Manual and electric dual-purpose gate locking device

Abstract

The invention provides a manual and electric dual-purpose gate locking device. A gate can be quickly locked by utilizing linkage of an electric driving mechanism or manually applying small thrust to a manual operation rod; the locking device does not need any other external force or power during unlocking, the locking device automatically completes the unlocking action when the gate is lifted upwards, it is ensured that the unlocking action can still be smoothly completed under the condition that a driving mechanism of the locking device loses power or breaks down, and reliable guarantee is provided for remote automatic control of the gate. Besides, when the driving mechanism is in a failure, maintenance or debugging state, the electric linkage rod is pulled out, then the manual operation rod is manually operated, and the locking device can still be continuously put into use. The device is simple in structure, large in bearing capacity, low in equipment manufacturing and mounting requirements, low in operation energy consumption, small in project investment, easy and convenient to operate, capable of meeting the operation requirements of multiple functions and capable of being widely applied to water conservancy and hydropower and pumped storage projects.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy and hydropower and pumped storage projects, and particularly relates to a hand-electric dual-purpose gate locking device. Background Art

[0002] In water conservancy and hydropower and pumped storage projects, the gate is generally locked above the orifice in the non-water retaining state. Usually, a pair of locking support plates are arranged at appropriate height positions on the left and right sides of the gate leaf structure, and then a pair of locking devices are arranged on both sides of the gate slot. When the gate needs to be locked, first, the support structures of the locking devices on both sides are extended manually or electrically to directly below the gate locking support plates, and then the gate locking support plates are supported on the support structures of the locking devices when the gate drops, thus completing the locking; when the gate needs to be unlocked, the support structures of the locking devices on both sides are withdrawn manually or electrically from directly below the gate locking support plates so that the gate can be opened and closed freely up and down.

[0003] At present, the gate locking device generally adopts manual operation or electric drive. The manually operated gate locking device has a large labor intensity and a low degree of automation, and the locking device needs to be manually operated before the gate is opened and closed, so that the gate cannot have the function of remote automatic control. The electrically driven locking device also has some disadvantages, such as: large occupied space; the bearing structure bears a large bending moment and has a large cross-section; the driving mechanism and the support structure are hinged, which requires a high precision in the stroke control of the driving mechanism and also has high requirements for equipment installation; the driving mechanism has a complex structure and large operating energy consumption. Moreover, if the electrically driven locking device suddenly loses power or its driving mechanism fails during the unlocking process, the locking device cannot be automatically unlocked, and thus the gate still cannot have the function of remote automatic control. In addition, when the driving mechanism of the electrically driven locking device fails, is under maintenance or debugging, the locking device usually cannot be put into use. Summary of the Invention

[0004] Aiming at the defects existing in the prior art, the present invention provides a hand-electric dual-purpose gate locking device, which can effectively solve the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A hand-electric dual-purpose gate locking device includes a base, a rotating support arm, a rotating shaft and bearings, a counterweight arm, a manual operating rod, an electric linkage rod, a driving mechanism and a protective cover. The base is fixed on the side walls of the gate slot on both sides. The rotating shaft passes through the lower end of the rotating support arm and is installed in the shaft hole of the base, and bearings are installed between the rotating shaft and the rotating support arm. The counterweight arm is connected with the rotating support arm to form an integral structure. This integral structure can rotate around the rotating shaft under the control of the driving mechanism combined with the electric linkage rod or the operation of the manual operating rod. The bottom of the driving mechanism is fixed to the base, and the protective cover is fixed to the base.

