Single-beam portal crane

Abstract

The invention discloses a single-beam portal crane, and relates to the technical field of cranes, the single-beam portal crane comprises a cross beam, two supporting legs are arranged at the lower end of the cross beam, sliding plates are arranged on the two sides of the cross beam, two rolling wheels are arranged on one side of the inner wall of each sliding plate, and a groove body for the rolling wheels to slide is formed in the cross beam; a control box for driving the sliding plate to move transversely is arranged at the upper end of the cross beam, a first shaft is arranged on the inner wall of the roller, penetrates through the sliding plate and rotates relative to the sliding plate, a first correction plate is arranged on one side of the roller, and a second correction plate is arranged on the other side of the roller. A tidying unit for synchronously pushing the first correcting plate and the second correcting plate to move to be attached to the inner wall of the groove body is arranged between the sliding plate and the cross beam, in the equipment, in the process of carrying and moving heavy objects, the rolling tracks of the rolling wheels are always kept in a constraint state, the possibility of rail gnawing is easily reduced, and the use safety of the crane is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and particularly to a single-girder gantry crane. Background Art

[0002] A single-girder gantry crane is a common lifting device, mainly composed of a boom, a driving device, a control system, etc. Its main function is to move goods from one place to another, or to carry out short-distance transportation between two places, and it has a wide range of applications in various industrial fields.

[0003] During the actual use of the crane, since the distance between the sliding trolley under the top beam of the crane and the ground goods is large, and they are all connected by steel wires, during long-term use, the steel wire will swing left and right during the movement of the lifted goods, and then the phenomenon of rail gnawing will occur. Rail gnawing refers to the phenomenon that when the sliding trolley of the gantry crane is running, the wheel flange severely squeezes against the side of the track, generating a lateral thrust, and causing friction and wear between the wheel flange and the track. This phenomenon may cause damage to the track, making the track surface pitted, and then generating abnormal noises and strong vibrations, increasing the maintenance cost and being unfavorable to the personal safety of the staff.

[0004] Therefore, the present invention proposes a single-girder gantry crane. Summary of the Invention

[0005] The purpose of the present invention is to provide a single-girder gantry crane to solve the problems raised in the above background art. To achieve the above purpose, the present invention provides the following technical solution: A single-girder gantry crane includes a cross beam. Two legs are provided at the lower end of the cross beam. Sliding plates are provided on both sides of the cross beam. Two rollers are provided on one side of the inner wall of the sliding plate. A groove body for the rollers to slide is provided inside the cross beam. A control box for driving the sliding plate to move horizontally is provided at the upper end of the cross beam. A shaft body one is provided inside the roller. The shaft body one passes through the sliding plate and rotates relative to it. A correction plate one is provided on one side of the roller, and a correction plate two is provided on the other side of the roller. A regularizing unit for synchronously pushing the correction plate one and the correction plate two to displace and fit against the inner wall of the groove body is provided between the sliding plate and the cross beam; An oil storage box is provided between the upper ends of the correction plate one and the correction plate two and the cross beam. A baffle is provided at the port position of the oil storage box. A lubricating unit for driving the oil storage box to drain oil into the groove body is provided on one side of the sliding plate. The regularizing unit and the lubricating unit cooperate with each other to immerse the outer wall of the roller with oil during the movement of the roller along with the sliding plate; A magnetic adsorption part is provided on the lower bottom surface of the oil storage box. The magnetic adsorption part cooperates with the regularizing unit to adsorb and collect metal debris on the outer wall of the roller.

[0006] Preferably, the regularization unit includes a moving block located on one side of the calibration plate one. The moving block passes through the sliding plate and slides relative to it. On one side of the calibration plate two, there is a connecting rod passing through the sliding plate. There is a notch inside the connecting rod. Above the connecting rod, there is a blocking block. The blocking block includes an inclined surface part and a straight part. At the upper end of the blocking block, there is a connecting column. At the end of the connecting column, there is a connecting frame one. At the bottom end of the connecting frame one, there is a connecting frame two. Inside the inner wall of the connecting frame two, there is a sliding rod. At the lower end of the sliding rod, there is a hook. On the outer wall of the sliding rod, there is a fixing block. Inside the fixing block two, there are two shaft bodies two. The shaft bodies two pass through the sliding plate and are fixedly connected to it.

