Spline valve rod butterfly valve side jacking machine

Abstract

The utility model discloses a spline valve rod butterfly valve side jacking machine, which relates to the technical field of butterfly valve installation, is arranged at the side part of a butterfly plate press-fitting machine, and comprises a side jacking device which is arranged opposite to a shaft hole of a valve body clamped on the butterfly plate press-fitting machine, and a middle support frame is arranged between the side jacking device and the valve body. The middle supporting frame comprises a frame body and a clamping device arranged on the frame body. The clamping device comprises a plurality of supporting claws and a clamping driving device for driving the multiple supporting claws to clamp or loosen, the spline valve rod is located among the multiple supporting claws, a guide wheel is installed on each supporting claw, the guide wheels are evenly distributed in the circumferential direction of the spline valve rod, and the rolling direction of the guide wheels is in the axial direction of the spline valve rod. The middle supporting frame is arranged between the side jacking device and the valve body, so that clamping and guiding of the spline valve rod are achieved, and bending deformation of the spline valve rod or damage to a shaft hole of the valve body caused by deviation of the spline valve rod due to stress is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valve installation, in particular to a side push machine for a spline valve stem butterfly valve. Background Art

[0002] After the butterfly valve plate is installed, the spline valve stem needs to be installed. The existing installation method is to insert the spline valve stem into the shaft hole of the valve body without loosening the valve body clamp, and then use the side push machine to push the spline valve stem inward to penetrate into the shaft hole of the valve plate. However, because there is no support between the side push machine and the valve body, the spline valve stem is not clamped during the side push process, and only relies on the shaft hole of the valve body for limiting guidance, which is very easy to deviate, thereby causing bending and deformation of the spline valve stem, or damage to the shaft hole of the valve body. Utility Model Content

[0003] The utility model aims to provide a side push machine for a spline valve stem butterfly valve, which realizes the clamping and guiding of the spline valve stem by arranging an intermediate support frame between the side push device and the valve body, thereby avoiding the deviation of the spline valve stem due to force, causing the bending deformation of the spline valve stem, or the damage of the axial hole of the valve body.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a spline valve stem butterfly valve side push machine, which is arranged on the side of a butterfly plate press machine, and includes a side push device arranged opposite to the axial hole of a valve body clamped on the butterfly plate press machine, and an intermediate support frame is arranged between the side push device and the valve body, and the intermediate support frame includes a frame body and a clamping device arranged on the frame body; the clamping device includes a plurality of support claws and a clamping driving device for driving the plurality of support claws to clamp or loosen, the spline valve stem is located between the plurality of support claws, and each support claw is equipped with a guide wheel, and the guide wheels are evenly distributed on the circumference of the spline valve stem and their rolling direction is along the axial direction of the spline valve stem.

[0005] After adopting the above structure, after the butterfly plate is pressed and installed by the butterfly plate press machine, the spline valve stem is first inserted into the axial hole of the valve body without loosening the valve body clamping, and then the spline valve stem is clamped by the clamping device. At this time, multiple guide wheels are in contact with the spline valve stem, so that the spline valve stem can move axially, and then the spline valve stem is pushed by the side push device. Under the guidance of the guide wheels, the spline valve stem can smoothly enter the axial hole of the valve body, thereby realizing the middle support and guidance of the spline valve stem through the intermediate support frame, thereby avoiding the spline valve stem from being offset due to force, causing the spline valve stem to bend and deform, or damage the axial hole of the valve body.

[0006] In order to ensure the stability and reliability of the middle support, three supporting claws are provided, namely, a bottom supporting claw located at the bottom of the spline valve stem, a left supporting claw and a right supporting claw located on both sides of the spline valve stem and symmetrically arranged.

[0007] In order to facilitate adjustment and adapt to spline valve stems of different diameters and realize synchronous clamping of three supporting claws, the clamping device is a centering clamping device, and the three supporting claws are connected to the same clamping drive device through a linkage structure transmission.

[0008] In order to ensure the clamping stability, the linkage structure includes a trapezoidal support body that is slidably installed on the frame body up and down, the side of the trapezoidal support body is an arc-shaped surface, and the bottom support claw is fixed to the top of the trapezoidal support body; the middle part of the left support claw and the right support claw are hinged on the frame body, and rollers are provided at the bottom, and the rollers are against the side of the trapezoidal support body. Guide wheels are installed at one end of the top of the left support claw and the right support claw, and the clamping drive device is fixedly connected to the bottom of the trapezoidal support body. The inscribed circle surrounded by the three guide wheels is controlled by the lifting and lowering of the clamping drive device to be always concentric and concentric with the axial hole of the valve body.

