CN101628403B - Synchronous tightening tool for expansion sleeve - Google Patents

Abstract

The invention discloses a synchronous tightening tool for an expansion sleeve, which comprises: the device comprises a bracket, an adjusting screw, a connecting rod, a pin shaft, a pulley and a tool disc; the tool disc comprises a first circumference and a second circumference, a plurality of mounting holes are formed in the first circumference of the tool disc, and the mounting holes are matched with the working force arm of the hydraulic wrench; a continuous slideway is arranged on the second circumference of the tooling plate, the pulley is connected with the slideway in a sliding way, and the sliding range of the pulley on the slideway can enable the mounting hole to cover all bolts on the inner ring of the expansion sleeve; the pulley is connected with one end of the connecting rod through a pin shaft, the other end of the connecting rod is connected with one end of the adjusting screw rod through a pin shaft, and the other end of the adjusting screw rod is fixedly connected with the support, so that the tool disc can swing in the axis direction of the main shaft of the gear box. The invention can synchronously screw a plurality of bolts on the inner ring of the expansion sleeve, so that the screwing sequence can not be wrong, thereby improving the qualification rate of assembly.

Description

A synchronous tightening tool for expansion sleeve

technical field

The invention relates to the field of expansion sleeve accessories, more specifically, to a synchronous tightening tool for expansion sleeves.

Background technique

In the process of connecting the main shaft and the gearbox, the expansion sleeve is a key component used to connect the main shaft and the gearbox. The expansion sleeve is divided into two parts, the inner ring and the outer ring. It is set on the outer circle of the planetary carrier of the gearbox. There are 33-M33 bolts evenly distributed on the inner ring circumference. The outer circle of the inner ring of the expansion sleeve is a 4-degree cone. On the surface, as long as the 33-M33 bolts are tightened, the outer ring of the expansion sleeve will squeeze the inner ring, and the inner ring will squeeze the planetary frame of the gearbox, and the planetary frame of the gearbox will clamp the main shaft, and finally achieve the purpose of torque transmission.

For the process of connecting the main shaft and the gearbox of the existing expansion sleeve, it is generally a purely manual operation. Three workers manually operate the hydraulic wrench, each time according to a certain order, and the three parts on the inner ring of the expansion sleeve are separated by 120 degrees. The bolts are tightened synchronously. Another worker is responsible for controlling the tightening force of the hydraulic wrench and the hydraulic pump.

The specific connection steps are:

(1) Install the expansion sleeve on the outer circle of the planetary carrier of the gearbox, and then insert the main shaft into the inner hole of the planetary carrier of the gearbox, and pre-tighten the inner ring circle to be up, down, left and right (A, B, C, D ) four bolts, measure and record the height difference between the inner and outer rings corresponding to the four points, calculate the difference between the measured values, and control it within 0.2mm, and then tighten the rest of the bolts to the state just under force.

(2) Use 2 torque wrenches symmetrically and synchronously pre-tightened, tighten 200Nm each time, and tighten to 600Nm (tighten 3 times in total), measure the values of ABCD four points every time you tighten, and calculate the difference, the difference is required ≤ 0.6mm, if it is out of tolerance, it needs to be corrected before continuing the installation.

(3) Use 3 hydraulic wrenches to tighten symmetrically and synchronously, tighten 100Nm each time, and tighten to 1800Nm (totally tighten 12 times), measure the values of ABCD four points every time you tighten, and calculate the difference, the difference is required to be ≤ 0.6mm, if it is out of tolerance, it needs to be corrected before continuing the installation.

(4) When the tightening torque reaches 1800Nm, it must be checked with a standard wrench. Check the ABCD four-point value is -2～+5mm, and the four-point difference must be controlled within the range of ≤0.6mm in the end.

When the difference is ≤0.6mm, it is the assembly quality requirement, and this monitoring should run through the entire installation process.

However, the existing connection procedure has the following technical disadvantages:

The sequence of tightening all the bolts on the inner ring of the expansion sleeve is not carried out one by one, but cross-tightened according to certain rules. However, due to the heavy workload of the workers, workers often fail to tighten the bolts according to the predetermined order during operation. In the case of tightening, asynchrony is formed, resulting in a low assembly qualification rate.

Therefore, there is an urgent need for an auxiliary device to improve the assembly qualification rate.

Contents of the invention

In view of this, the present invention provides a tool for synchronously tightening the expansion sleeve, so that workers can tighten the bolts on the inner ring of the expansion sleeve synchronously according to a predetermined sequence during operation, thereby improving the assembly qualification rate.

