Follow-up mechanism for locking beam and protective fence of hydropower station and operation method

Abstract

The invention discloses a follow-up mechanism of a hydropower station locking beam and a protection fence and an operation method. The follow-up mechanism comprises a transmission system and a fence system. The transmission system comprises a power receiving device, a transmission mechanism and a transmission connecting piece, the power receiving device is in transmission fit with the transmission mechanism, and the transmission mechanism is in transmission fit with the transmission connecting piece; a plurality of transmission connecting pieces are mounted on the transmission mechanism; the fence system comprises a traction rope and a guide lifting component; the traction rope is matched with the guide lifting component to achieve building and retreating of the fence system; and the transmission connecting piece is connected with the guide lifting component. Through cooperative linkage of the transmission system and the fence system, synchronous and accurate lifting of the locking beam and the protection fence is achieved, the operation efficiency, safety and reliability of orifice protection of the hydropower station are remarkably improved, and the risks of manual intervention and misoperation are reduced.

Description

Technical Field

[0001] The invention belongs to the field of safety protection devices for gate openings of hydropower stations, and in particular relates to a follow-up mechanism and an operating method for a locking beam and a protective fence of a hydropower station. Background Art

[0002] In water conservancy projects such as hydropower stations, the hole locking beam is used for safety locking during equipment maintenance, while the protective fence is used to isolate the dangerous area to prevent people from entering by mistake. In traditional technology, the operation of locking beam and the construction / exit of the fence system are usually completed manually and independently, which has the following significant problems: Low operating efficiency: The movement of the locking beam and the lifting of the fence need to be operated step by step, relying on manpower or simple mechanical drive, which is time-consuming and labor-intensive, and it is difficult to meet the rapid response requirements under emergency conditions.

[0003] Poor safety coordination: The fence system and the locking beam are not in sync, which cannot meet the safety hazard of the fence not being able to be erected in time when an open surface appears at the hole during the withdrawal of the locking beam. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a follow-up mechanism and an operating method for the locking beam and the protective fence of a hydropower station. Through the coordinated linkage of the transmission system and the fence system, the synchronous and precise lifting and lowering of the locking beam and the protective fence can be achieved, which significantly improves the efficiency, safety and reliability of the orifice protection operation of the hydropower station and reduces the risk of manual intervention and misoperation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: The following mechanism of the locking beam and the protective fence of the hydropower station includes a transmission system and a fence system; the transmission system includes a power receiving device, a transmission mechanism and a transmission connecting piece, the power receiving device and the transmission mechanism are in transmission cooperation, and the transmission mechanism and the transmission connecting piece are in transmission cooperation; a plurality of transmission connecting pieces are installed on the transmission mechanism, The fence system includes a traction rope and a guide lifting component; the traction rope and the guide lifting component cooperate to realize the construction and withdrawal of the fence system; The transmission connecting piece is connected with the guide lifting component. Preferably, the traction rope is a steel wire rope, both ends of which are fixed on end fixed bases, and the steel wire rope includes an upper steel wire rope, a middle steel wire rope, a lower steel wire rope and an end steel wire rope; the upper steel wire rope, the middle steel wire rope, the lower steel wire rope and the end steel wire rope and the guide lifting component realize the construction and exit of the fence system.

[0006] Preferably, the guide lifting member is used to be installed on the locking beam, and the guide lifting member includes a support plate, a connecting rod and a support pulley mounting shaft; The support plate is provided with 6 support pulley mounting shaft holes; The two support plates are connected by a connecting rod, and a support pulley installation space is reserved between the two support plates; A supporting pulley is installed on the supporting pulley installation shaft; Four guide lifting components and steel wire ropes form a fence.

[0007] Preferably, the supporting pulley comprises a large diameter pulley, a medium diameter pulley and a small diameter pulley; The supporting pulleys on each guide lifting component are divided into two groups, A and B. Group A is divided into three height levels from top to bottom, and large-diameter pulleys, medium-diameter pulleys and small-diameter pulleys are installed respectively; in addition, group B is arranged at the lower corner of the guide lifting component, and is divided into three height levels from bottom to top, and large-diameter pulleys, medium-diameter pulleys and small-diameter pulleys are installed respectively.

