A non-powered anchoring device for automatic anchoring of gantry cranes in hydropower stations

Abstract

This utility model discloses a non-powered anchoring device for automatic anchoring of gantry cranes in hydropower stations, aiming to solve the problems of high labor intensity and low efficiency of manual anchoring, and high maintenance costs and instability of automatic anchoring devices. The device consists of a base assembly, an energy storage and guiding device, a transmission mechanism assembly, and a limit protection assembly. The energy storage and guiding device includes a sleeve and an anchoring pin, with a storage spring providing buffering and assistance; the transmission mechanism adopts a gear, rack, and lever structure, which is labor-saving and reliable; the limit protection assembly ensures safe operation. In use, after the operator unlocks the device, the anchoring pin automatically anchors based on its own weight, and the storage spring provides initial power when anchoring is released. This device has a simple structure and is easy to operate, overcoming the drawbacks of traditional anchoring devices, and ensuring the safety of gantry cranes in non-working states with low cost and high reliability, making it suitable for hydropower stations and similar scenarios.

Description

Technical Field

[0001] This utility model relates to the technical field of anchoring devices for lifting equipment, and in particular to a non-powered anchoring device for automatic anchoring of gantry cranes in hydropower stations. Background Technology

[0002] Gantry cranes play a crucial role in modern industrial production, port terminals, and hydropower station projects, serving as vital components for material handling and equipment hoisting. Their reliability and stability are paramount for safe production. A gantry crane has a portal frame structure with outriggers connected to the main beam, allowing it to travel directly on ground tracks. To prevent uncontrollable factors such as strong winds from affecting the safety of the crane when not in operation, anchoring devices are required on the trolley traveling mechanism. Gantry crane anchoring devices are generally divided into manual and automatic types. Manual anchoring is achieved through direct manual operation, while automatic anchoring is driven by an electric or hydraulic cylinder in conjunction with a control system.

[0003] Many operations in the production and operation of hydropower stations require the assistance of gantry cranes, and the safety of these cranes is directly related to the safe production of the hydropower station. Currently, due to limitations in manufacturing time, reliability, economic costs, and site environment, the anchoring devices equipped on hydropower station gantry cranes are mainly manually anchored. Operators rotate a handle to screw in the bolt, thereby locking the anchoring mechanism in place. Releasing the anchor requires the operator to rotate the handle in the opposite direction, a repetitive and time-consuming process. Furthermore, the outdoor environment of gantry cranes makes components susceptible to corrosion and accelerated wear, leading to jamming and misalignment of the existing bolt drive mechanism, further increasing the difficulty of manual anchoring. Automatic anchoring devices are generally more complex in structure, prone to failure under prolonged use or complex operating conditions, and require significant maintenance, resulting in lower reliability. In addition, automatic anchoring devices have high reliability requirements for the electrical control system, hydraulic system, and sensing system, and are easily affected by extreme weather conditions such as high temperatures or extreme cold, rendering them unable to function properly.

[0004] In summary, existing gantry crane anchoring devices are insufficient to efficiently, reliably, and economically meet the safety and stability anchoring requirements under different working conditions. There is an urgent need for a new type of gantry crane anchoring device to solve these problems.

[0005] Therefore, based on the actual site conditions, we developed an anchoring device suitable for the automatic anchoring of gantry cranes in hydropower stations. This device overcomes the problems of jamming, time-consuming and labor-intensive traditional manual anchoring devices, as well as the complexity and instability of automatic anchoring systems. It enables gantry cranes in hydropower stations to automatically anchor efficiently and reliably, ensuring the safety and reliability of gantry cranes in non-working states. Summary of the Invention

[0006] The technical problems to be solved by this utility model are that manual anchoring is labor-intensive and inefficient, and the maintenance cost of automatic anchoring devices is high.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a non-powered anchoring device for automatic anchoring of a gantry crane in a hydropower station, including a base assembly fixedly connected to the gantry crane, an energy storage guide device vertically slidably arranged in the base assembly, a transmission mechanism assembly installed on the side wall of the base assembly for adjusting the lifting and lowering of the energy storage guide device, and a limit protection assembly fixedly connected to the side wall of the base assembly, with the limit protection assembly covering the transmission mechanism assembly.