The embodiment of the present invention is realized like this:

A synchronous tightening tool for expansion sleeves, including: a bracket, an adjusting screw, a connecting rod, a first pin shaft, a second pin shaft, a pulley, a tooling plate and a sleeve;

The tooling plate includes a first circumference and a second circumference, and several mounting holes are uniformly arranged on the first circumference of the tooling plate, and the mounting holes are adapted to the working arm of the hydraulic wrench;

A continuous slideway is provided on the second circumference of the tooling plate, and the pulley is slidably connected with the slideway, and the sliding range of the pulley on the slideway can make the installation hole cover the inner ring of the expansion sleeve all bolts on the

The pulley is connected to one end of the connecting rod through the first pin shaft, the other end of the connecting rod is connected to one end of the adjusting screw through the second pin shaft, and the other end of the adjusting screw is connected to the second pin shaft. The bracket is fixedly connected so that the tooling plate can swing in the axis direction of the main shaft of the gearbox;

The driving head of the hydraulic wrench is adapted to the mounting hole of the driving head of the sleeve.

Compared with the prior art, the technical solutions provided by the embodiments of the present invention have the following advantages and characteristics:

The working arm of the hydraulic wrench can be embedded in multiple mounting holes on the tooling plate, that is, the tooling plate fixes the position of the hydraulic wrench, so that the order of the worker’s screwing the bolts will not be wrong; moreover, the rotation angle of the tooling plate itself can make The installation hole covers all the bolts on the inner ring of the expansion sleeve. Therefore, the worker can tighten the bolts on the inner ring of the expansion sleeve synchronously according to a predetermined order by using the synchronous tightening tool of the expansion sleeve provided by the present invention during operation, thereby improving The qualified rate of assembly is improved.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is the front schematic view of the synchronous tightening tool of the expansion sleeve provided by the present invention;

Fig. 2 is a schematic side view of the synchronous tightening tool of the expansion sleeve provided by the present invention;

Fig. 3 is the schematic diagram of the tooling tray provided by the present invention;

Fig. 4 is the front view of the sleeve provided by the present invention;

Fig. 5 is the sectional view of the sleeve provided by the present invention;

Fig. 6 is the front view of the pulley provided by the present invention;

Fig. 7 is the side view of the pulley provided by the present invention;

Fig. 8 is the schematic diagram of pin provided by the present invention;

Figure 9 is a side view of the connecting rod provided by the present invention;

Fig. 10 is the front view of the connecting rod provided by the present invention;

Figure 11 is a side view of the adjusting screw provided by the present invention;

Fig. 12 is the front view of the adjusting screw provided by the present invention;

Fig. 13 is the front view of the bracket provided by the present invention;

Fig. 14 is a side view of the bracket provided by the present invention.

Detailed ways

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 some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The synchronous tightening tool for the expansion sleeve provided in the embodiment of the present invention includes: a bracket, an adjusting screw, a connecting rod, a pin shaft, a pulley and a tooling plate; the tooling plate includes a first circle and a second circle, and the first circle of the tooling plate A number of installation holes are evenly arranged on a circumference, and the installation holes are adapted to the working arm of the hydraulic wrench; a continuous slideway is arranged on the second circumference of the tooling plate, and the pulley and the slideway Sliding connection, the sliding range of the pulley on the slideway can make the installation hole cover all the bolts on the inner ring of the expansion sleeve; the pulley is connected with one end of the connecting rod through the pin shaft, and the The other end of the connecting rod is connected with the adjusting screw through the pin, and the adjusting screw is fixedly connected with the support so that the tooling plate can swing in the direction of the axis of the gearbox main shaft. There are many ways to realize the synchronous tightening tooling of the above-mentioned expansion sleeve, which will be described in detail through specific examples below:

Please refer to Fig. 1 to Fig. 3, a kind of tooling for synchronous tightening of expansion sleeve, including: tooling plate 1, pulley 2, pin shaft 3, bracket 4, connecting rod 5 and adjusting screw 6, tooling plate 1 includes the first circle and the second circle Two circles, three torx-shaped mounting holes 12 are evenly arranged on the first circumference of the tooling plate 1, and the torx-shaped mounting holes 12 are compatible with the torx-shaped working arm of the hydraulic wrench; the second circumference of the tooling plate 1 A continuous slideway 11 is arranged on the top, and the radian of the slideway 11 on the second circumference is 120 degrees. The pulley 2 is slidably connected with the slideway 11. The sliding range of the pulley 2 on the slideway 11 can make the plum blossom tooth-shaped mounting hole 12 Cover all the bolts on the inner ring of the expansion sleeve; the pulley 2 is connected with one end of the connecting rod 5 through the pin shaft 3, the other end of the connecting rod 5 is connected with one end of the adjusting screw 6 through the pin shaft 3, and the other end of the adjusting screw 6 is connected with the The bracket 4 is fixedly connected so that the tooling plate 1 can swing in the axial direction of the main shaft of the gearbox.