[0008] Preferably, both ends of the upper steel wire rope, the middle steel wire rope and the lower steel wire rope are installed on the end fixing base, the upper steel wire rope is passed around a large diameter pulley and a small diameter pulley; the middle steel wire rope is passed around a large diameter pulley and a small diameter pulley; the lower steel wire rope is passed around a large diameter pulley and a small diameter pulley; The end steel wire rope is used to connect two guide lifting components, and the end steel wire rope and the upper steel wire rope are perpendicular to each other; the upper steel wire rope, the middle steel wire rope and the lower steel wire rope are located on the same plane. Preferably, the support pulley of group A is used to divide the upper wire rope, the middle wire rope and the lower wire rope into three heights for their protection; the support pulley of group B is used for guiding; and the end wire ropes are arranged in three height levels.

[0009] Preferably, the power receiving device comprises a mounting box, a quick connector, a thrust bearing, an input bevel gear, an output bevel gear and a linkage transmission shaft; A linkage transmission shaft is rotatably installed in the installation box, and an output bevel gear is arranged on the linkage transmission shaft, and the output bevel gear meshes with the input bevel gear; the input bevel gear is connected to the quick connector through a rotating shaft, and the rotating shaft is installed on the installation box through a thrust bearing.

[0010] Preferably, the power receiving device further comprises a driving bevel gear, which is coaxially mounted on the linkage transmission shaft; The transmission mechanism is used to be installed on both sides of the travel area of ​​the hole locking beam; the transmission mechanism includes a supporting track seat, a receiving bevel gear and a transmission screw; The receiving bevel gear is meshed with the driving bevel gear, and the receiving bevel gear is coaxially connected with the transmission screw rod; the transmission screw rod is rotatably installed on the supporting track seat.

[0011] Preferably, the transmission connecting member comprises a locking beam connecting nut, the locking beam connecting nut is threadably matched with the transmission screw, and the locking beam connecting nut is used to be fixed to the locking beam.

[0012] The operation method of the follower mechanism of the locking beam and the protective fence of the hydropower station is as follows: Install the transmission system: install the power receiving device at the predetermined position and ensure that it is properly connected to the external power source; Install the transmission mechanism: fix the support rail seat on both sides of the locking beam walking area; install the receiving bevel gear and transmission screw to ensure that the transmission screw is firmly connected to the support rail seat; Install the transmission connector: Install the transmission connector on the transmission screw rod, making sure it is firmly fixed to the locking beam; Install the fence system: fix the end fixing base, install the wire rope, including the upper wire rope, middle wire rope, lower wire rope and end wire rope; install the guide lifting component on the locking beam, configure the support pulley, and ensure that the wire rope passes through the pulley correctly; Start the power source: connect the external power source through the quick connector, start the power receiving device, and drive the bevel gear to start rotating; Transmission mechanism works: the bevel gear drives the transmission screw to rotate, and the transmission connector moves along the transmission screw, driving the locking beam to move; Fence system action: When the locking beam moves, the guide lifting component moves accordingly, and the wire rope adjusts its position through the supporting pulley to complete the construction or withdrawal of the fence.

[0013] The present invention can achieve the following beneficial effects: The present invention adopts the coordinated design of the transmission system and the fence system, adopts bevel gear transmission and screw drive, converts the input of the external power source (such as electric drill, hydraulic motor) into the linear movement of the locking beam, and drives the layered guidance of the wire rope of the fence system through the transmission connector to achieve synchronous action. Through the diameter difference of the large-diameter pulley, the medium-diameter pulley and the small-diameter pulley, the upper, middle and lower wire ropes are guided in layers to ensure that the fence lifting trajectory is accurate and controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a front view of the follower mechanism of the locking beam and the protective fence of the hydropower station of the present invention; Figure 2 This is a diagram of the use state (retracted state) of the follower mechanism of the locking beam and the protective fence of the hydropower station of the present invention; Figure 3 This is a diagram of the use state (expanded state) of the follower mechanism of the locking beam and the protective fence of the hydropower station of the present invention; Figure 4 The present invention is a support plate and connecting rod structure diagram; Figure 5 This is a three-dimensional structural diagram of the guide lifting component of the present invention; Figure 6 This is a structural diagram of the end fixing base of the present invention; Figure 7 This is a structural diagram of the power receiving device of the present invention; Figure 8 It is a structural diagram of the transmission mechanism of the present invention; Fig. 9 It is a structural diagram of the transmission connecting member of the present invention.