[0008] Preferably, the energy storage guiding device includes a sleeve vertically fixedly connected to the base assembly and an anchor pin axially slidably connected to the sleeve. The top end of the anchor pin is provided with a top threaded hole for connecting to the output end of the transmission mechanism assembly. The inner sidewall of the sleeve is provided with a guide groove along the axial direction, and the anchor pin is provided with a guide shoulder slidably connected to the guide groove.

[0009] Preferably, the inner top of the sleeve is provided with a sandwich layer, an energy storage spring is installed in the sandwich layer, a retaining ring is connected to the top of the energy storage spring, the retaining ring is vertically slidably disposed in the sandwich layer, the top surface of the retaining ring is in contact with the bottom surface of the guide shoulder, and a sleeve end cap is provided on the top opening of the sandwich layer of the sleeve.

[0010] Preferably, the bottom end of the sleeve is provided with a flange connection structure, the flange connection structure is provided with an installation through hole for connecting with the base assembly, and the end cap of the sleeve is provided with an end cap bolt through hole for connecting with the base assembly.

[0011] Preferably, the base assembly includes a base housing, a base connecting and fixing plate fixed to the back side of the base housing, and an installation through groove disposed in the middle of the base housing. The sleeve is fixedly connected in the installation through groove. The top and bottom of the base housing are respectively provided with base top bolt through holes and base bottom bolt through holes adapted to the end cap bolt through holes and the installation through holes.

[0012] Preferably, the transmission mechanism assembly includes a gear that rotates horizontally, a rocker joint fixedly connected to the gear, and a rocker fixedly connected to the movable end of the rocker joint. The transmission mechanism assembly also includes a rack that slides vertically, the rack meshing with the gear, a connecting rod fixedly connected to the top of the rack, an anchoring pin connector hinged to the connecting rod, and the bottom end of the anchoring pin connector fixedly connected to the anchoring pin.

[0013] Preferably, the top end of the anchoring pin connector is hinged to the connecting rod by a pin shaft, with the pin shaft located directly above the anchoring pin.

[0014] Preferably, the limiting protection assembly includes a protective cover fixedly connected to the side wall of the base housing, the gear and rack are both located inside the protective cover, the protective cover is provided with a rack groove, and the rack is slidably connected in the rack groove.

[0015] Preferably, a rocker arm movable groove is vertically provided on the side wall of the protective cover, the rocker arm is located in the rocker arm movable groove, and an upper limit block and a lower limit block are fixedly provided at the top and bottom of the rocker arm movable groove, respectively.

[0016] Preferably, a locking pin is horizontally slidably connected to the rocker joint, and an anchoring locking hole and an unlocking locking hole are respectively provided at the top and bottom of the protective cover sidewall. When the rocker is rotated to the top, the locking pin is aligned with the anchoring locking hole, and when the rocker is rotated to the bottom, the locking pin is aligned with the unlocking locking hole.

[0017] This utility model provides a non-powered anchoring device for automatic anchoring of gantry cranes in hydropower stations, which has the following beneficial effects.

[0018] 1. The device has a simple structure and is easy to operate. Only one operator is needed to unlock the anchoring device, and the anchor rod can automatically enter the anchor based on its own weight. The entire anchoring process does not require any external power source such as electricity or hydraulics. The reliability and durability of the locking can be ensured solely by the ingenious design and interaction of the mechanical structure itself.

[0019] 2. A lever mechanism and a rack and pinion mechanism are used as the transmission device for releasing the anchor, saving effort for the operator while ensuring effective and reliable transmission. Furthermore, an internal energy storage and guiding device is installed, storing part of the gravitational potential energy of the anchor rod during the automatic anchoring process. This serves as a buffer during automatic anchoring and provides initial power for the operator when releasing the anchor. This effectively solves the problems of frequent jamming and time-consuming operation faced by existing anchoring devices, while avoiding the drawbacks of complex and unstable automatic anchoring systems, providing a solid guarantee for the safety and reliability of the gantry crane in non-operating states. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the base structure in an embodiment of the present utility model.

