring of the puller base, and then completely screws it into the inside of the puller base by rotating the hydraulic puller. The user only needs a simple screwing operation to quickly complete the installation of the hydraulic puller and the puller base, greatly shortening the equipment assembly time. Description of the drawings

[0015] Figure 1 FIG. is a schematic structural diagram of the disassembly tool for a braking resistor fan impeller proposed by the utility model after being assembled with the resistor fan impeller;

[0016] Figure 2 FIG. is a schematic rear structural diagram of the disassembly tool for a braking resistor fan impeller proposed by the utility model before assembly;

[0017] Figure 3 FIG. is a schematic front structural diagram of the disassembly tool for a braking resistor fan impeller proposed by the utility model before assembly;

[0018] Figure 4 FIG. is a schematic structural diagram of the impeller installation mechanism in the disassembly tool for a braking resistor fan impeller proposed by the utility model.

[0019] Legend description:

[0020] 1. Hydraulic puller; 2. Resistance blower impeller; 3. Impeller installation mechanism; 301. Puller base; 302. Linear sliding pad; 303. Bolt groove; 304. Impeller connection bolt; 305. Threaded through groove; 306. Threaded ring; 307. Slide groove; 4. First thread; 5. Second thread. Specific implementation manner

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 - 4 , the present invention provides two technical solutions, specifically including the following embodiments:

[0023] Embodiment 1:

[0024] A disassembly tool for a braking resistance blower impeller includes a hydraulic puller 1, and the specific model of the hydraulic puller 1 is HCY-LM. It should be noted that the internal hydraulic drive method of the hydraulic puller 1 has been disclosed, and the prior art is cited here, so its internal structure is not described. An impeller installation mechanism 3 is arranged below the hydraulic puller 1. The impeller installation mechanism 3 includes a puller base 301, a linear sliding pad 302, a bolt groove 303, an impeller connection bolt 304, a threaded through groove 305 and a slide groove 307. Slide grooves 307 are opened on both the left and right sides at the lower end of the puller base 301. A linear sliding pad 302 is slidably connected between the left and right two slide grooves 307. A threaded through groove 305 is opened in the middle of the linear sliding pad 302. Bolt grooves 303 are arranged on both sides of the threaded through groove 305. Impeller connection bolts 304 are threadedly connected in the middle of the two bolt grooves 303. The lower ends of the two impeller connection bolts 304 are threadedly connected to the inside of the resistance blower impeller 2. A hand pressure rod is arranged at the upper end of the hydraulic puller 1.

[0025] During operation, before disassembling the resistor fan impeller 2, place the puller base 301 vertically above the resistor fan impeller 2 after installing the hydraulic puller 1 on the disassembly tooling, and insert the puller base 301 into the interior of the resistor fan impeller 2, aligning the two bolt slots 303 of the puller base 301 with the two screw holes inside the resistor fan impeller 2. Then, tighten the two impeller connection bolts 304 between the two screw holes and the bolt slots 303. After that, turn the hydraulic puller 1 to screw the thread at the output end of the hydraulic puller 1 into the threaded through slot 305 of the puller base 301. Subsequently, the user rotates the hand crank to vertically move the output end of the hydraulic puller 1 upward, so that the linear sliding pad 302 together with the fixed resistor fan impeller 2 moves vertically upward. By hydraulic means, the original lateral shear force on the impeller connection bolt 304 is converted into a vertical tensile force, making the force evenly distributed and achieving the smooth pulling out of the resistor fan impeller 2.

[0026] Embodiment 2:

[0027] Based on Embodiment 1, a second thread 5 is provided on the outer surface of the lower side of the output end of the hydraulic puller 1, a threaded ring 306 is provided on the inner side of the upper end of the puller base 301, a first thread 4 is provided on the outer surface of the lower end of the hydraulic puller 1, and screw holes are provided at positions inside the resistor fan impeller 2 opposite to the two impeller connection bolts 304. Before using the disassembly tooling, the user places the hydraulic puller 1 above the puller base 301, inserts the lower end of the hydraulic puller 1 into the position of the threaded ring 306 at the upper end of the puller base 301, and then completely screws it into the interior of the puller base 301 by turning the hydraulic puller 1. The user only needs a simple turning operation to quickly complete the installation of the hydraulic puller 1 and the puller base 301, greatly shortening the equipment assembly time.

[0028] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the application shall be included in the protection scope of the present application.

Claims

1. A disassembly tool for the impeller of a braking resistor fan, comprising a hydraulic puller (1), characterized in that: Below the hydraulic puller (1) is provided with an impeller mounting mechanism (3). The impeller mounting mechanism (3) includes a puller base (301), a linear sliding pad (302), bolt grooves (303), impeller connecting bolts (304), threaded through grooves (305) and sliding grooves (307). On both the left and right sides of the lower end of the puller base (301), sliding grooves (307) are opened. A linear sliding pad (302) is slidably connected between the left and right sliding grooves (307). A threaded through groove (305) is opened in the middle of the linear sliding pad (302). Bolt grooves (303) are provided on both sides of the threaded through groove (305). Impeller connecting bolts (304) are threadedly connected in the middle of the two bolt grooves (303). The lower ends of the two impeller connecting bolts (304) are threadedly connected to the inside of the resistor blower impeller (2).

2. The disassembly tooling for the impeller of a braking resistor fan according to claim 1, wherein: On the outer surface of the lower side of the output end of the hydraulic puller (1) is provided with a second thread (5) that matches the threaded through groove (305).

3. The disassembly tooling for the impeller of a braking resistor fan according to claim 1, wherein: On the inner side of the upper end of the puller base (301) is provided with a threaded ring (306).

4. A disassembly tool for a braking resistor fan impeller according to claim 1, characterized in that: On the outer surface of the lower end of the hydraulic puller (1) is provided with a first thread (4) that matches the threaded ring (306).

5. The disassembly tooling for the impeller of a braking resistor fan according to claim 1, wherein: At the position inside the resistor blower impeller (2) opposite to the two impeller connecting bolts (304), a screw hole that matches the impeller connecting bolts (304) is opened.

6. The disassembly tooling for the impeller of a braking resistor fan according to claim 1, wherein: At the upper end of the hydraulic puller (1) is provided with a hand pressure rod.

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