CN217516538U - Automatic hydraulic rail clamping device for hydropower station door machine - Google Patents
Automatic hydraulic rail clamping device for hydropower station door machine Download PDFInfo
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- CN217516538U CN217516538U CN202220192867.1U CN202220192867U CN217516538U CN 217516538 U CN217516538 U CN 217516538U CN 202220192867 U CN202220192867 U CN 202220192867U CN 217516538 U CN217516538 U CN 217516538U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model provides an automatic hydraulic pressure of power station door machine presss from both sides rail ware, including two big arms of rail ware, two pairs of connecting rods, hydraulic rod, spring and clamp seat, hydraulic rod's both ends respectively with two big arm upper ends of rail ware are articulated, two pairs of connecting rods upper end articulates respectively two big arm upper portions of rail ware press from both sides, the lower extreme of two pairs of connecting rods is articulated, the lower extreme of two pairs of connecting rods with the spring upper end is connected, the lower extreme of spring with the clamp seat is connected, the clamp seat supports on the track, two big arm lower parts of rail ware articulate respectively on the installation face of clamp seat both sides, two big arm lower end parts of rail ware do not fix to set up and are used for pressing from both sides tightly orbital iron of keeping silent. The utility model provides a pair of automatic hydraulic pressure of power station door machine presss from both sides rail ware, work efficiency is high, security and reliability are higher.
Description
Technical Field
The utility model relates to a power station door machine equipment technical field, in particular to power station door machine automatic hydraulic pressure rail clamping device.
Background
The hydropower station is provided with gantry cranes at the dam crest and the tail water platform and used for the operation of lifting and falling a gantry, and the gantry crane cart and the gantry crane are provided with rail clamping devices generally; when the gantry crane is electrified for use, the rail clamping device is loosened, so that the gantry crane freely walks on the rail. The tradition presss from both sides the rail ware for mechanical type presss from both sides the rail ware, needs the staff manual to open and lock before and after the operation of door machine at every turn and presss from both sides the rail ware, and work efficiency is low, and security and reliability are relatively poor, consequently, need a high, the higher automatic hydraulic pressure of power station door machine of work efficiency, security and reliability to press from both sides the rail ware at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an automatic hydraulic pressure of power station door machine that work efficiency is high, security and reliability are higher presss from both sides rail ware is provided.
For solving the technical problem, the utility model provides an automatic hydraulic pressure of power station door machine presss from both sides rail ware, including two big arms of rail ware, two pairs of connecting rods, hydraulic rod, spring and clamp seat, hydraulic rod's both ends respectively with two big arm upper ends of rail ware are articulated, two pairs of connecting rods upper end articulates respectively two big arm upper portions of rail ware, the lower extreme of two pairs of connecting rods is articulated, the lower extreme of two pairs of connecting rods with the spring upper end is connected, the lower extreme of spring with clamp seat connects, clamp seat support is on the track, two big arm lower parts of rail ware articulate respectively on the installation face of clamp seat both sides, two big arm lower end of rail ware end parts are fixed respectively to be set up and are used for pressing from both sides tightly orbital keeping silent iron.
Furthermore, the lower ends of the two pairs of connecting rods are provided with connecting holes, and spring limiting rods are arranged in the connecting holes to hinge the lower ends of the two pairs of connecting rods together.
Furthermore, a positioning rod is arranged in the spring, a mounting hole is formed in the upper end of the positioning rod, the upper end of the positioning rod is connected to the spring limiting rod through the mounting hole, and the lower end of the positioning rod is arranged on the rail clamping seat.
Further, the top of the spring is provided with a spring gland, the spring gland is provided with a through hole, the bottom of the spring is provided with a lower spring end cover, the lower spring end cover is fixedly arranged on the rail clamping seat, the lower spring end cover is provided with a light hole, and the positioning rod penetrates through the through hole of the spring gland and is connected with the spring in a sliding manner in the light hole of the lower spring end cover.
Furthermore, the end part of the lower end of the positioning rod is provided with an external thread, and the end part of the lower end of the positioning rod at the lower part of the unthreaded hole of the lower end cover of the spring is in threaded connection with a limit nut.