Fig. 4 to Fig. 14 are front or side schematic diagrams of various parts of the expansion sleeve tightening tooling.

In the embodiment shown in Figures 1 to 3, the torx-shaped mounting holes 12 of the tooling plate 1 are used to embed the torx-shaped toothed arms of the hydraulic wrench, and the 3 torx-shaped mounting holes 12 correspond to 3 hydraulic wrenches. Therefore, Utilizing the tooling plate 1 to drive 3 hydraulic wrenches to screw the bolts can achieve the purpose of synchronization. The tooling plate 1 is provided with a slideway 11 with an arc of 120 degrees. The slideway 11 cooperates with the pulley 2 to make the tooling plate 1 rotate by itself, so that the hydraulic wrench embedded in the tooling plate 1 can cover all the bolts on the inner ring of the expansion sleeve , in order to achieve the purpose of being able to tighten all bolts. A plurality of lightening holes 13 are also arranged on the tooling tray 1 for reducing its own weight and facilitating the operation and use of the staff. Moreover, the thickness of the tooling tray 1 is very thin, which is convenient for working in a narrow space.

In the embodiment shown in Figures 1 to 3, since one end of the connecting rod 5 is connected to the pulley 2 through the pin shaft 3, the other end of the connecting rod 5 is connected to the adjusting screw 6 through the pin shaft 3, and the adjusting screw 6 is fixed on the bracket 4 , that is, both ends of the connecting rod 5 are movable links, therefore, the connecting rod 5 can drive the tooling plate 1 to swing in the direction of the axis of the gearbox main shaft. When it is necessary to torque the bolts, the tooling plate 1 can be swung so that the three hydraulic wrenches embedded in the tooling plate 1 can be aligned with the bolts at the same time to torque the bolts; 3 Remove the hydraulic wrench from the bolt.

In the embodiment shown in Fig. 1 to Fig. 3, the JU80 hydraulic wrench can be well embedded in the torx-shaped installation hole 12 of the tooling plate 1. After the hydraulic wrench is driven, the reaction torque of the hydraulic wrench acts on the expansion sleeve to tighten synchronously. In the radial direction of the tooling, the tooling will not be subject to bending moment, so the force is good. The driving head of the hydraulic wrench is a square cylinder, and the sleeve 7 needs to be installed to torque the bolt. Therefore, before using the hydraulic wrench to torque the bolt, insert the driving head of the hydraulic wrench into the driving head of the sleeve 7 In the installation hole 72, the toothed sleeve hole 71 of the sleeve 7 is entangled with the bolt head, and then the hydraulic wrench is operated, and the torque can be transmitted to the bolt through the sleeve 7. Traditional sleeves are generally regular hexagonal sleeve holes, but the toothed sleeve hole 71 of the sleeve 7 designed by the present invention is a regular polygon, so no matter which angle the bolt head is at, the sleeve 7 can easily trap the bolt head, and also has the function of anti-jamming when transmitting torque. The sleeve 7 has a small volume and a length of 52mm, so it is convenient to work in a narrow space.

In the embodiments shown in Figures 1 to 3, the method of using the expansion sleeve synchronously tightening tooling is as follows: install the bracket 4 on the lifting lug of the gearbox, and insert the torx tooth-shaped arm of the hydraulic wrench into the torx on the tooling plate 1. In the tooth-shaped mounting hole 12, swing the work plate 1, align the hydraulic wrench with the bolt, and operate the hydraulic wrench to torque; Rotate itself clockwise or counterclockwise, align the hydraulic wrench with the next set of bolts, operate the hydraulic wrench to tighten the torque, and repeat the whole process until the bolt torque reaches the rated torque.