[0015] In the figure: wire rope 30, upper wire rope 301, middle wire rope 302, lower wire rope 303, end wire rope 304, guide lifting component 31, support plate 311, support pulley mounting hole 311-1, connecting rod 312, support pulley mounting shaft 313, support pulley 32, large diameter pulley 321, middle diameter pulley 322, small diameter pulley 323, end fixed base 33, U-shaped structure 331, fixed cross bar 332, safety control system, power receiving device 21, installation box 210, quick connector 211, thrust bearing 212, input bevel gear 213, output bevel gear 214, linkage transmission shaft 215, driving bevel gear 216, transmission mechanism 22, support rail seat 222, receiving bevel gear 221, transmission screw 220, transmission connecting piece 23, locking beam connecting screw sleeve 230, thread 230-1. DETAILED DESCRIPTION

[0016] The preferred solution is Figures 1 to 9 As shown in the figure, the follow-up mechanism of the locking beam and the protective fence of the hydropower station has the following structures: The steel wire rope 30 is a mature product in the market. Both ends of the main body are fixed on the end fixing base 33. It is installed on each component of the fence system in three layers, which are composed of an upper steel wire rope 301, a middle steel wire rope 302, a lower steel wire rope 303 and an end steel wire rope 304. It can realize the construction and withdrawal of the fence system with the guide lifting component 31; The guide lifting member 31, the main body of which is installed on the locking beam, is mainly composed of a support plate 311, a connecting rod 312 and a support pulley mounting shaft 313. The member is effectively connected by two template support plates 311 through a connecting rod 312, and a support pulley 32 installation space is reserved in the middle. The main body height is 1250mm, and support pulley mounting holes 311-1 are respectively provided at the positions of 400mm, 800mm and 1200mm in height of the support plate 311 for installing the support pulley 32; The support pulley 32 is installed on the support pulley mounting shaft 313 of the guide lifting member 31, and mainly consists of a large-diameter pulley 321, a medium-diameter pulley 322 and a small-diameter pulley 323, which can guide and support the three-layer steel wire rope 30 in layers. When the hole locking beam 7 is withdrawn, the steel wire rope 30 is raised in an orderly manner, and a safe and reliable isolation fence is effectively set up at the hole. When the hole locking beam 7 is put into the hole, the steel wire rope 30 is lowered in an orderly manner, and the enclosure function of the fence system is withdrawn to ensure that the hole is not blocked. The end is fixed with a base 33, and the main body is a U-shaped structure 331. Three cross bars 332 for fixing three layers of steel wire ropes are installed in the middle. The main body is installed at the two ends of the locking beam support track at the hole position to fix the fence steel wire rope 30 to ensure the safety and reliability of the steel wire rope during use.

[0017] The present invention also includes a safety control system installed at both ends of the support rail, which mainly detects the switch position of the locking beam at the hole mouth and the walking trajectory on the rail. When the locking beam fails to perform the work task correctly, the signal can be transmitted to the operator in the form of sound and light alarm. The operator can stop the operation in time according to the situation to ensure the safe operation of the device system at the hole mouth.

[0018] The power receiving device 21 is the main receiving device of the power source of the present invention, and transmits the external input power to the transmission system after the torque amplification of the device to achieve effective driving of the operation object, ensuring that the device can operate safely and effectively as required. The power source can be selected from existing products on the market, such as handheld electric drills, hydraulic motors, etc. The device includes an installation box 210, a quick connector 211, a thrust bearing 212, an input bevel gear 213, an output bevel gear 214, a linkage transmission shaft 215 and a driving bevel gear 216.