Furthermore, the upper ends of the connecting rods of each pair are respectively hinged to the upper parts of the large arms of the two rail clamping devices through first movable cylindrical pins, and the lower parts of the large arms of the two rail clamping devices are respectively hinged to the mounting surfaces on the two sides of the clamp seat through second movable cylindrical pins.
Furthermore, the bottom of the clamp seat is provided with a guide wheel, and the guide wheel is arranged on the rail and can roll on the rail.
Furthermore, the hydraulic push rod is connected with a hydraulic station through a hydraulic oil pipe, and the hydraulic station is connected with an electric control system.
Furthermore, a jaw iron opening stroke detection limiting device is arranged between hydraulic oil cylinders of the hydraulic push rods and is connected with the electric control system.
Furthermore, the upper parts of the two rail clamping device large arms are also provided with manual adjusting screw rods, two ends of each manual adjusting screw rod are respectively in threaded connection with the upper parts of the two rail clamping device large arms, and adjusting nuts are arranged at the positions, outside the two rail clamping device large arms, of two ends of each manual adjusting screw rod.
The utility model provides a pair of automatic hydraulic pressure of power station door machine presss from both sides rail ware is by two big arms that press from both sides rail ware, two pairs of connecting rods, hydraulic rod, parts such as spring and clamp seat constitute, and when starting hydraulic rod, the hydraulic rod shrink can make two big arms that press from both sides rail ware remove in opposite directions to make the iron of keeping silent of centre gripping on the track open, the door machine can remove on the track. When the gantry crane is not used, the hydraulic push rod is closed, the spring makes the connecting rod move upwards by the tension of the spring, so that the large arms of the two rail clamping devices move backwards, and the jaw iron can be clamped on the rail. And the start and stop of the hydraulic push rod can be directly operated by a button arranged on the cab console. The utility model provides an automatic hydraulic pressure of power station door machine presss from both sides rail ware, not only simple structure, have higher economic benefits, easy operation, degree of automation are high moreover, can improve equipment's work efficiency greatly, simultaneously, the security that can also improve equipment controls greatly has good application prospect and spreading value.
Drawings
Fig. 1 is the utility model provides a power station door machine automatic hydraulic pressure rail clamping device's that embodiment provided structural schematic.
Detailed Description
Referring to fig. 1, the embodiment of the utility model provides a pair of automatic hydraulic pressure rail clamping device of power station door machine, including two big arms 1 of rail clamping device, two pairs of connecting rods 2, hydraulic push rod 3, spring 4 and clamp seat 5. The two ends of the hydraulic push rod 3 are hinged to the upper ends of the two rail clamping device large arms 1 respectively, the lower portions of the two rail clamping device large arms 1 are hinged to mounting surfaces 8 on two sides of the clamp base 5 respectively, and jaw irons 7 used for clamping rails 6 are fixedly arranged at the lower end portions of the two rail clamping device large arms 1 respectively.
As a specific embodiment of the present invention, each rail clamping device arm 1 is composed of two parallel narrow cast iron plates, and the two cast iron plates are welded together by a plurality of rib plates. The upper ends of two cast iron plates of each rail clamping device large arm 1 are connected with a pin shaft 14, two ends of a hydraulic push rod 3 are respectively provided with a connecting hole, and two ends of the hydraulic push rod 3 are respectively connected to the pin shafts 14 at the upper ends of the two rail clamping device large arms 1 through the connecting holes. Two parallel mounting surfaces 8 which are perpendicular to the clamp base 5 are fixedly connected to the clamp base 5, the distance between the two mounting surfaces 8 is matched with the distance between the two cast iron plates of each rail clamping device large arm 1, second movable cylindrical pins 20 connected between the two mounting surfaces 8 are respectively arranged on two sides of the two mounting surfaces 8, connecting holes are formed in the lower portions of the two cast iron plates of each rail clamping device large arm 1, the lower portion of each rail clamping device large arm 1 is connected to the second movable cylindrical pin 20 between the two mounting surfaces 8 through the connecting holes in the cast iron plates, and the two rail clamping device large arms 1 can rotate by taking the second movable cylindrical pins 20 as rotating shafts.