It should be noted that the embodiments shown in Fig. 1 to Fig. 3 are only the preferred embodiments introduced by the present invention, because this kind of design is more conducive to the cooperation of workers, and the effect can be optimized. , more embodiments can be designed, for example, the installation holes are not limited to 3, and the slideway is not limited to 120 degrees, as long as the range of the slideway can make the installation holes cover all the bolts on the inner ring of the expansion sleeve That is, therefore, the tooling plate of the present invention can be designed as follows: 2 mounting holes are evenly arranged on the first circumference of the tooling plate, and the radian of the slideway on the second circumference is designed to be 180 degrees. It can also be designed as follows: 4 installation holes are evenly arranged on the first circumference of the tooling plate, and the radian of the slideway on the second circumference is designed to be 90 degrees. As long as the design of the present invention satisfies the scope of the slideway so that the mounting holes can cover all the bolts on the inner ring of the expansion sleeve. Moreover, the model of the hydraulic wrench is not limited to JU80, and the shape of the mounting hole varies with the shape of the working arm of the hydraulic wrench, as long as the working arm of the hydraulic wrench matches the mounting hole. Therefore, the present invention is not limited to the provided embodiments, and various modifications to these embodiments are obvious to those skilled in the art, and all belong to the scope of protection of the present invention. Due to limited space, they are not repeated here. .

To sum up, the synchronous tightening tooling of the expansion sleeve provided by the present invention can make the force arm of the hydraulic wrench embedded in a plurality of mounting holes on the tooling plate, that is, the tooling plate fixes the position of the hydraulic wrench so that the worker can twist The order of the bolts will not be wrong; moreover, the rotation angle of the tooling plate itself can make the installation hole cover all the bolts on the inner ring of the expansion sleeve, so the worker can use the expansion sleeve provided by the present invention to tighten the tooling synchronously during operation. The predetermined sequence tightens the bolts on the inner ring of the expansion sleeve synchronously, thereby improving the qualified rate of assembly. In addition, the tooling plate supports the hydraulic wrench, and workers no longer need to hold the hand to operate, but only need to swing and turn the tooling plate, thus reducing labor intensity and improving the efficiency of the assembly process; the working arm of the hydraulic wrench is embedded in the tooling In the mounting hole of the disc, after the hydraulic wrench is driven, the reaction torque of the wrench acts on the radial direction of the tooling, so the working arm will not act on the equipment and tools, which not only protects the equipment and tools, but also eliminates potential safety hazards.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. a synchronous tightening tool of expanded coupling sleeve is characterized in that, comprising: support, adjusting screw(rod), connecting rod, first bearing pin, second bearing pin, pulley, tool disk and sleeve;

Said tool disk comprises first circumference and second circumference, evenly is provided with several installing holes on first circumference of said tool disk, said installing hole and hydraulic spanner to make the arm of force suitable;

Second circumference of said tool disk is provided with continuous slideway, and said pulley and said slideway are slidingly connected, and said pulley can make said installing hole cover all bolts on the swelling cover inner ring at the sliding scale on the said slideway;

Said pulley is connected through said first bearing pin with an end of said connecting rod; The other end of said connecting rod is connected through said second bearing pin with an end of said adjusting screw(rod); The other end of said adjusting screw(rod) is fixedly connected with said support, so that said tool disk can be swung on gear-box main-shaft axis direction;

The driving head installing hole of the driving head of said hydraulic spanner and said sleeve is suitable.

2. synchronous tightening tool of expanded coupling sleeve according to claim 1 is characterized in that said tool disk is provided with lightening hole.

3. synchronous tightening tool of expanded coupling sleeve according to claim 1 is characterized in that said support is installed on the hanger of gear-box.

4. synchronous tightening tool of expanded coupling sleeve according to claim 1 is characterized in that, said hydraulic spanner is a JU80 type hydraulic spanner.

5. synchronous tightening tool of expanded coupling sleeve according to claim 4 is characterized in that, said installing hole is a plum blossom profile of tooth installing hole.

6. synchronous tightening tool of expanded coupling sleeve according to claim 1 is characterized in that, evenly is provided with 3 installing holes on first circumference of said tool disk, and the radian of said slideway on second circumference is 120 degree.

7. synchronous tightening tool of expanded coupling sleeve according to claim 1 is characterized in that, evenly is provided with 2 installing holes on first circumference of said tool disk, and the radian of said slideway on second circumference is 180 degree.

8. synchronous tightening tool of expanded coupling sleeve according to claim 1 is characterized in that, evenly is provided with 4 installing holes on first circumference of said tool disk, and the radian of said slideway on second circumference is 90 degree.

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