[0007] Preferably, the lubrication unit includes a shaft body three located inside the oil storage box. The shaft body three passes through the sliding plate and the control box and is rotatably connected to both. On the outer wall of the shaft body three, there is a transmission disc. The transmission disc is driven by a belt with the shaft body one. On the outer wall of the shaft body three, there is also a fan blade. When the fan blade is in a rotating state, it pushes the oil body inside the oil storage box towards the end of the oil storage box. At the bottom end of the baffle, there is a connecting strip. The end of the connecting strip is fixedly connected to the connecting frame one.

[0008] Preferably, the magnetic attraction part includes an arc-shaped magnetic strip located on one side of the calibration plate two. The lower end of the arc-shaped magnetic strip has magnetism for attracting metal objects. Inside the calibration plate two, there is a convex block. On one side of the convex block, there is a connecting plate and it is fixedly connected to the connecting plate. The upper end of the connecting plate is fixedly connected to the oil storage box. The inner wall diameter of the arc-shaped magnetic strip is larger than the outer wall diameter of the roller. The center of the arc surface of the arc-shaped magnetic strip is aligned with the center of the roller.

[0009] Preferably, a collection box is provided below the convex block. The upper top surface of the collection box is fixedly connected to the connecting plate.

[0010] Preferably, a plurality of first springs are provided between the calibration plate one and the calibration plate two. In a normal state, the elastic force of the first springs pushes the calibration plate one to fit against the inner wall of the sliding plate, and pushes the calibration plate two to fit against the inner wall of the connecting plate.

[0011] Preferably, a second spring is provided between the fixing block and the sliding rod. When the hook does not lift a heavy object, the elastic force of the second spring drives the connecting frame one to drive the bottom surface of the blocking block to fit against the upper surface of the connecting rod.

[0012] Preferably, the baffle includes an inclined groove part and a vertical part. The vertical part blocks the end of the oil storage box on one side. The central cross-section of the inclined groove part coincides with the central cross-section of the groove body.

[0013] Preferably, a plurality of pressure sensors are provided on one side of the sliding plate. The pressure sensors are located above the tank body, and the inner side walls of the pressure sensors coincide with the inner walls of the tank body. A receiving box is provided above the control box, and the receiving box is electrically connected to the pressure sensors.

[0014] The present invention has at least the following beneficial effects: 1. In the present invention, the gravity of the goods will drive the sliding rod to descend, and then drive the connecting frame one to descend at the same time. Subsequently, the inclined surface of the blocking block will simultaneously block the outer wall of the moving block and the inner wall of the notch of the connecting rod. Then, the connecting rod and the moving block will drive the correction plate two and the correction plate one to approach each other respectively until the bottom end of the blocking block contacts the bottom surface of the connecting rod and stops. In this state, the inner walls of the correction plate one and the correction plate two are on the same plane as the inner wall of the tank body. Therefore, during the subsequent handling and moving process, the rolling track of the roller is always kept in a constrained state, which is beneficial to reducing the possibility of rail biting and improving the use safety of the crane.

[0015] 2. In the present invention, during the process of the sliding plate driving the roller to move, the shaft one will drive the shaft three to rotate through the belt, and then drive the fan blade to push the oil body to move to the port part of the oil storage box. The descending connecting frame one will drive the baffle to descend synchronously, so that the baffle loses the shielding of the end part of the oil storage box, and the oil body flows out from the inclined groove part of the baffle to the center of the tank body, so that the area where the roller pre-passes in the tank body is immersed in the oil body, ensuring that the roller has good lubrication performance during the sliding process, cooperating with the rectifying effect of the rectifying unit, and making the moving process smoother and quieter.

[0016] 3. In the present invention, when the correction plate two is displaced to coincide with the inner wall of the tank body, the arc-shaped magnetic strip will cover the upper surface of the roller. During the continuous rolling of the roller, when the metal debris passes under the arc-shaped magnetic strip along the outer wall of the roller, it will be adsorbed by the magnetic force of the arc-shaped magnetic strip, thereby reducing the wear of the roller surface by metal objects, making it smoother during the goods handling process and reducing the possibility of rail biting. At the same time, when no heavy object is hung, the elastic force of the spring one will restore the positions of the correction plate one and the correction plate two. Therefore, the metal chips adsorbed on the bottom surface of the arc-shaped magnetic strip will be pushed by the upper surface of the convex block and then fall into the collection box directly below, facilitating the maintenance personnel to replace and repair the components of the crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the components around the sliding plate of the present invention; Figure 3 is a cross-sectional view of the beam structure of the present invention from another angle; Figure 4 is a cross-sectional view of the rectifying unit structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the structure of area A in the present invention; Figure 6 Cross-sectional view of the lubrication unit structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure of area B in the present invention; Figure 8 Schematic diagram of the magnetic attraction part structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of the structure of area C in the present invention.