[0006] Furthermore, the base includes a bottom plate, front and rear support webs, a counterweight limit plate, a rotating support arm limit plate, an operating rod storage sleeve, and a drive mechanism seat plate. A shaft hole for installing a rotating shaft is provided below the front and rear support webs near the gate side. A rectangular opening slot is provided directly above the front side support web to allow the electric linkage rod to rotate around the rotating shaft in the slot. The counterweight limit plate is arranged in the middle of the front and rear support webs away from the gate side. The rotating support arm limit plate is arranged in the middle of the front and rear support webs near the gate side. The drive mechanism seat plate is arranged in the middle of the bottom plate, and its position is on the side away from the gate of the shaft hole of the rotating shaft. The operating rod storage sleeve is arranged on the front side of the front and rear support webs.

[0007] Furthermore, the rotating support arm includes a support structure, an upper travel switch, and a side travel switch. A shaft hole is provided at the lower end of the support structure for connecting to the base after installing a rotating shaft and bearings. Arc-shaped convex platforms are provided directly above the upper end of the support structure and on the side near the gate. When locked, they contact the gate locking support plate and the gate side beam web respectively. The upper travel switch is installed directly above the upper end of the support structure, and a signal is triggered when the arc-shaped convex platform directly above the upper end of the support structure contacts the gate locking support plate. The side travel switch is installed on the side of the upper end of the support structure, and a signal is triggered when the arc-shaped convex platform near the gate side of the upper end of the support structure contacts the gate side beam web.

[0008] Furthermore, the bearing adopts a self-lubricating cylindrical bearing.

[0009] Furthermore, the counterweight arm includes a counterweight bearing structure, counterweight blocks, and counterweight pins. The counterweight bearing structure is a welded structure composed of front and rear double webs, intermediate stiffening plates, and end plates. The end of the counterweight bearing structure near the gate side is fixedly connected to the middle of the support structure in the rotating support arm. Through holes and guide sleeves are provided in the middle of the front and rear double webs of the counterweight bearing structure to facilitate the insertion of the electric linkage rod. A hole seat for inserting a manual operating rod is provided on the intermediate stiffening plate of the counterweight bearing structure. An opening slot is provided above the end of the counterweight bearing structure away from the gate side, and the counterweight blocks are suspended in the opening slot at the end of the counterweight bearing structure away from the gate side through the counterweight pins.

[0010] Furthermore, both the manual operating rod and the electric linkage rod are rod-shaped structures, and a spherical operating handle is provided at one end.

[0011] Furthermore, the drive mechanism includes an electric elevator and a bracket. The bottom of the electric elevator is fixed to the drive mechanism seat plate, and the telescopic rod of the electric elevator is placed vertically. The bracket is installed at the top of the telescopic rod of the electric elevator, and its width is smaller than the net distance between the front and rear webs in the counterweight bearing structure. The bracket moves up and down as the telescopic rod of the electric elevator expands and contracts.

[0012] Further, the protective cover is of a thin-wall structure, covering the side of the base away from the gate, the upper part, the driving mechanism and the counterweight arm. A long round hole is provided in the upper part of the protective cover to facilitate the insertion of the manual operating rod into the base of the counterweight bearing structure and then rotation within the hole around the rotation axis. An arc-shaped long round hole centered on the rotation axis is provided on the front of the protective cover to facilitate the insertion of the electric linkage rod into the pin hole of the counterweight bearing structure and then rotation within the hole around the rotation axis. Labels in a locked state are provided at the ends of each long round hole, and ventilation holes and wiring holes are provided below the side of the protective cover away from the gate.

[0013] In the manual mode, the lower end of the manual operating rod passes through the long round hole in the upper part of the protective cover and is inserted into the socket of the counterweight bearing structure, thus connecting with the counterweight arm; in the electric mode, it is placed in the operating rod storage sleeve on the base.

[0014] In the manual mode of the locking device, the electric linkage rod is placed in the operating rod storage sleeve on the base; in the electric mode, it passes through the arc-shaped long round hole on the front of the protective cover and is inserted into the pin hole in the middle of the counterweight bearing structure to connect with the counterweight arm.