The hydraulic push rod 3 is connected with a hydraulic station 17 through a hydraulic oil pipe 16, and the hydraulic station 17 is connected with an electric control system 18.
When the electric control system 18 controls the hydraulic station 17 to output hydraulic oil, the pressure oil enters the hydraulic oil cylinder of the hydraulic push rod 3 to push the piston to enable the hydraulic push rod 3 to contract, the hydraulic push rod 3 drives the two rail clamping device large arms 1 to rotate in opposite directions by taking the second movable cylindrical pin 20 as a shaft, and the jaw iron 7 at the lower end part of the two rail clamping device large arms 1 rotates in a reverse direction by taking the second movable cylindrical pin 20 as a shaft, so that the jaw iron 7 is opened and loosened from the rail 6.
The two pairs of connecting rods 2 are arranged between the upper parts of the two rail clamping device large arms 1, wherein the upper ends of the two pairs of connecting rods 2 are respectively hinged to the upper parts of the two rail clamping device large arms 1, the lower ends of the two pairs of connecting rods 2 are hinged together, the lower ends of the two pairs of connecting rods 2 are connected with the upper ends of springs 4, and the lower ends of the springs 4 are connected with the clamp seats 5.
As a concrete implementation mode of the utility model, every connecting rod upper end of two pairs of connecting rods 2 sets up the mounting hole, and the position that is located round pin axle 14 below on the upper portion of every big arm of rail clamping device 1 is provided with the first activity cylindric lock 15 of connection between two cast iron plates of big arm 1 of rail clamping device, and two pairs of connecting rods 2 are connected respectively on two big arms of rail clamping device 1 through its mounting hole. The lower end of each connecting rod of the two pairs of connecting rods 2 is provided with a connecting hole, and a spring limiting rod 9 is arranged in the connecting holes of the two pairs of connecting rods 2, so that the lower ends of the two pairs of connecting rods 2 are hinged together. Two pairs of connecting rods 2 are respectively arranged on two sides of the spring limiting rod 9 in a V-shaped arrangement. When the two rail clamping device large arms 1 rotate oppositely under the contraction action of the hydraulic push rod 3, the two rail clamping device large arms 1 can drive the upper ends of the two pairs of connecting rods 2 to move oppositely, so that the lower ends of the two pairs of connecting rods 2 move downwards.
As a specific embodiment of the present invention, in order to realize the guiding function of the spring 4, a positioning rod 10 is provided in the spring 4. Wherein, the upper end of locating lever 10 sets up the mounting hole, and locating lever 10 passes through the mounting hole is connected on spring gag lever post 9. In order to increase the limiting area of the spring 4, a spring gland 11 is arranged at the top of the spring 4, a spring lower end cover 12 is arranged at the bottom of the spring 4, and the spring lower end cover 12 is fixedly connected to the clamping rail seat 5. Wherein, be provided with the through-hole on the spring gland 11, be provided with the unthreaded hole on the spring lower end cover 12, locating lever 10 passes through-hole and spring 4 on the spring gland 11, then the lower extreme slidable of locating lever 10 connects in the unthreaded hole on the spring lower end cover 12.
When the two rail clamping device large arms 1 rotate oppositely under the contraction action of the hydraulic push rod 3, the two rail clamping device large arms 1 drive the upper ends of the two pairs of connecting rods 2 to move oppositely, the lower ends of the two pairs of connecting rods 2 move downwards, the positioning rod 10 correspondingly moves downwards, the lower end of the positioning rod 10 can slide downwards in the unthreaded hole in the spring lower end cover 12, and the spring 4 between the spring gland 11 and the spring lower end cover 12 is compressed under the action of downward pressure. When the oil pressure of the oil cylinder of the hydraulic push rod 3 is automatically unloaded, the spring 4 loses downward pressure applied above the spring 4, the spring 4 moves upwards and resets by means of the tension of the spring 4, the spring 4 can push the lower ends of the two pairs of connecting rods 2 to move upwards in the upward movement process, the upper ends of the two pairs of connecting rods 2 move back to back, so that the two rail clamping device large arms 1 are further pushed to rotate back to back by taking the second movable cylindrical pin 20 as a shaft, the jaw irons 7 at the lower end parts of the two rail clamping device large arms 1 rotate oppositely by taking the second movable cylindrical pin 20 as a shaft, and the jaw irons 7 are closed and clamped on the rail 6.