[0023] Figure 3 This is a schematic diagram of the transmission mechanism assembly in an embodiment of the present utility model.

[0024] Figure 4This is a schematic diagram of the energy storage guiding device in an embodiment of this utility model.

[0025] Figure 5 This is a schematic diagram of the limit protection assembly in an embodiment of the present utility model.

[0026] Figure 6 This is a schematic diagram of the structure of this utility model in the anchored state.

[0027] Figure 7 This is a schematic diagram of the structure of this utility model embodiment in the unanchored state.

[0028] In the diagram: 0. Ground pit; 1. Base assembly; 101. Base housing; 102. Base connecting and fixing plate; 103. Top bolt through hole of base; 104. Bottom bolt through hole of base; 105. Bearing mounting seat; 106. Mounting through groove; 2. Transmission mechanism assembly; 201. Bearing; 202. Gear; 203. Rack; 204. Connecting rod; 205. Pin; 206. Anchor pin connector; 20601. Threaded hole; 207. Rocker joint; 20701. Locking hole; 208. Rocker; 3. Energy storage guide device; 301 1. Sleeve; 30101. Mounting through hole; 30102. Guide groove; 302. Anchor pin; 30201. Top threaded hole; 303. Energy storage spring; 304. Retaining ring; 305. Sleeve end cap; 30501. End cap bolt through hole; 306. Guide shoulder; 4. Limit protection assembly; 401. Protective cover; 40101. Rack slide groove; 40102. Rocker arm movable groove; 402. Locking pin; 40201. Anchoring locking hole; 40202. Unlocking locking hole; 403. Upper limit block; 404. Lower limit block. Detailed Implementation

[0029] This utility model provides a non-powered anchoring device for automatic anchoring of a gantry crane in a hydropower station, including a base assembly 1 fixedly connected to the gantry crane, an energy storage guide device 3 vertically slidably arranged in the base assembly 1, a transmission mechanism assembly 2 installed on the side wall of the base assembly 1 for adjusting the lifting and lowering of the energy storage guide device 3, and a limit protection assembly 4 fixedly connected to the side wall of the base assembly 1, with the limit protection assembly 4 covering the transmission mechanism assembly 2.

[0030] like Figure 1 and Figure 2As shown. Base assembly 1: Provides the mounting base for the energy storage guide device 3 and the transmission mechanism assembly 2. The base housing 101 is a box-type structure welded from multiple steel plates, with a base connection fixing plate 102 fixed to the gantry crane on its back. A through hole 106 is opened in the middle for installing the energy storage guide device 3. The top plate and bottom plate are respectively provided with base top bolt through holes 103 and base bottom bolt through holes 104, which are used to effectively fix the base 1 to the energy storage guide device 3 by bolts. A bearing mounting seat 105 is provided on the side of the base housing 101 for installing the bearing 201.

[0031] like Figure 1 and Figure 3 As shown. Transmission mechanism assembly 2: Composed of bearing 201, gear 202, rack 203, connecting rod 204, connecting pin 205, anchor pin connector 206, rocker arm connector 207, and rocker arm 208. The inner ring of bearing 201 mates with bearing mounting seat 105, and the outer ring mates with gear 202. Gear 202 is connected to rocker arm connector 207 via a flat key. Rocker arm connector 207 mates with rocker arm 208 and has a locking hole 20701 for locking pin 402. Gear 202 meshes with rack 203, and rack 203 has a threaded through hole at the top, which is fixed to connecting rod 204 by bolts. Connecting rod 204 is L-shaped with an ear plate at one end, which mates with anchor pin connector 206 via connecting pin 205. The anchor pin connector 206 is provided with a threaded hole 20601, which can be fixedly connected with the threaded hole 30201 at the top of the anchor pin.