[0015] The beneficial effects of the present invention are as follows: The hand-electric dual-use gate locking device provided by the present invention can quickly lock the gate by using the linkage of the electric driving mechanism or by applying a small thrust manually to the manual operating rod; when unlocking the locking device, no other external force or power is required. When the gate is lifted upward, the locking device automatically completes the unlocking action, ensuring that the unlocking action can still be successfully completed in the case of power failure or malfunction of its driving mechanism, providing a reliable guarantee for the remote automatic control of the gate. In addition, in the case of failure, maintenance or debugging of its driving mechanism, after pulling out the electric linkage rod and then manually operating the manual operating rod, the locking device can still continue to be used. The device provided by the present invention has a simple structure, large bearing capacity, low requirements for equipment manufacturing and installation, low operating energy consumption, small project investment, simple and convenient operation, can meet the operation requirements of various functions, and can be widely used in water conservancy and hydropower and pumped storage projects. Description of the Drawings

[0016] Figure 1 is the elevation view of the hand-electric dual-use locking device provided by the present invention;

[0017] Figure 2 is the three-dimensional view of the base provided by the present invention;

[0018] Figure 3 is the three-dimensional view of the rotating support arm provided by the present invention;

[0019] Figure 4 is the three-dimensional view of the counterweight arm provided by the present invention;

[0020] Figure 5 is the manual operating rod provided by the present invention

[0021] Figure 6 Elevation view of the electric linkage rod provided by the present invention;

[0022] Figure 7 Stereogram of the drive mechanism provided by the present invention;

[0023] Figure 8 Stereogram of the protective cover provided by the present invention;

[0024] In the figure: 1, base; 2, rotating support arm; 3, rotating shaft; 4, bearing; 5, counterweight arm; 6, manual operating rod; 7, electric linkage rod; 8, drive mechanism; 9, protective cover; 21, support structure; 22, upper travel switch; 23, side travel switch; 51, counterweight structure; 52, counterweight pin shaft; 53, counterweight block; 81, bracket; 82, telescopic rod; 83, electric elevator. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "upper", "middle", "lower", "inner", "outer", "both sides", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Refer to Figure 1 , the present invention provides a hand-electric dual-purpose gate locking device, including a base 1, a rotating support arm 2, a rotating shaft 3 and a bearing 4, a counterweight arm 5, a manual operating rod 6, an electric linkage rod 7, a drive mechanism 8 and a protective cover 9.

[0029] The base 1 is fixed on the concrete on both sides of the gate slot; the rotating shaft 3 passes through the lower end of the rotating support arm 2 and is installed in the shaft hole of the base 1; a bearing 4 is installed between the rotating shaft 3 and the rotating support arm 2; the counterweight arm 5 is connected to the rotating support arm 2 by bolts or welding to form an integral structure, and this integral structure can rotate around the rotation 3 under the control of the drive mechanism 8 in combination with the electric linkage rod 7 or operating the manual operating rod 6. The bottom of the drive mechanism 8 is fixed to the base 1 by bolts; the protective cover 9 is fixed to the base 1 by bolts.

[0030] As a specific structure, refer to Figure 2 , the base 1 is a welded structure composed of multiple steel plates and pipes, including a bottom plate 11, front and rear support webs 12, a counterweight limit plate 13, a rotating support arm limit plate 14, an operating rod storage sleeve 15, and a drive mechanism seat plate 16; shaft holes for installing the rotating shaft 3 are provided below the front and rear support webs 12 near the gate side, and a rectangular opening groove is provided directly above the front side support web to facilitate the electric linkage rod 7 to rotate around the rotating shaft 3 in the groove; the counterweight limit plate 13 is arranged in the middle of the front and rear support webs 12 on the side away from the gate; the rotating support arm limit plate 14 is arranged in the middle of the front and rear support webs 12 on the side close to the gate; the drive mechanism seat plate 16 is arranged in the middle of the bottom plate 11, and its position is on the side away from the gate of the shaft hole of the rotating shaft 3; the operating rod storage sleeve 15 is arranged on the front side of the front and rear support webs 12.