As a specific embodiment of the utility model, in order to prevent that spring upward movement in-process locating lever 10 from the downthehole roll-off of unthreaded hole on spring bottom end cover 12, set up the external screw thread at the lower extreme tip of locating lever 10, the lower extreme tip spiro union stop nut 13 of locating lever 10 to with the unthreaded hole lower part of the spacing spring bottom end cover 12 of lower extreme tip of locating lever 10.
Wherein the clamp base 5 is supported on the rail 6, and when the jaw iron 7 is opened and released from the rail 6, the clamp base 5 can move along the rail 6 on the rail 6. As a specific embodiment of the utility model, for the convenience of clamp seat 5 moves on track 6, clamp seat 5's bottom sets up the leading wheel, and the leading wheel is 2 usually, and 2 leading wheel fixed mounting are bearing clamp seat 5 and going up the weight of each part at both ends around 5 bottoms to 2 leading wheel settings are at track 6, can roll on track 6, can reduce the frictional force when clamp seat 5 moves on track 6 greatly.
As a specific embodiment of the present invention, a jaw iron opening stroke detection limiting device (not shown in fig. 1) is provided between the hydraulic rams of the hydraulic push rod 3, and the detection limiting device is connected to the electrical control system 18. When the hydraulic oil of the hydraulic push rod 3 is unloaded, the piston in the hydraulic oil cylinder moves to the limit position and touches the limit switch, the electric control system 18 immediately starts the hydraulic station 17, and the hydraulic station 17 inputs a certain amount of hydraulic oil into the hydraulic oil cylinder of the hydraulic push rod 3, so that enough pressure is kept in the hydraulic oil cylinder of the hydraulic push rod 3, the jaw iron 7 is ensured to be always in the open state, and the safety of the gantry crane in the walking process is ensured.
As a specific embodiment of the utility model, the upper portion of two big arms of clamping rail ware 1 still sets up manual adjusting screw 19, and the both ends of manual adjusting screw 19 are connected in the connecting hole on two big arms of clamping rail ware upper portions slidable respectively, and manual adjusting screw 19's both ends tip threaded connection adjusting nut, and adjusting nut is located the outside at two big arms of clamping rail ware 1. When the hydraulic station 17 can not normally provide hydraulic operation, the adjusting nuts at the two end parts of the manual adjusting screw rod 19 can be moved in opposite directions, under the squeezing action of the adjusting nuts, the upper ends of the two rail clamping device large arms 1 can rotate in opposite directions by taking the second movable cylindrical pin 20 as an axis, and the jaw irons 7 at the lower end parts of the two rail clamping device large arms 1 rotate in a back-to-back direction by taking the second movable cylindrical pin 20 as an axis, so that the jaw irons 7 are opened and loosened from the track 6.