[0009] In order to ensure that each supporting claw exerts moderate pressure on the spline valve stem, an inclined support is respectively arranged between the left supporting claw and the trapezoidal supporting body, and between the right supporting claw and the trapezoidal supporting body. The bottom of the inclined support is hinged on the frame body, and a lower limit shaft is arranged on the side of the trapezoidal support body. An upper limit shaft is arranged on the left supporting claw and the right supporting claw. An arc groove for the sliding of the lower limit shaft and the upper limit shaft is arranged on the inclined support. When the trapezoidal support body slides up and down, the lower limit shaft and the upper limit shaft slide in their corresponding arc grooves.

[0010] In order to ensure smooth sliding, sliding bearings are arranged in the upper limit shaft, the lower limit shaft and the corresponding arc grooves.

[0011] In order to ensure the coaxiality and straightness of the spline valve stem when pushing the spline valve stem, the side push device includes a top plate and a top plate driving device for driving the top plate to move. The top plate is provided with a limiting groove for the end of the spline valve stem to be inserted.

[0012] After adopting the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model discloses a side top machine for a spline valve stem butterfly valve, which solves the technical problem in the prior art that the spline valve stem has no supporting point between the side top device and the valve body, which leads to the spline valve stem being easily offset due to force during the side top process, causing bending and deformation of the spline valve stem, or damage to the axial hole of the valve body. The utility model provides an intermediate support frame between the side top device and the valve body, thereby clamping and guiding the spline valve stem, thereby avoiding the spline valve stem being offset due to force, causing bending and deformation of the spline valve stem, or damage to the axial hole of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a side top machine of a spline valve stem butterfly valve of the utility model;

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle support frame;

[0016] Figure 3 yes Figure 2 Schematic diagram of the internal structure;

[0017] Figure 4 It is a structural schematic diagram of the limit slot.

[0018] In the figure, 1. side top device, 11. top plate, 111. limit groove, 12. top plate driving device, 2. intermediate support frame, 21. frame body, 22. clamping device, 221. support claw, 221a. bottom support claw, 221b. left support claw, 221c. right support claw, 222. clamping driving device, 223. guide wheel, 224. roller, 23. linkage structure, 231. trapezoidal support body, 233. lower limit shaft, 234. upper limit shaft, 24. oblique support, 3. spline valve stem. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] The orientations mentioned in this specification are based on the orientations of the spline valve stem butterfly valve side top machine of the utility model during normal operation, and do not limit the orientations during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.

[0021] Embodiment 1:

[0022] like Figure 1 As shown, a spline valve stem butterfly valve side push machine is arranged on the side of a butterfly plate press machine, and the butterfly plate press machine is used to clamp the valve body and align and press the valve plate into the valve body. The axial hole of the press-fitted valve plate is aligned with the axial hole of the valve body.

[0023] A side push machine for a spline valve stem butterfly valve comprises a side push device 1 arranged opposite to the axial hole of a valve body clamped on a butterfly plate press machine. The side push device 1 is an electric cylinder in this embodiment. In actual applications, a cylinder or an electric push rod may be used, which is not limited in this embodiment. The side push device 1 is used to push the spline valve stem 3 inserted into the axial hole of the valve body into the axial hole of the valve body and the axial hole of the valve plate to achieve the installation of the spline valve stem.

[0024] like Figure 1 and Figure 2As shown together, an intermediate support frame 2 is arranged between the side top device 1 and the valve body (not shown in the figure), and the intermediate support frame 2 includes a frame body 21 and a clamping device 22 arranged on the frame body 21; the clamping device 22 includes a plurality of support claws 221 and a clamping driving device 222 driving the plurality of support claws 221 to clamp or release, and the spline valve stem 3 is located between the plurality of support claws 221, so that the plurality of support claws 221 are controlled to approach each other by the clamping driving device 222, thereby clamping the spline valve stem 3. The structure of the clamping device 22 can adopt the V-block clamping or three-jaw chuck clamping method in the prior art or other methods, as long as the clamping device 22 can clamp the spline valve stem to ensure that it cannot move in the radial direction.

[0025] If V-block clamping is adopted, that is, a support claw 221 is slidably installed on both sides of the frame 21, and a V-block is fixed on each support claw 221. The two support claws 221 are controlled to approach each other by the clamping drive device 222, so that the two V-blocks are docked and the spline valve stem 3 is clamped.

[0026] If a three-jaw chuck clamping method is adopted, that is, a three-jaw chuck is fixed on the frame, the spline valve stem 3 is inserted into the three-jaw chuck, and the three-jaw chuck is controlled by the clamping drive device 222 to clamp the spline valve stem 3. The three-jaw chuck belongs to the prior art and will not be described in detail here.