[0031] As a specific structure, refer to Figure 3 , the rotating support arm 2 includes a support structure 21, an upper travel switch 22, and a side travel switch 23; a shaft hole is provided at the lower end of the support structure 21 so that after installing the rotating shaft 3 and the bearing 4, it can be connected to the base 1; arc-shaped bosses are provided directly above the upper end of the support structure 21 and on the side close to the gate. When locked, they contact the gate locking support plate and the gate side beam web respectively; the upper travel switch 22 is installed directly above the upper end of the support structure 21, and a signal is triggered when the arc-shaped boss directly above the upper end of the support structure 21 contacts the gate locking support plate; the side travel switch 23 is installed on the side of the upper end of the support structure 21, and a signal is triggered when the arc-shaped boss on the side of the upper end of the support structure 21 close to the gate contacts the gate side beam web.

[0032] The bearing 4 adopts a self-lubricating cylindrical bearing.

[0033] As a specific structure, refer to Figure 4, the counterweight arm 5 includes a counterweight bearing structure 51, counterweight blocks 53, and counterweight pins 52; the counterweight bearing structure 51 is a welded structure composed of front and rear double webs, intermediate stiffening plates, and end plates. The end of the counterweight bearing structure 51 close to the gate side is connected to the middle of the support structure 21 in the rotating support arm 2 by bolts or welding. The counterweight bearing structure 51 is provided with pin holes and guide sleeves in the middle of the front and rear double webs to facilitate the insertion of the electric linkage rod 7. A hole seat for inserting the manual operating rod 6 is provided on the intermediate stiffening plate of the counterweight bearing structure 51. An opening groove is provided above the end of the counterweight bearing structure 51 far from the gate side; the counterweight blocks 53 are suspended in the opening groove at the end of the counterweight bearing structure 51 far from the gate side through the counterweight pins 52.

[0034] As a specific structure, refer to Figure 5 and Figure 6 , both the manual operating rod 6 and the electric linkage rod 7 are rod-shaped structures, and a spherical operating handle is provided at one end.

[0035] As a specific structure, refer to Figure 7 , the driving mechanism 8 includes an electric lift 83 and a bracket 81; the electric lift 83 is an industrial standardized product, and the telescopic rod 82 of the electric lift 83 is placed vertically; the bracket 81 is installed at the top of the telescopic rod 82 of the electric lift 83, and its width is less than the net distance between the front and rear webs in the counterweight bearing structure 51. The bracket 81 moves up and down with the telescopic movement of the telescopic rod 82 of the electric lift 83.

[0036] As a specific structure, refer to Figure 8 , the protective cover 9 is a thin-walled structure that covers the side and upper part of the base 1 far from the gate, the driving mechanism 8, and the counterweight arm 5; a long circular hole 91 is provided in its upper part to facilitate the manual operating rod 6 to rotate in the hole around the rotation axis 3 after being inserted into the base of the counterweight bearing structure 51; an arc-shaped long circular hole 92 centered on the rotation axis 3 is provided on its front surface to facilitate the electric linkage rod 7 to rotate in the hole around the rotation axis 3 after being inserted into the pin hole of the counterweight bearing structure 51. Locking state labels are provided at the ends of each long circular hole; a ventilation hole 93 and a wiring hole 94 are provided below the side of the protective cover 9 far from the gate.

