Special high-temperature exhaust valve track support trolley

Abstract

The utility model provides a kind of special high-temperature exhaust valve track bracket trolley, including support frame and bottom track trolley, and track wheels are symmetrically possessed below bottom track trolley, shock absorber is equipped in bottom track trolley bottom end midpoint position, shock absorber slides along shock absorbing track in horizontal direction, shock absorber is elastically up and down action along shock absorbing track in height direction;Track wheel is rotatably arranged below bottom track trolley, and the outside end surface of track wheel is elastically connected with bottom track trolley between car spring.The utility model structure design is reasonable, valve installation position can be adjusted in vertical and horizontal direction, shock absorber is used in the operation of trolley and plays the role of shock absorption;Meanwhile, wheel has self-adapting structure, can adapt to the thermal deformation of pipeline, can effectively protect exhaust valve and other key components, and reduce the damage risk caused by pipeline deformation and vibration, improve work efficiency, ensure the stability of test process.

Description

Technical Field

[0001] This utility model relates to the technical field of valve testing equipment, and in particular to a special high-temperature exhaust valve track support trolley. Background Technology

[0002] In testing exhaust valves, a support mechanism is required to ensure precise installation between the valve and the testing equipment piping. Existing valve testing equipment typically includes... Figure 1 As shown, the exhaust valve and the pipeline are installed by using the cooperation of the support trolley and the track.

[0003] However, the existing support trolley and track have many problems in use. For example, during valve testing, the pressure of the medium before the valve is 4MPa, and the rear end of the valve is in a venting state. This pressure difference will cause the medium to surge, resulting in vibration of the entire pipeline and the exhaust valve.

[0004] Under operating conditions of 2000K, the pipeline will undergo thermal deformation, which will cause the exhaust valve and the bottom track support trolley to shift, resulting in a jamming problem between the trolley wheels and the guide rail.

[0005] Meanwhile, the thermal deformation of the pipeline also affects subsequent disassembly and installation. These problems may affect the operating performance of the exhaust valve and increase the risk of damage to the exhaust valve.

[0006] To address these issues, it is necessary to further improve the design of the existing support trolley so that it can support the valve, allow the valve to be precisely positioned and installed on the pipeline, effectively change the needle, and adapt to the thermal deformation of the pipeline, thus ensuring the stability of the test process. Utility Model Content

[0007] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a special high-temperature exhaust valve track support trolley, which can be adjusted in both vertical and horizontal directions and can play a role in shock absorption; at the same time, it has a stable structure, can adapt to the thermal deformation of the pipeline, can effectively protect the exhaust valve and other key components, reduce the risk of damage caused by pipeline deformation and vibration, improve work efficiency, and ensure the stability of the test process.

[0008] The technical solution adopted by this utility model to solve its technical problem is as follows: a special high-temperature exhaust valve track support trolley, used to test the valve on a test bench. Two track grooves are symmetrically opened on the test bench. Track wheels are symmetrically located below the trolley. The track wheels cooperate with the track grooves and drive the upper trolley to run along the test track along the test track. The trolley includes a support frame and a bottom track trolley. The valve is set on the upper surface of the bottom track trolley through the support frame. A shock-absorbing device is provided at the midpoint of the bottom end of the bottom track trolley. A shock-absorbing track is fixed on the test bench along the center line of the two track grooves. The shock-absorbing device is adjustablely connected to the shock-absorbing track. In the horizontal direction, the shock-absorbing device slides along the shock-absorbing track. In the vertical direction, the shock-absorbing device moves up and down elastically along the shock-absorbing track. The track wheels are rotatably located below the bottom track trolley. A wheel spring is elastically connected between the outer end face of the track wheel and the bottom track trolley.

[0009] In the above scheme, the cooperation between the shock-absorbing device and the shock-absorbing track allows the bottom track trolley to absorb vibrations in the vertical direction at the shock-absorbing track position, reducing the risk of damage to the exhaust valve caused by pipeline vibration. As the trolley moves along the track groove, wheel springs create an elastic adjustment space between the track wheels and the bottom track trolley. This allows the track wheels to automatically adjust under the elastic force of the wheel springs to adapt to the direction of the track groove, enabling the track wheels to adaptively follow changes in the pipeline, maintain stable operation, and avoid jamming.