[0018] In the figure: 1 - cross beam; 2 - leg; 3 - sliding plate; 4 - roller; 5 - trough body; 6 - control box; 7 - shaft one; 8 - calibration plate one; 9 - calibration plate two; 10 - regularization unit; 1001 - moving block; 1002 - connecting rod; 1003 - notch; 1004 - resisting block; 1005 - inclined surface part; 1006 - flat part; 1007 - connecting column; 1008 - connecting frame one; 1009 - connecting frame two; 10010 - slide bar; 10011 - hook; 10012 - fixing block; 10013 - shaft two; 11 - oil storage box; 12 - baffle; 1201 - inclined groove part; 1202 - vertical part; 13 - lubrication unit; 1301 - shaft three; 1302 - transmission disk; 1303 - fan blade; 1304 - connecting strip; 14 - magnetic attraction part; 1401 - arc-shaped magnetic strip; 1402 - convex block; 1403 - connecting plate; 15 - collection box; 16 - spring one; 17 - spring two; 18 - pressure sensor; 19 - receiving box. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-9 , the present invention provides a technical solution: a single-girder gantry crane, including: Embodiment 1, The crossbeam 1 is provided with two legs 2 at its lower end. The tops of the two legs 2 are fixedly connected to the crossbeam 1. Sliding plates 3 are provided on both sides of the crossbeam 1. Both sliding plates 3 can freely slide in the transverse direction of the crossbeam 1. On one side of the inner wall of the sliding plate 3, two rollers 4 are provided. Inside the crossbeam 1, there is a groove body 5 for the rollers 4 to slide. At the upper end of the crossbeam 1, there is a control box 6 for driving the transverse movement of the sliding plate 3. The bottom of the control box 6 is fixedly connected to the two sliding plates 3. The control box 6 drives the sliding plate 3 and the rollers 4 to move left and right on the crossbeam 1 through a program. The above is the prior art, so it will not be elaborated further.

[0021] In this solution, a shaft body one 7 is provided inside the roller 4 and fixedly connected thereto. The shaft body one 7 passes through the sliding plate 3 and rotates relative to it. On one side of the roller 4, there is a calibration plate one 8, and on the other side of the roller 4, there is a calibration plate two 9. Between the calibration plate one 8 and the calibration plate two 9, there are a plurality of spring one 16. The two ends of the spring one 16 are respectively fixedly connected to the calibration plate one 8 and the calibration plate two 9. Between the sliding plate 3 and the crossbeam 1, there is a regularizing unit 10 for synchronously pushing the calibration plate one 8 and the calibration plate two 9 to displace and fit with the inner wall of the groove body 5. Through the regularizing unit 10, when the crane lifts a heavy object and moves, it drives the calibration plate one 8 and the calibration plate two 9 to automatically fit with the inner wall of the groove body 5, thereby adaptively regularizing the rolling track of the roller 4 and reducing the possibility of rail gnawing. Between the upper ends of the calibration plate one 8 and the calibration plate two 9 and the crossbeam 1, there is an oil storage box 11. One side of the oil storage box 11 is fixedly connected to the inner wall of the sliding plate 3. At the port position of the oil storage box 11, there is a baffle 12 and they are in contact with each other. On one side of the sliding plate 3, there is a lubricating unit 13 for driving the oil storage box 11 to drain oil into the groove body 5. The regularizing unit 10 and the lubricating unit 13 cooperate with each other. During the process of the roller 4 moving with the sliding plate 3, the outer wall of the roller 4 is immersed in oil, thereby increasing the lubricity between the roller 4 and the groove body 5 and reducing the possible jamming phenomenon during the transportation of goods.