[0032] like Figure 7 As shown. Anchor release process: The transmission mechanism assembly is used to release the anchor. When anchor release is required, the operator presses down on the rocker arm 208, causing the rocker arm connector 207 to rotate, further transmitting power to the gear 202. The rotation of the gear 202 is converted into the up-and-down movement of the rack 203 through the meshing of the gear and rack. The upward movement of the rack 203 drives the movement of the connecting rod 204, thus lifting the anchor pin connector 206 upwards, thereby causing the anchor pin 302 to move upwards, thus releasing the anchor.

[0033] Specifically, the rocker arm 208 acts as a force-saving lever during the downward pressing process, and works with the gear and rack transmission to release the anchor. The energy storage spring 303 can convert its potential energy into part of the power, thereby achieving further force saving.

[0034] like Figure 1 and Figure 4As shown. Energy storage guiding device 3: A modular customized product, the main structure consists of a sleeve 301, an anchoring pin 302, an energy storage spring 303, a retaining ring 304, a sleeve end cap 305, and a guide shoulder 306. The bottom of the sleeve 301 is a flange structure with bolt mounting through holes 30101, which are fixed to the bottom bolt through holes 104 of the base by bolts. The sleeve 301 has a double-layer structure, with the energy storage spring 303 placed between the inner and outer layers, and the retaining ring 304 placed on the energy storage spring 303. The top of the anchoring pin 302 has a threaded hole 30201 for fixing to the anchoring pin connector 206. The inner wall of the sleeve is provided with four symmetrical guide grooves 30102, and the anchor pin 302 is provided with symmetrical guide shoulders 306, which can cooperate with the guide grooves 30102 to achieve guiding sliding. Finally, the sleeve end cap 305 is assembled with the sleeve 301, and is effectively fixedly connected to the top bolt through hole through the end cap bolt through hole 103, so as to achieve reliable fixed connection between the energy storage guide device and the base.

[0035] like Figure 6 As shown. Automatic anchoring process: When the gantry crane is in place and anchoring is required, after the limit protection is released, the anchoring pin 302 will descend due to its own weight. The force is transmitted to the retaining ring 304 through the guide shoulder 306. The retaining ring 304 moves downward and compresses the energy storage spring 303. During this process, the guide shoulder 306 cooperates with the guide groove 30102 to achieve directional sliding. The maximum elastic force of the compressed energy storage spring 303 is less than the weight of the anchoring pin, thus enabling automatic anchoring of the anchoring pin. Part of the gravitational potential energy of the anchoring pin is converted into elastic potential energy for storage, providing initial energy for releasing the anchor and achieving effortless anchor release.

[0036] like Figure 1 and Figure 5 As shown. Limit protection assembly 4: Composed of protective cover 401, locking pin 402, upper limit block 403, and lower limit block 404. Protective cover 401 is formed by welding stainless steel plate, and has a rack and pinion groove 40101 to ensure the accurate and reliable up and down movement of rack 203. It also has a rocker arm movement groove 40102, with upper limit block 403 and lower limit block 404 above and below it respectively, for limiting the rotation of rocker arm 208. Protective cover 401 has an anchoring locking hole 40201 and an unlocking locking hole 40202, which, together with the locking pin 402, can achieve two different locking protection states.

Claims

1. A non-powered anchoring device for automatic anchoring of gantry cranes in hydropower stations, characterized in that: It includes a base assembly (1) fixedly connected to the gantry crane, an energy storage guide device (3) vertically slidably arranged in the base assembly (1), a transmission mechanism assembly (2) installed on the side wall of the base assembly (1) for adjusting the lifting of the energy storage guide device (3), and a limit protection assembly (4) fixedly connected to the side wall of the base assembly (1), with the limit protection assembly (4) covering the transmission mechanism assembly (2).

2. A power-free anchoring device for automatic anchoring of a portal crane in a hydroelectric power station according to claim 1, characterized in that: The energy storage guide device (3) includes a sleeve (301) vertically fixedly connected in the base assembly (1) and an anchor pin (302) axially slidably connected in the sleeve (301). The top end of the anchor pin (302) is provided with a top threaded hole (30201) for connecting the output end of the transmission mechanism assembly (2). The inner sidewall of the sleeve (301) is provided with a guide groove (30102) along the axial direction. The anchor pin (302) is provided with a guide shoulder (306) slidably connected in the guide groove (30102).