[0010] Furthermore, the damping track has a long groove along the horizontal direction; the damping device includes a damping bracket, a damping spring, and a handwheel. The damping bracket is fixed to the middle of the bottom end of the bottom track trolley. The handwheel is mounted on the damping bracket. One end of the damping spring is connected to the handwheel, and the other end is connected to the damping bracket. The bottom of the handwheel axle has a threaded end that extends out of the damping bracket and slides in cooperation with the long groove of the damping track. A positioning nut is also fitted on the threaded end of the handwheel. The positioning nut is located below the long groove in the height direction.

[0011] Furthermore, the track wheel includes a wheel axle, a mating wheel, a traveling wheel, and a contact wheel. The wheel axle is rotatably mounted on the bottom track trolley, and the mating wheel, traveling wheel, and contact wheel are sleeved on the wheel axle. The mating wheel is rolled in contact with the track groove, and the axial length of the mating wheel is less than the width of the track groove. The traveling wheel is fixed to the outer end face of the mating wheel, and a wheel spring is elastically connected between the outer end face of the traveling wheel and the inner end face of the contact wheel. The outer end face of the contact wheel is in frictional contact with the bottom track trolley.

[0012] Preferably, to further effectively guide the traveling wheel and the abutment wheel, several positioning shafts are arranged in a ring around the center of the traveling wheel on its outer end face. The abutment wheel has shaft holes into which the outer ends of the positioning shafts extend. One end of the wheel spring is connected to the outer end face of the traveling wheel, and the other end is connected to the inner end face of the abutment wheel. The wheel spring surrounds the outer circumference of the wheel axle. When the spring is compressed or rebounds, the outer end of the positioning shaft engages with the shaft hole and undergoes relative displacement. The engagement of the positioning shaft and the shaft hole further connects and guides the abutment part and the traveling wheel, preventing the abutment part and the traveling part from twisting and affecting the normal function of the spring. This effectively transmits and balances the forces between the track groove, the track wheel, and the bottom track trolley, and adapts the spring to the traveling requirements according to compression or recovery.

[0013] Furthermore, the support frame includes an exhaust valve connecting plate, a transition plate, and a support column. The lower end of the support column is fixedly connected to the bottom railcar via long bolts and several washers. The upper end of the support column is connected to the exhaust valve connecting plate via the transition plate, and the valve is installed on the exhaust valve connecting plate. By adjusting the number of washers as needed, the height of the exhaust valve mounting plate can be adjusted to ensure alignment with the test device pipeline.

[0014] Furthermore, the transition plate has elongated oval bolt holes, and the exhaust valve connecting plate is adjustablely mounted on the transition plate by means of bolts engaging with the elongated oval bolt holes. The elongated oval bolt holes allow adjustment of the horizontal position of the exhaust valve mounting plate to ensure alignment with the test apparatus piping.

[0015] The beneficial effect of this utility model is that the special high-temperature exhaust valve track support trolley provided by this utility model has a reasonable and effective structural design.

[0016] In the connection between the trolley and the track, the vibration damping device is used to reduce the impact of vibration on the exhaust valve during the test and reduce the risk of damage caused by pipeline vibration. At the same time, the damping spring preload of the damping device is adjustable, which provides flexibility and adjustability, can meet different test requirements, and improve the efficiency and safety of the test process.

[0017] In the design of the trolley itself, through the cooperation design of the wheel spring and the rail wheel, when the pipeline undergoes thermal deformation and causes horizontal displacement, the wheel spring can automatically adapt to the position and angle of the rail wheel, so that the wheel can adaptively follow the changes of the pipeline and maintain good contact with the guide rail. This not only prevents jamming between the wheel and the guide rail, but also maintains stable operating performance. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the existing track support trolley after the exhaust valve has been installed.

[0020] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model.

[0021] Figure 3 This is a side view of an embodiment of the present utility model.

[0022] Figure 4 This is an enlarged schematic diagram of the track wheel in an embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the abutting part in an embodiment of this utility model.

[0024] Figure 6 This is a partial schematic diagram of the connection between the transition plate and the exhaust valve connecting plate in an embodiment of this utility model.