[0027] Because the present application also needs to realize the axial movement of the spline valve stem 3, no matter which clamping method is used, each support claw 221 is equipped with a guide wheel 223, which is evenly distributed on the circumference of the spline valve stem 3 and whose rolling direction is along the axial direction of the spline valve stem 3. That is, the position of the clamping device 22 that is in contact with the spline valve stem 3 is the contact of the guide wheel 223, thereby realizing the smooth axial movement of the spline valve stem 3.

[0028] For example: when a V-block clamping method is adopted, a guide wheel 223 can be set on each of the two V-shaped sides of the V-block; if a three-jaw chuck clamping method is adopted, a guide wheel 223 can be set on each supporting claw 221 of the three-jaw chuck to contact the spline valve stem 3.

[0029] Embodiment 2:

[0030] Based on the first embodiment, this embodiment adds a structure of a clamping device 22 to ensure that the middle support is stable and reliable.

[0031] like Figure 2 and Figure 3As shown, three supporting claws 221 are provided, namely, a bottom supporting claw 221a located at the bottom of the spline valve stem 3, a left supporting claw 221b and a right supporting claw 221c located at both sides of the spline valve stem 3 and symmetrically provided. Because each supporting claw 221 is in point contact with the spline valve stem 3, by providing three supporting claws 221, the spline valve stem 3 is stably clamped.

[0032] The three supporting claws 221 can be fixed by the bottom supporting claw 221a, while the left supporting claw 221b and the right supporting claw 221c move to clamp the spline valve stem 3. The three supporting claws 221 can also be operated simultaneously to clamp the spline valve stem 3. In order to facilitate adjustment and adapt to spline valve stems 3 of different diameters, the clamping device 22 in this embodiment is a centering clamping device, that is, the three supporting claws 221 operate simultaneously. In order to ensure the synchronization of the operation of the three supporting claws 221, the three supporting claws 221 are connected to the same clamping drive device 222 through the linkage structure 23.

[0033] The linkage structure 23 includes a trapezoidal support body 231 slidably mounted on the frame body 21, the side of the trapezoidal support body 231 is an arcuate surface (the curve of the arcuate surface can be obtained by reverse simulation of the software), the bottom of the bottom support claw 221a is fixed to the top of the trapezoidal support body 231; the middle of the left support claw 221b and the right support claw 221c are hinged on the frame body 21, and the bottom thereof is provided with a roller 224, which abuts against the side of the trapezoidal support body 231, and the left support claw 221b and the right support claw 221c are hinged on the frame body 21. A guide wheel 223 is installed at one end of the top of the support claw 221c, and the output end of the clamping drive device 222 is fixedly connected to the bottom of the trapezoidal support body 231. The clamping drive device 222 controls the trapezoidal support body 231 to slide upward on the frame body 21, thereby controlling the bottom support claw 221a to rise, and at the same time, the left support claw 221b and the right support claw 221c rotate around the hinge point, and then the diameter of the inscribed circle surrounded by the three support claws 221 gradually decreases, thereby clamping the spline valve stem 3, and vice versa, loosening the spline valve stem 3. Through the reasonable setting of the curve of the arc surface, it is ensured that the inscribed circle surrounded by the three guide wheels 223 always remains concentric and is concentric with the axial hole of the valve body.

[0034] In order to ensure that the pressure of each supporting claw 221 on the spline valve stem 3 is moderate, an oblique support 24 is respectively arranged between the left supporting claw 221b and the trapezoidal supporting body 231, and between the right supporting claw 221c and the trapezoidal supporting body 231. The bottom of the oblique support 24 is hinged on the frame 21, and the side of the trapezoidal supporting body 231 is provided with a lower limit shaft 233, and the left supporting claw 221b and the right supporting claw 221c are provided with an upper limit shaft 234. The oblique support 24 is provided with an arc groove for the lower limit shaft 233 and the upper limit shaft 234 to slide. When the trapezoidal supporting body 231 slides up and down, the lower limit shaft 233 and the upper limit shaft 234 slide in their corresponding arc grooves. By providing the oblique support 24, the three supporting claws 221 can be operated synchronously.

[0035] In order to ensure that the upper limit shaft 234 and the lower limit shaft 233 slide smoothly in the arc groove, sliding bearings are arranged in the upper limit shaft 234, the lower limit shaft 233 and their corresponding arc grooves, so that the upper limit shaft 234, the lower limit shaft 233 and their corresponding arc grooves can both slide along the arc groove and rotate, thereby avoiding jamming.