[0019] The transmission mechanism 22 is installed on both sides of the walking area of ​​the locking beam of the hole, and can transform and transmit the external driving force to the locking beam through its own mechanism, so as to realize the automatic insertion and withdrawal of the locking beam on demand and the effective operation of the fence system at the hole. The mechanism includes a supporting rail seat 222, a receiving bevel gear 221 and a transmission screw 220, wherein the two ends of the transmission screw 220 are symmetrically processed with positive and negative thread grooves, and cooperate with the transmission connector 230 for transmission, so as to realize the opposite synchronous movement of the locking beam 7; The transmission connector 23 is a customized product used to effectively connect the on-site locking beam with the transmission mechanism, and mainly includes a locking beam connecting screw sleeve 230, wherein the locking beam connecting screw sleeve 230 is a rectangular parallelepiped with a thread 230-1 in the middle, which can be used in conjunction with the transmission screw 220, and its body is welded to the locking beam rib plate. The operation method of the follower mechanism of the locking beam and the protective fence of the hydropower station is as follows: Install the transmission system: install the power receiving device 21 at the predetermined position and ensure that it is properly connected to the external power source; Install the transmission mechanism: fix the support rail seat 222 on both sides of the locking beam walking area; install the receiving bevel gear 221 and the transmission screw 220 to ensure that the transmission screw is firmly connected to the support rail seat; Install the transmission connector: Install the transmission connector 23 on the transmission screw rod, ensuring that it is firmly fixed to the locking beam; Install the fence system: fix the end fixing base 33, install the wire rope 30, including installing the upper wire rope 301, the middle wire rope 302, the lower wire rope 303 and the end wire rope 304; install the guide lifting member 31 on the locking beam, configure the support pulley 32, and ensure that the wire rope passes through the pulley correctly; Start the power source: connect the external power source through the quick connector 211, start the power receiving device, and drive the bevel gear to start rotating; The transmission mechanism works: the bevel gear 221 drives the transmission screw 220 to rotate, and the transmission connector 23 moves along the transmission screw, driving the locking beam to move; Fence system action: When the locking beam moves, the guide lifting member 31 moves accordingly, and the wire rope adjusts its position through the supporting pulley 32 to complete the erection or withdrawal of the fence.

[0020] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. The follow-up mechanism for locking beams and protective fences of a hydropower station is characterized by: The invention comprises a transmission system and a fence system; the transmission system comprises a power receiving device (21), a transmission mechanism (22) and a transmission connecting member (23); the power receiving device (21) and the transmission mechanism (22) are in transmission cooperation; the transmission mechanism (22) and the transmission connecting member (23) are in transmission cooperation; a plurality of transmission connecting members (23) are installed on the transmission mechanism (22); The fence system comprises a traction rope and a guide lifting component (31); the traction rope and the guide lifting component (31) cooperate to realize the construction and withdrawal of the fence system; The transmission connection member (23) is connected to the guide lifting member (31).

2. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 1 is characterized by: The traction rope is a steel wire rope (30), both ends of which are fixed on an end fixing base (33), and the steel wire rope (30) comprises an upper steel wire rope (301), a middle steel wire rope (302), a lower steel wire rope (303) and an end steel wire rope (304); the upper steel wire rope (301), the middle steel wire rope (302), the lower steel wire rope (303) and the end steel wire rope (304) and the guide lifting component (31) realize the construction and withdrawal of the fence system.

3. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 2 is characterized by: The guide lifting component (31) is used to be installed on the locking beam, and the guide lifting component (31) comprises a support plate (311), a connecting rod (312) and a support pulley installation shaft (313); The support plate (311) is provided with six support pulley mounting shaft holes (311-1); The two support plates (311) are connected via a connecting rod (312), and a space for installing a support pulley (32) is reserved between the two support plates (311); A supporting pulley (32) is mounted on the supporting pulley mounting shaft (313); The four guide lifting components (31) and the steel wire rope (30) form a fence.

4. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 3 is characterized by: The supporting pulley (32) comprises a large-diameter pulley (321), a medium-diameter pulley (322) and a small-diameter pulley (323); The supporting pulleys (32) on each guide lifting member (31) are divided into two groups, A and B, wherein the A group is divided into three height levels from top to bottom and is respectively installed with a large-diameter pulley (321), a middle-diameter pulley (322) and a small-diameter pulley (323); and the B group is arranged at the lower corner of the guide lifting member (31) and is divided into three height levels from bottom to top and is respectively installed with a large-diameter pulley (321), a middle-diameter pulley (322) and a small-diameter pulley (323).

5. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 4 is characterized by: Both ends of the upper steel wire rope (301), the middle steel wire rope (302) and the lower steel wire rope (303) are mounted on an end fixing base (33); the upper steel wire rope (301) is passed around a large-diameter pulley (321) and a small-diameter pulley (323); the middle steel wire rope (302) is passed around a large-diameter pulley (321) and a small-diameter pulley (323); and the lower steel wire rope (303) is passed around a large-diameter pulley (321) and a small-diameter pulley (323); The end steel wire rope (304) is used to connect the two guide lifting components (31), and the end steel wire rope (304) and the upper steel wire rope (301) are perpendicular to each other; the upper steel wire rope (301) and the middle steel wire rope (302) and the lower steel wire rope (303) are located on the same plane.

6. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 1, characterized in that: The support pulley (32) of group A is used to divide the upper steel wire rope (301), the middle steel wire rope (302) and the lower steel wire rope (303) into three heights for their protection; the support pulley (32) of group B is used for guiding; the end steel wire rope (304) is arranged in three height levels.

7. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 1, characterized in that: The power receiving device (21) comprises a mounting box (210), a quick connector (211), a thrust bearing (212), an input bevel gear (213), an output bevel gear (214), and a linkage transmission shaft (215); A linkage transmission shaft (215) is rotatably mounted in the mounting box (210), and an output bevel gear (214) is disposed on the linkage transmission shaft (215), and the output bevel gear (214) meshes with an input bevel gear (213); the input bevel gear (213) is connected to a quick connector (211) via a rotating shaft, and the rotating shaft is mounted on the mounting box (210) via a thrust bearing (212).

8. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 7, characterized in that: The power receiving device (21) further comprises a driving bevel gear (216), wherein the driving bevel gear (216) is coaxially mounted on the linkage transmission shaft (215); The transmission mechanism (22) is used to be installed on both sides of the travel area of ​​the hole locking beam; the transmission mechanism (22) comprises a supporting track seat (222), a receiving bevel gear (221) and a transmission screw (220); The receiving bevel gear (221) is meshed with the driving bevel gear (216), and the receiving bevel gear (221) is coaxially connected with the transmission screw (220); the transmission screw (220) is rotatably mounted on the support track seat (222).

9. The follow-up mechanism for locking beams and protective fences of a hydropower station according to claim 8, characterized in that: The transmission connection member (23) comprises a locking beam connection screw sleeve (230), the locking beam connection screw sleeve (230) is threadably matched with the transmission screw rod (220), and the locking beam connection screw sleeve (230) is used to be fixed to the locking beam.

10. The method for operating the follower mechanism of the locking beam and the protective fence of a hydropower station according to claim 1, characterized in that: Install the transmission system: install the power receiving device (21) at a predetermined position and ensure that it is properly connected to the external power source; Install the transmission mechanism: fix the support rail seat (222) on both sides of the locking beam walking area; install the receiving bevel gear (221) and the transmission screw (220), and ensure that the transmission screw is firmly connected to the support rail seat; Install the transmission connector: Install the transmission connector (23) on the transmission screw rod, ensuring that it is firmly fixed to the locking beam; Install the fence system: fix the end fixing base (33), install the steel wire rope (30), including installing the upper steel wire rope (301), the middle steel wire rope (302), the lower steel wire rope (303) and the end steel wire rope (304); install the guide lifting member (31) on the locking beam, configure the support pulley (32), and ensure that the steel wire rope passes through the pulley correctly; Starting the power source: connecting the external power source through the quick connector (211), starting the power receiving device, and driving the bevel gear to start rotating; The transmission mechanism works by receiving the bevel gear (221) to drive the transmission screw (220) to rotate, and the transmission connecting member (23) moves along the transmission screw, driving the locking beam to move; Fence system action: When the locking beam moves, the guide lifting member (31) moves accordingly, and the wire rope adjusts its position through the support pulley (32), thereby completing the erection or withdrawal of the fence.

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