[0025] In the diagram: 1. Pipe; 2. Exhaust valve; 3. Track support trolley; 4. Exhaust valve connecting plate; 5. Transition plate; 6. Support column; 7. Bottom track trolley; 8. Gasket; 9. Handwheel; 10. Shock-absorbing spring; 11. Shock-absorbing bracket; 12. Shock-absorbing track; 13. Positioning nut; 14. Track groove; 15. Matching wheel; 16. Wheel axle; 17. Traveling wheel; 18. Positioning wheel; 19. Abutment wheel; 20. Wheel spring; 21. Axle hole. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0027] like Figures 2 to 6 The special high-temperature exhaust valve track support trolley shown is the preferred embodiment of this utility model.

[0028] This trolley is used to test valves on a test bench. Typically, the test bench has two symmetrically arranged track grooves 14, and track wheels are located at the four corners of the trolley. The track wheels engage with the track grooves 14 and drive the upper trolley along the test track 14. The trolley includes a support frame and a bottom track trolley 7, with the valve mounted on the upper surface of the bottom track trolley 7 via the support frame.

[0029] like Figure 2 and Figure 3 As shown, a shock-absorbing device is installed at the midpoint of the bottom end of the bottom track trolley 7. A shock-absorbing track 12 is fixed on the test platform along the centerline of the two track grooves 14. The shock-absorbing track 12 is preferably a T-shaped track, and a long groove is cut in the horizontal direction. The shock-absorbing device includes a shock-absorbing bracket 11, a shock-absorbing spring 10, and a handwheel 9. The shock-absorbing bracket 11 is fixed at the midpoint of the bottom end of the bottom track trolley 7. The track wheels of the bottom track trolley 7 are symmetrically distributed on both sides of the shock-absorbing track 12 and cooperate with the track grooves 14.

[0030] From top to bottom, this embodiment utilizes the connection structure between the exhaust valve and the track support trolley, the shock-absorbing structure of the main body of the track trolley during operation, and the adaptive cooperation structure between the rollers and the track groove 14 to ultimately form a track support trolley that meets the test requirements.

[0031] 1. Connection structure between the exhaust valve and the track support trolley

[0032] In this embodiment, the exhaust valve can be easily adjusted in both height and horizontal position by using a support frame.

[0033] Specifically, such as Figure 2 and Figure 6 As shown, the support frame includes an exhaust valve connecting plate 4, a transition plate 5, and support columns 6. The bottom railcar is connected to the lower end of the support columns 6 using long bolts, and gaskets 8 are installed between the four support columns 6 and the bottom railcar. By increasing or decreasing the number of gaskets 8, the height of the exhaust valve mounting plate can be adjusted to ensure alignment with the test apparatus piping.

[0034] The upper end of the support column 6 is connected to the exhaust valve connecting plate 4 via a transition plate 5, and the valve is installed on the exhaust valve connecting plate 4. The transition plate 5 has elongated oval bolt holes, and the exhaust valve connecting plate 4 is adjustablely mounted on the transition plate 5 by the engagement of bolts with these holes. The elongated oval bolt holes allow adjustment of the horizontal position of the exhaust valve mounting plate to ensure alignment with the test apparatus piping.

[0035] When the exhaust valve is installed at the rear of the trolley and connected to the test device pipeline, if the valve flange and the pipeline flange cannot be aligned, the height of the exhaust valve can be adjusted by increasing or decreasing the number of gaskets 8. Simultaneously, loosen the bolts at the transition plate 5, align the exhaust valve with the pipeline, and then tighten the bolts. This structure makes adjusting the exhaust valve connection more convenient and simpler, greatly improving installation efficiency.

[0036] 2. Vibration damping structure of the main body of the track trolley during operation

[0037] like Figure 2 and Figure 3As shown, the handwheel 9 is mounted on the shock-absorbing bracket 11. The handwheel 9 has a handwheel 9 shaft, one end of the shock-absorbing spring 10 is connected to the handwheel 9 and the other end is connected to the shock-absorbing bracket 11. The bottom of the handwheel 9 shaft has a threaded end that extends out of the shock-absorbing bracket 11 and slides in cooperation with the long groove of the shock-absorbing track 12. The threaded end of the handwheel 9 is also fitted with a positioning nut 13, which is located below the long groove in the height direction.