The utility model provides a pair of automatic hydraulic pressure of power station door machine presss from both sides rail ware, before the door machine begins the walking, start hydraulic pressure station 17 through electrical control system 18, hydraulic pump at hydraulic pressure station 17 begins work, hydraulic pump output's pressure oil gets into hydraulic push rod 3's hydraulic cylinder and promotes the piston and make hydraulic push rod 3 shrink, it uses second activity cylindric lock 20 to make two big arms of clamp rail ware 1 upper ends rotate in opposite directions as the axle to drive two big arms of clamp rail ware 1 during the shrink of hydraulic push rod 3, two big arms of clamp rail ware 1 drive the upper end of two pairs of connecting rods 2 and remove in opposite directions, the lower extreme downwardly moving of two pairs of connecting rods 2, locating lever 10 correspondingly moves downwards, the lower extreme of locating lever 10 can be in the downthehole lapse of light on spring bottom end cover 12, spring 4 between spring gland 11 and the spring bottom end cover 12 receives decurrent pressure and is compressed. And the jaw irons 7 at the lower end parts of the large arms 1 of the two rail clamping devices rotate back to back by taking the second movable cylindrical pins 20 as shafts, so that the jaw irons 7 are opened and loosened from the rail 6, and the gantry crane can walk on the rail 6. Meanwhile, once the hydraulic oil cylinder of the hydraulic push rod 3 is in accident to cause oil pressure unloading, a piston in the hydraulic oil cylinder can touch a limit switch when moving to a limit position, the electrical control system 18 can immediately restart the hydraulic station 17, and the hydraulic station 17 can input a certain amount of hydraulic oil into the hydraulic oil cylinder of the hydraulic push rod 3, so that sufficient pressure is kept in the hydraulic oil cylinder of the hydraulic push rod 3, the jaw iron 7 is ensured to be always in an open state, and the safety of the gantry crane in the walking process is ensured.
When the gantry crane needs to stop working, the traveling power supply of the gantry crane is cut off through the electric control system 18, meanwhile, the interlocking circuit also cuts off the power supply of a hydraulic pump of the hydraulic station 17, at the moment, the oil pressure of a hydraulic oil cylinder of the hydraulic push rod 3 is automatically unloaded, the spring 4 loses downward pressure applied above the spring, the spring 4 moves upwards and resets by the tension of the spring, the spring 4 can push the lower ends of the two pairs of connecting rods 2 to move upwards in the upward movement process, the upper ends of the two pairs of connecting rods 2 can move back to back, so that the two rail clamping device large arms 1 are further pushed to rotate back to back by taking the second movable cylindrical pin 20 as a shaft, the jaw irons 7 at the lower end parts of the two rail clamping device large arms 1 rotate oppositely by taking the second movable cylindrical pin 20 as a shaft, the jaws irons 7 are closed and clamped on the rail 6, and the gantry crane can be dragged to ensure that the gantry crane is not scraped by strong wind.
When the hydraulic station 17 can not normally provide hydraulic operation, adjusting nuts at one end or two ends of a manual adjusting screw 19 can be manually screwed, under the extrusion action of the adjusting nuts, the upper ends of the two rail clamping device large arms 1 can rotate oppositely by taking the second movable cylindrical pin 20 as an axis, the two rail clamping device large arms 1 drive the upper ends of the two pairs of connecting rods 2 to move oppositely, and the lower ends of the two pairs of connecting rods 2 move downwards, so that the spring 4 between the spring gland 11 and the spring lower end cover 12 is compressed under the downward pressure. Meanwhile, the jaw irons 7 at the lower end parts of the two large arms 1 of the rail clamping device rotate back to back by taking the second movable cylindrical pin 20 as an axis, so that the jaw irons 7 are opened and loosened from the rail 6.
When the hydraulic station 17 can not normally provide hydraulic operation, adjusting nuts at one end or two ends of the manual adjusting screw rod 19 can be manually unscrewed, the compressed spring 4 moves upwards to reset by the tension of the spring 4, the spring 4 can push the lower ends of the two pairs of connecting rods 2 to move upwards in the upward movement process, and the upper ends of the two pairs of connecting rods 2 can move back to back, so that the two rail clamping device large arms 1 are further pushed to rotate back to back by taking the second movable cylindrical pin 20 as a shaft, the jaw irons 7 at the lower end parts of the two rail clamping device large arms 1 rotate oppositely by taking the second movable cylindrical pin 20 as a shaft, the jaw irons 7 are closed and clamped on the rail 6, and the gantry crane can be dragged to ensure that the gantry crane is not blown away by strong wind.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an automatic hydraulic pressure of power station door machine presss from both sides rail ware, its characterized in that includes two big arms of rail ware, two pairs of connecting rods, hydraulic push rod, spring and clamp seat, hydraulic push rod's both ends respectively with two big arm upper ends of rail ware are articulated, two pairs of connecting rods upper end articulates respectively two big arm upper portions of rail ware, the lower extreme of two pairs of connecting rods is articulated, the lower extreme of two pairs of connecting rods with the spring upper end is connected, the lower extreme of spring with the clamp seat is connected, the clamp seat supports on the track, two big arm lower parts of rail ware articulate respectively on the installation face of clamp seat both sides, two big arm lower end parts of rail ware do not fix to set up and are used for pressing from both sides tight orbital iron of keeping silent.