[0037] The use method and principle of the hand-electric dual-purpose gate locking device provided by the present invention are as follows:

[0038] After the counterweight arm 5 is fixedly connected to the rotating support arm 2, the whole can rotate around the rotating shaft 3. The counterweight blocks 53 in the rotating support arm 2 and the counterweight arm 5 are respectively located on the side close to the gate and the side far from the gate of the rotating shaft 3. A bearing 4 is installed on the rotating shaft 3, so that the frictional torque for the mechanism to rotate is relatively small. When setting the weight of the counterweight block 53, make the torque generated by the weight of the counterweight block 53 on the center of the rotating shaft 3 slightly greater than the sum of the torque generated by the self-weight of the rotating support arm 2 on the center of the rotating shaft 3 and the frictional torque of the rotating shaft 3. That is, when there is no limit for the counterweight arm 5 and the rotating support arm 2, the whole after the counterweight arm 5 and the rotating support arm 2 are connected will rotate in the direction away from the gate. In the electric mode of the locking device, the electric linkage rod 7 will pass through the protective cover and insert into the pin hole of the counterweight bearing structure 51. At this time, the electric linkage rod 7 is connected to the counterweight arm 5, and is integrally connected to the rotating support arm 2 and rotates around the rotating shaft 3. Since a driving mechanism 8 is arranged below the electric linkage rod 7, under the action of the counterweight block 53, the electric linkage rod 7, the counterweight arm 5 and the rotating support arm 2 rotate around the rotating shaft 3 in the direction away from the gate until the electric linkage rod 7 touches the bracket 81 in the driving mechanism 8, and the electric linkage rod 7 will be supported on the bracket 81; when the electric linkage rod 7 is disassembled from the counterweight arm 5, the driving mechanism 8 is disconnected from the counterweight arm 5 and the rotating support arm 2, and the whole after the counterweight arm 5 and the rotating support arm 2 are connected will rotate in the direction away from the gate until the counterweight block 53 in the counterweight arm 5 touches the counterweight limit plate 13 in the base 1.

[0039] Since the rotating support arm 2 is in an inclined support state when the gate is locked, the rotating support arm 2 mainly bears pressure, and the concrete at the bottom of the base also only bears pressure. Different from the force-bearing of the transmission locking device, its support member bears bending moment, and part of the bottom concrete is in tension. Therefore, the locking device provided by the present invention has a better force-bearing state and a greater bearing capacity.

[0040] During the actual operation, when the gate needs to be locked, in the electric mode of the locking device, the manual operating rod 6 is placed in the operating rod storage sleeve 15 on the base 1, and the electric linkage rod 7 will pass through the protective cover and insert into the pin hole of the counterweight bearing structure 51 to establish a connection with the counterweight arm. When an instruction is issued to control the telescopic rod of the electric elevator 83 to rise, the bracket 81 pushes up the electric linkage rod 7, thereby driving the counterweight arm 5 and the rotating support arm 2 to rotate around the rotating shaft 3 towards the gate until the upper end of the rotating support arm 2 turns to directly below the gate locking support plate. When the gate continues to descend, the gate locking support plate will touch the travel switch 22. At this time, an instruction is issued to control the telescopic rod 82 of the electric elevator 83 to retract to the initial state. Since the rotating support arm 2 is pressed by the gate locking support plate under the action of the self-weight of the gate, the electric linkage rod 7 is disengaged from the bracket 81 in the driving mechanism 8. When the gate continues to descend, it will continue to drive the electric linkage rod 7, the counterweight arm 5 and the rotating support arm 2 to rotate around the rotating shaft 3 towards the gate until the web of the side beam of the gate leaf touches the travel switch 23. At this time, another instruction is issued to stop the gate from descending, and the gate locking work is completed. In the manual mode of the locking device, the electric linkage rod 7 is placed in the operating rod storage sleeve 15 on the base 1, and the driving mechanism 8 is disconnected from the counterweight arm 5 and the rotating support arm 2. The lower end of the manual operating rod 6 is inserted into the socket of the counterweight bearing structure 51 through the long round hole in the upper part of the protective cover 9, so as to be connected with the counterweight arm 5. When the manual operating rod 6 is pushed towards the gate side, it will drive the counterweight arm 5 and the rotating support arm 2 to rotate around the rotating shaft 3 towards the gate until the side surface of the upper end of the rotating support arm 2 touches the web of the side beam of the gate leaf to complete the locking.