[0038] After the shock-absorbing device is assembled and installed, it is tunably connected to the shock-absorbing track 12. In the horizontal direction, the shock-absorbing device slides along the shock-absorbing track 12 to ensure that the trolley runs normally without jamming. In the vertical direction, the shock-absorbing device moves up and down elastically along the shock-absorbing track 12, which can effectively provide shock absorption for the bottom track trolley 7.

[0039] Before the test, move the bottom track trolley 7 to the operating position and connect the vibration damping device to the T-shaped guide rail. During installation, first rotate the handwheel 9 clockwise to ensure a tight connection between the trolley and the vibration damping rail 12. During the test, when the track support trolley vibrates up and down, the vibration damping spring 10 provides shock absorption. Adjust the preload of the vibration damping spring 10 by rotating the handwheel 9 to achieve better shock absorption. This method reduces the risk of damage to the exhaust valve caused by pipe vibration. After the test, rotate the handwheel 9 counterclockwise to separate the vibration damping device from the vibration damping rail 12, allowing the trolley to easily detach from the test bench.

[0040] The vibration-damping structure design and usage of the main body of the track trolley provide a more professional and reliable solution to reduce the impact of vibration on the exhaust valve during testing and lower the risk of damage caused by pipeline vibration. It is flexible and adjustable, capable of meeting different testing needs and improving the efficiency and safety of the testing process.

[0041] 3. Adaptive fit structure between roller and track groove 14

[0042] like Figure 4 and Figure 5As shown, the track wheel is rotatably mounted below the bottom track trolley 7. The track wheel includes a wheel axle 16, a mating wheel 15, a traveling wheel 17, and an abutting wheel 19. The wheel axle 16 is rotatably mounted on the bottom track trolley 7, and the mating wheel 15, traveling wheel 17, and abutting wheel 19 are fitted onto the wheel axle 16. The traveling wheel 17 is fixed to the outer end face of the mating wheel 15, and the mating wheel 15 and the traveling wheel 17 can be connected as a single unit. When the mating wheel 15 moves along the track groove 14, the traveling wheel 17 moves in sync with the mating wheel 15. The abutting wheel 19 is located on the outer side of the traveling wheel 17 and is elastically connected to the traveling wheel 17 via a wheel spring 20. In practical design, it is necessary to utilize the wheel spring 20 to maintain an elastically adjustable space between the abutting wheel 19 and the traveling wheel 17, and also to transmit the rotational torque of the traveling wheel 17 to the abutting wheel 19 so that the abutting wheel 19 can maintain synchronous rotation. In this embodiment, the synchronous rotation of the traveling wheel 17 and the abutment wheel 19 is achieved by utilizing the cooperation between the positioning shaft 18 and the shaft hole 21.

[0043] Specifically, four positioning shafts 18 are arranged in a ring around the center of the outer end face of the traveling wheel 17. The abutment wheel 19 has shaft holes 21 for the outer ends of the positioning shafts 18 to extend into. One end of the wheel spring 20 is connected to the outer end face of the traveling wheel 17, and the other end is connected to the inner end face of the abutment wheel 19. The outer end face of the abutment wheel 19 is in frictional engagement with the bottom track trolley 7. The wheel spring 20 surrounds the outer circumference of the wheel axle 16. When the spring is compressed or rebounds, the outer end of the positioning shaft 18 engages with the shaft hole 21 and is displaced relative to it. The engagement of the positioning shaft 18 and the shaft hole 21 further connects and guides the abutment part and the traveling wheel 17, preventing the abutment part and the traveling part from twisting and affecting the normal function of the spring. It can effectively transmit and balance the force between the track groove 14, the track wheel, and the bottom track trolley 7, and the spring can adapt to the travel requirements by compressing or restoring accordingly.