2. The hydropower station gate machine automatic hydraulic rail clamping device according to claim 1, characterized in that: the lower ends of the two pairs of connecting rods are provided with connecting holes, and spring limiting rods are arranged in the connecting holes to hinge the lower ends of the two pairs of connecting rods together.
3. The hydropower station gate machine automatic hydraulic rail clamping device according to claim 2, characterized in that: the spring is internally provided with a positioning rod, the upper end of the positioning rod is provided with a mounting hole, the upper end of the positioning rod is connected to the spring limiting rod through the mounting hole, and the lower end of the positioning rod is arranged on the clamp seat.
4. The automatic hydraulic rail clamping device of the hydropower station door machine according to claim 3, characterized in that: the clamp is characterized in that a spring gland is arranged at the top of the spring, a through hole is formed in the spring gland, a lower spring end cover is arranged at the bottom of the spring, the lower spring end cover is fixedly arranged on the clamp seat, a light hole is formed in the lower spring end cover, and the positioning rod penetrates through the through hole of the spring gland and is slidably connected with the spring in the light hole of the lower spring end cover.
5. The automatic hydraulic rail clamping device of the hydropower station door machine according to claim 4, characterized in that: the locating lever lower extreme tip sets up the external screw thread, spring lower end cover unthreaded hole lower part locating lever lower extreme tip spiro union stop nut.
6. The automatic hydraulic rail clamping device of the hydropower station door machine according to claim 1, which is characterized in that: the upper ends of the connecting rods of each pair are respectively hinged to the upper parts of the large arms of the two rail clamping devices through first movable cylindrical pins, and the lower parts of the large arms of the two rail clamping devices are respectively hinged to the mounting surfaces on the two sides of the clamp seat through second movable cylindrical pins.
7. The automatic hydraulic rail clamping device of the hydropower station door machine according to claim 1, which is characterized in that: the bottom of the clamp seat is provided with a guide wheel, and the guide wheel is arranged on the track and can roll on the track.
8. The hydropower station gate machine automatic hydraulic rail clamping device according to claim 1, characterized in that: the hydraulic push rod is connected with a hydraulic station through a hydraulic oil pipe, and the hydraulic station is connected with an electric control system.
9. The hydropower station gate automatic hydraulic rail clamping device according to claim 8, characterized in that: and a jaw iron opening stroke detection limiting device is arranged between the hydraulic oil cylinders of the hydraulic push rod and is connected with the electrical control system.
10. The hydropower station gate machine automatic hydraulic rail clamping device according to claim 1, characterized in that: the upper parts of the two large rail clamping device arms are further provided with manual adjusting screw rods, two ends of each manual adjusting screw rod are in threaded connection with the upper parts of the two large rail clamping device arms respectively, and adjusting nuts are arranged at positions outside the two large rail clamping device arms at two ends of each manual adjusting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220192867.1U CN217516538U (en) | 2022-01-24 | 2022-01-24 | Automatic hydraulic rail clamping device for hydropower station door machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220192867.1U CN217516538U (en) | 2022-01-24 | 2022-01-24 | Automatic hydraulic rail clamping device for hydropower station door machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217516538U true CN217516538U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220192867.1U Active CN217516538U (en) | 2022-01-24 | 2022-01-24 | Automatic hydraulic rail clamping device for hydropower station door machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217516538U (en) |
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2022
- 2022-01-24 CN CN202220192867.1U patent/CN217516538U/en active Active
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