[0041] When the gate needs to be unlocked, since the driving mechanism 8 is disconnected from the counterweight arm 5 and the rotating support arm 2, when the gate is lifted, under the action of the torque generated by the counterweight block 53, the counterweight arm 5 and the rotating support arm 2 will automatically rotate around the rotating shaft 3 away from the gate until the electric linkage rod 7 touches the bracket 81 in the driving mechanism 8 (electric mode) or the counterweight block 53 in the counterweight arm 5 touches the counterweight limit plate 13 in the base 1 (manual mode), thus automatically completing the unlocking process.

[0042] The electric and manual dual-purpose gate locking device of the present invention is a simple and reliable gate locking device. It can quickly lock the gate by using the linkage of the electric driving mechanism or by applying a small thrust to the manual operating rod manually; when the locking device is unlocked, it does not require any other external force or power. When the gate is lifted, the locking device will automatically complete the unlocking action, ensuring that the unlocking action can still be successfully completed even when the driving mechanism loses power or fails, providing a reliable guarantee for the remote automatic control of the gate. In addition, when its driving mechanism fails, is under maintenance or debugging, by removing the electric linkage rod and then manually operating the manual operating rod, the locking device can still continue to be put into use.

[0043] The present invention provides a simple and reliable hand-held and electric dual-use gate locking device, which has a simple structure, large bearing capacity, low requirements for equipment manufacturing and installation, low operating energy consumption, small project investment, simple and convenient operation, can meet the operation requirements of various functions, and can be widely used in water conservancy and hydropower and pumped storage projects.

[0044] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A flashlight and hand-operated dual-purpose gate locking device, characterized in that, It includes a base (1), a rotating support arm (2), a rotating shaft (3), a bearing (4), a counterweight arm (5), a manual operating rod (6), an electric linkage rod (7), a driving mechanism (8), and a protective cover (9). The base (1) is fixed on the side walls on both sides of the gate slot. The rotating shaft (3) passes through the lower end of the rotating support arm (2) and is installed in the shaft hole of the base (1). A bearing (4) is installed between the rotating shaft (3) and the rotating support arm (2). The counterweight arm (5) is connected to the rotating support arm (2) to form an integral structure. This integral structure can rotate around the rotating shaft (3) under the control of the driving mechanism (8) combined with the electric linkage rod (7) or by operating the manual operating rod (6). The bottom of the driving mechanism (8) is fixed to the base (1), and the protective cover (9) is fixed to the base (1).

2. The hand-operated and electric-operated gate locking device according to claim 1, wherein The base (1) includes a bottom plate (11), front and rear support webs (12), a counterweight limit plate (13), a rotating support arm limit plate (14), an operating rod storage sleeve (15), and a driving mechanism seat plate (16). A shaft hole for installing the rotating shaft (3) is provided below the front and rear support webs (12) near the gate side. A rectangular opening groove is provided directly above the front side support web for the electric linkage rod (7) to rotate around the rotating shaft (3) in the groove. The counterweight limit plate (13) is arranged in the middle of the front and rear support webs (12) on the side away from the gate, the rotating support arm limit plate (14) is arranged in the middle of the front and rear support webs (12) on the side close to the gate, the driving mechanism seat plate (16) is arranged in the middle of the bottom plate (11), and its position is on the side away from the gate of the shaft hole of the rotating shaft (3). The operating rod storage sleeve (15) is arranged on the front side of the front and rear support webs (12).

3. The hand-operated and electric-operated gate locking device according to claim 2, wherein, The rotating support arm (2) includes a support structure (21), an upper travel switch (22), and a side travel switch (23). A shaft hole is provided at the lower end of the support structure (21) for connecting to the base (1) after installing the rotating shaft (3) and the bearing (4). The upper part and the side close to the gate of the upper end of the support structure (21) are arc-shaped protrusions, which contact the gate locking support plate and the gate side beam web respectively when locked. The upper travel switch (22) is installed directly above the upper end of the support structure (21), and a signal is triggered when the arc-shaped protrusion directly above the upper end of the support structure (21) contacts the gate locking support plate. The side travel switch (23) is installed on the side of the upper end of the support structure (21), and a signal is triggered when the arc-shaped protrusion on the side close to the gate of the upper end of the support structure (21) contacts the gate side beam web.