[0044] The mating wheel 15 is rolled into the track groove 14, and the axial length of the mating wheel 15 is less than the width of the track groove 14. The width of the track groove 14 is the adjustment space for the mating wheel 15 relative to the track groove 14 in the width direction. After the wheel spring 20 and the adjustment space are engaged, the wheel has elastic properties and can automatically adapt to the contact force and friction between the wheel and the track according to the actual situation. When the pipeline undergoes thermal deformation causing horizontal displacement, the wheel spring 20 can automatically adapt to the position and angle of the wheel, maintaining good contact with the track groove 14. The wheel spring 20 can absorb the impact force generated by the displacement and provide elastic support, allowing the wheel to adaptively follow the changes in the pipeline. In this way, it can prevent jamming between the wheel and the track and maintain stable operating performance.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A special high-temperature exhaust valve track support trolley, used for testing valves on a test bench, wherein two track grooves (14) are symmetrically provided on the test bench, and track wheels are symmetrically provided below the trolley. The track wheels cooperate with the track grooves (14) and drive the upper trolley to run along the test track along the test track along the test track, characterized in that: The trolley includes a support frame and a bottom track trolley (7), and the valve is mounted on the upper surface of the bottom track trolley (7) via the support frame; The bottom track trolley (7) is equipped with a shock-absorbing device at the midpoint of its bottom end. A shock-absorbing track (12) is fixed on the test platform along the center line of the two track grooves (14). The shock-absorbing device is tunably connected to the shock-absorbing track (12). The shock-absorbing device slides along the shock-absorbing track (12) in the horizontal direction and moves up and down elastically along the shock-absorbing track (12) in the vertical direction. The track wheel is rotatably positioned below the bottom track trolley (7), and a wheel spring (20) is elastically connected between the outer end face of the track wheel and the bottom track trolley (7).

2. The special high-temperature exhaust valve track support trolley as described in claim 1, characterized in that: The shock-absorbing track (12) has a long groove in the horizontal direction; the shock-absorbing device includes a shock-absorbing bracket (11), a shock-absorbing spring (10) and a handwheel (9). The shock-absorbing bracket (11) is fixed at the bottom center of the bottom track trolley (7). The handwheel (9) is set on the shock-absorbing bracket (11). One end of the shock-absorbing spring (10) is connected to the handwheel (9) and the other end is connected to the shock-absorbing bracket (11). The bottom of the axle of the handwheel (9) has a threaded end and the threaded end extends out of the shock-absorbing bracket (11) and slides in cooperation with the long groove of the shock-absorbing track (12). The threaded end of the handwheel (9) is also fitted with a positioning nut (13). The positioning nut (13) is located below the long groove in the height direction.

3. The special high-temperature exhaust valve track support trolley as described in claim 1, characterized in that: The track wheel includes a wheel axle (16), a mating wheel (15), a traveling wheel (17), and a contact wheel (19). The wheel axle (16) is rotatably mounted on the bottom track trolley (7), and the mating wheel (15), the traveling wheel (17), and the contact wheel (19) are sleeved on the wheel axle (16). The mating wheel (15) is configured to roll into the track groove (14), and the axial length of the mating wheel (15) is less than the width of the track groove (14). The traveling wheel (17) is fixed on the outer end face of the mating wheel (15). A wheel spring (20) is elastically connected between the outer end face of the traveling wheel (17) and the inner end face of the abutting wheel (19). The outer end face of the abutting wheel (19) is in frictional engagement with the bottom track trolley (7).

4. The special high-temperature exhaust valve track support trolley as described in claim 3, characterized in that: The outer end face of the traveling wheel (17) is provided with a number of positioning shafts (18) arranged in a ring around the center of the traveling wheel (17). The abutting wheel (19) has a shaft hole (21) for the outer end of the positioning shaft (18) to extend into. One end of the wheel spring (20) is connected to the outer end face of the traveling wheel (17), and the other end is connected to the inner end face of the abutting wheel (19). The wheel spring (20) is surrounded on the outer circumference of the wheel axle (16).

5. The special high-temperature exhaust valve track support trolley as described in claim 1, characterized in that: The support frame includes an exhaust valve connecting plate (4), a transition plate (5), and a support column (6). The lower end of the support column (6) is fixedly connected to the bottom railcar by long bolts and several washers (8). The upper end of the support column (6) is connected to the exhaust valve connecting plate (4) by the transition plate (5). The valve is installed on the exhaust valve connecting plate (4).

6. The special high-temperature exhaust valve track support trolley as described in claim 5, characterized in that: The transition plate (5) has an elongated bolt hole, and the exhaust valve connecting plate (4) can be adjusted and installed on the transition plate (5) by the cooperation of the bolt and the elongated bolt hole.

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