[0036] like Figure 1 and Figure 4 As shown, in order to ensure the coaxiality and straightness of the spline valve stem 3 when pushing the spline valve stem 3, the side push device 1 includes a top plate 11 and a top plate driving device 12 for driving the top plate 11 to move. The top plate 11 is provided with a limit groove 111 for the end of the spline valve stem 3 to be inserted. The limit groove 111 is contoured with the square head of the outer end of the spline valve stem 3, so that it is convenient to insert and form a limit. In order to facilitate insertion and multi-angle adjustment, the limit groove 111 adopts an octagonal star structure, so that it can be convenient to insert and limit at any angle.

[0037] like Figure 1 - Figure 4 As shown in the figure, the working process of a spline stem butterfly valve side top machine is as follows:

[0038] Insert one end of the spline valve stem 3 into the axial hole of the valve body, then clamp the spline valve stem 3 through the intermediate support frame 2, and finally push the spline valve stem 3 through the side push device 1 to insert it into the axial hole of the valve body and the axial hole of the butterfly plate.

[0039] The utility model discloses a side top machine for a spline valve stem butterfly valve, which solves the technical problem in the prior art that the spline valve stem has no supporting point between the side top device and the valve body, which leads to the spline valve stem being easily offset due to force during the side top process, causing bending and deformation of the spline valve stem, or damage to the axial hole of the valve body. The utility model provides an intermediate support frame between the side top device and the valve body, thereby clamping and guiding the spline valve stem, thereby avoiding the spline valve stem being offset due to force, causing bending and deformation of the spline valve stem, or damage to the axial hole of the valve body.

[0040] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A spline valve stem butterfly valve side push machine, arranged on the side of a butterfly plate press machine, characterized in that: It includes a side top device arranged opposite to the axial hole of the valve body clamped on the butterfly plate press machine, an intermediate support frame is arranged between the side top device and the valve body, and the intermediate support frame includes a frame body and a clamping device arranged on the frame body; The clamping device includes a plurality of supporting claws and a clamping driving device for driving the plurality of supporting claws to clamp or loosen. The spline valve stem is located between the plurality of supporting claws. A guide wheel is installed on each of the supporting claws. The guide wheels are evenly distributed on the circumference of the spline valve stem and their rolling direction is along the axial direction of the spline valve stem.

2. A spline valve stem butterfly valve side lift machine according to claim 1, characterized in that: The supporting claws are provided in three numbers, namely a bottom supporting claw located at the bottom of the spline valve stem, a left supporting claw and a right supporting claw located at both sides of the spline valve stem and symmetrically arranged.

3. A spline valve stem butterfly valve side lift machine according to claim 2, characterized in that: The clamping device is a centering clamping device, and the three supporting claws are connected to the same clamping drive device through a linkage structure.

4. A spline valve stem butterfly valve side lift machine according to claim 3, characterized in that: The linkage structure includes a trapezoidal support body that is slidably installed on the frame body up and down, the side surface of the trapezoidal support body is an arc-shaped surface, and the bottom support claw is fixed on the top of the trapezoidal support body; the middle parts of the left support claw and the right support claw are hinged on the frame body, and rollers are provided at the bottom thereof, and the rollers are against the side surfaces of the trapezoidal support body, and the guide wheels are installed at one end of the tops of the left support claw and the right support claw, and the clamping drive device is fixedly connected to the bottom of the trapezoidal support body, and the inscribed circle surrounded by the three guide wheels is always concentric through the lifting and lowering control of the clamping drive device, and is concentric with the axial hole of the valve body.

5. A spline valve stem butterfly valve side lift machine according to claim 4, characterized in that: An oblique support is respectively arranged between the left supporting claw and the trapezoidal supporting body, and between the right supporting claw and the trapezoidal supporting body. The bottom of the oblique support is hinged on the frame body. A lower limit axis is arranged on the side of the trapezoidal supporting body. An upper limit axis is arranged on the left supporting claw and the right supporting claw. An arc groove for sliding of the lower limit axis and the upper limit axis is arranged on the oblique support. When the trapezoidal supporting body slides up and down, the lower limit axis and the upper limit axis slide in their corresponding arc grooves.

6. A spline valve stem butterfly valve side lift machine according to claim 5, characterized in that: Sliding bearings are arranged in the upper limit shaft, the lower limit shaft and the corresponding arc grooves.

7. The spline valve stem butterfly valve side lift machine according to claim 1, characterized in that: The side push device comprises a push plate and a push plate driving device for driving the push plate to move. The push plate is provided with a limiting groove for the end of the spline valve stem to be inserted.

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