3. A passive anchoring device for automatic anchoring of portal crane in a hydroelectric plant as claimed in claim 2, wherein: The sleeve (301) has an inner top layer, and an energy storage spring (303) is installed in the layer. A retaining ring (304) is connected to the top of the energy storage spring (303). The retaining ring (304) is vertically slidably disposed in the layer. The top surface of the retaining ring (304) contacts the bottom surface of the guide shoulder (306). The top opening of the sleeve (301) is provided with a sleeve end cap (305).

4. A passive anchoring device for automatic anchoring of portal crane in a hydroelectric plant as claimed in claim 3, wherein: The bottom end of the sleeve (301) is provided with a flange connection structure, and the flange connection structure is provided with an installation through hole (30101) for connecting with the base assembly (1). The sleeve end cap (305) is provided with an end cap bolt through hole (30501) for connecting with the base assembly (1).

5. A passive anchoring device for automatic anchoring of portal crane in a hydroelectric plant as claimed in claim 4, wherein: The base assembly (1) includes a base housing (101), a base connecting and fixing plate (102) fixed to the back side of the base housing (101), and an installation through groove (106) provided in the middle of the base housing (101). The sleeve (301) is fixedly connected in the installation through groove (106). The top and bottom of the base housing (101) are respectively provided with a base top bolt through hole (103) and a base bottom bolt through hole (104) adapted to the end cap bolt through hole (30501) and the installation through hole (30101).

6. A passive anchoring device for automatic anchoring of a portal crane in a hydroelectric plant according to claim 5, characterized in that: The transmission mechanism assembly (2) includes a gear (202) that rotates horizontally, a rocker joint (207) that is fixedly connected to the gear (202), and a rocker (208) that is fixedly connected to the movable end of the rocker joint (207). The transmission mechanism assembly (2) also includes a rack (203) that slides vertically. The rack (203) meshes with the gear (202). A connecting rod (204) is fixedly connected to the top of the rack (203). An anchoring pin connector (206) is hinged to the connecting rod (204). The bottom end of the anchoring pin connector (206) is fixedly connected to the anchoring pin (302).

7. A passive anchoring device for automatic anchoring of a portal crane in a hydroelectric plant according to claim 6, characterized in that: The top end of the anchoring pin connector (206) is hinged to the connecting rod (204) by a pin (205), which is located directly above the anchoring pin (302).

8. A passive anchoring device for automatic anchoring of portal crane in a hydroelectric plant as claimed in claim 6, wherein: The limiting protection assembly (4) includes a protective cover (401) fixedly connected to the side wall of the base housing (101). The gear (202) and rack (203) are both located inside the protective cover (401). A rack groove (40101) is provided inside the protective cover (401), and the rack (203) is slidably connected inside the rack groove (40101).

9. The non-powered anchoring device for automatic anchoring of a gantry crane in a hydropower station as described in claim 8, characterized in that: The protective cover (401) has a rocker arm movable groove (40102) vertically opened on its side wall. The rocker arm (208) is located in the rocker arm movable groove (40102). An upper limit block (403) and a lower limit block (404) are fixedly installed at the top and bottom of the rocker arm movable groove (40102), respectively.

10. A passive anchoring device for automatic anchoring of portal crane in a hydroelectric plant as claimed in claim 8, wherein: A locking pin (402) is horizontally slidably connected to the rocker arm connector (207). Anchoring locking holes (40201) and unlocking locking holes (40202) are respectively opened on the top and bottom of the side wall of the protective cover (401). When the rocker arm (208) is rotated to the top, the locking pin (402) is directly opposite the anchoring locking hole (40201). When the rocker arm (208) is rotated to the bottom, the locking pin (402) is directly opposite the unlocking locking hole (40202).

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