4. The hand-operated and electric-operated gate locking device according to claim 1, characterized in that The bearing (4) adopts a self-lubricating cylindrical bearing.

5. The hand-operated and electric-operated gate locking device according to claim 3, characterized in that, The counterweight arm (5) includes a counterweight bearing structure (51), a counterweight pin shaft (52), and counterweight blocks (53). The counterweight bearing structure (51) is a welded structure composed of front and rear double webs, intermediate stiffening plates, and end plates. The end of the counterweight bearing structure (51) close to the gate side is fixedly connected to the middle of the support structure (21) in the rotating support arm (2). A pin hole and a guide sleeve are provided in the middle of the front and rear double webs of the counterweight bearing structure (51) to facilitate the insertion of the electric linkage rod (7). A hole seat for inserting the manual operation rod (6) is provided on the intermediate stiffening plate of the counterweight bearing structure (51). An opening groove is provided above the end of the counterweight bearing structure (51) far from the gate side. The counterweight blocks (53) are suspended in the opening groove at the end of the counterweight bearing structure (51) far from the gate side through the counterweight pin shaft (52).

6. The hand-operated and electric-operated gate locking device according to claim 1, wherein, The manual operation rod (6) and the electric linkage rod (7) are both rod-shaped structures, and a spherical operation handle is provided at one end.

7. The hand-operated and electric-operated gate locking device according to claim 5, characterized in that, The driving mechanism (8) includes an electric elevator (83) and a bracket (81). The bottom of the electric elevator (83) is fixed to the driving mechanism seat plate (16), and the telescopic rod (82) of the electric elevator is placed vertically. The bracket (81) is installed at the top of the telescopic rod of the electric elevator (83), and its width is smaller than the net distance between the front and rear webs in the counterweight bearing structure (51). The bracket (81) moves up and down as the telescopic rod (82) of the electric elevator (83) extends and retracts.

8. The hand-operated and electric-operated gate locking device according to claim 5, wherein The protective cover (9) is a thin-walled structure that covers the side and upper part of the base (1) far from the gate, the driving mechanism (8), and the counterweight arm (5). A long round hole (91) is provided in the upper part of the protective cover (9) to facilitate the manual operation rod (6) to rotate in the hole around the rotation shaft (3) after being inserted into the base of the counterweight bearing structure (51). An arc-shaped long round hole (92) centered on the rotation shaft (3) is provided on the front of the protective cover (9) to facilitate the electric linkage rod (7) to rotate in the hole around the rotation shaft (3) after being inserted into the pin hole of the counterweight bearing structure (51). Labels in the locked state are provided at the ends of each long round hole. A ventilation hole (93) and a wiring hole (94) are provided below the side of the protective cover far from the gate.

9. The hand-operated and electric-operated gate locking device according to claim 5, wherein, In the manual mode, the lower end of the manual operation rod (6) passes through the long round hole in the upper part of the protective cover (9) and is inserted into the hole seat of the counterweight bearing structure (51), thereby connecting to the counterweight arm (5). In the electric mode, it is placed in the operation rod storage sleeve (15) on the base (1).

10. The flashlight and hand-operated dual-purpose gate locking device according to claim 8, characterized in that, In the manual mode of the locking device, the electric linkage rod (7) is placed in the operation rod storage sleeve (15) on the base (1). In the electric mode, it is inserted into the pin hole in the middle of the counterweight bearing structure (51) through the arc-shaped long round hole (92) on the front of the protective cover (9) to connect to the counterweight arm (5).

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