[0022] Further, the rectifying unit 10 includes a moving block 1001 located on one side of the first calibration plate 8. The moving block 1001 passes through the sliding plate 3 and slides relative to it. One end of the moving block 1001 is fixedly connected to the first calibration plate 8. A connecting rod 1002 passing through the sliding plate 3 is provided on one side of the second calibration plate 9 and fixedly connected to it. The connecting rod 1002 slides relative to the sliding plate 3. A notch 1003 is provided inside the connecting rod 1002. A blocking block 1004 is provided above the connecting rod 1002. The blocking block 1004 can enter the inside of the connecting rod 1002 through the notch 1003. The blocking block 1004 includes an inclined surface portion 1005 and a straight portion 1006. The middle area of the inclined surface portion 1005 is in contact with the outer wall of the moving block 1001, and the bottom end of the inclined surface portion 1005 is in contact with the inner wall of the notch 1003. A connecting column 1007 is provided at the upper end of the blocking block 1004 and fixedly connected to it. The connecting column 1007 is slidably connected to the control box 6 up and down through a fixing frame. A first connecting frame 1008 is provided at the end of the connecting column 1007 and fixedly connected to it. A second connecting frame 1009 is provided at the bottom end of the first connecting frame 1008 and fixedly connected to it. A sliding rod 10010 is provided inside the inner wall of the second connecting frame 1009 and fixedly connected to it. A hook 10011 is provided at the lower end of the sliding rod 10010 and fixedly connected to it. A fixing block 10012 is slidably connected to the outer wall of the sliding rod 10010. Two second shaft bodies 10013 are provided inside the fixing block 10012 and both are fixedly connected to it. The second shaft bodies 10013 pass through the sliding plate 3 and are fixedly connected to it. A second spring 17 is provided between the fixing block 10012 and the sliding rod 10010. The two ends of the second spring 17 are respectively fixedly connected to the fixing block 10012 and the sliding rod 10010. In the state where the hook 10011 does not lift a heavy object, the elastic force of the second spring 17 drives the first connecting frame 1008 to drive the bottom surface of the blocking block 1004 to fit with the upper surface of the connecting rod 1002; During the process of the blocking block 1004 descending along with the first connecting frame 1008 and the second connecting frame 1009, its inclined surface portion 1005 will simultaneously produce a blocking effect with the moving block 1001 and the inner wall of the notch 1003 of the connecting rod 1002, thereby pushing the first calibration plate 8 and the second calibration plate 9 to approach each other simultaneously until both are in contact with the inner wall of the groove body 5, adaptively constraining the moving trajectory during the rolling of the roller 4, and reducing the occurrence of rail gnawing.

[0023] The lubricating unit 13 includes a third shaft body 1301 located inside the oil storage box 11. The third shaft body 1301 is rotatably connected to the oil storage box 11. The third shaft body 1301 passes through the sliding plate 3 and the control box 6 and is rotatably connected to both. A transmission disk 1302 is provided on the outer wall of the third shaft body 1301 and is fixedly connected thereto. The transmission disk 1302 is driven by a belt with the first shaft body 7. A fan blade 1303 is also provided on the outer wall of the third shaft body 1301 and is fixedly connected thereto. When the fan blade 1303 is in a rotating state, it pushes the oil body inside the oil storage box 11 towards the end of the oil storage box 11. A connecting strip 1304 is provided at the bottom end of the baffle 12 and is fixedly connected thereto. The end of the connecting strip 1304 is fixedly connected to the first connecting frame 1008. The baffle 12 includes an inclined groove portion 1201 and a vertical portion 1202. One side of the vertical portion 1202 shields the port portion of the oil storage box 11. The central cross-section of the inclined groove portion 1201 coincides with the central cross-section of the groove body 5. Due to the special arc-shaped channel of the inclined groove portion 1201, the oil body flowing out of the oil storage box 11 will automatically enter the arc-shaped channel and flow into the inside of the groove body 5 along the established flow track, so that the outer wall of the roller 4 accurately contacts the oil surface, ensuring good lubrication effect between the roller 4 and the groove body 5.

[0024] During use, after the staff hangs a heavy object below the hook 10011, the gravity of the goods will drive the sliding rod 10010 to descend inside the fixed block 10012, thereby driving the first connecting frame 1008 and the second connecting frame 1009 to descend simultaneously, and then driving the inclined surface 1005 of the resisting block 1004 to resist against the outer wall of the moving block 1001 and the inner wall of the notch 1003 of the connecting rod 1002 at the same time. Under the continuous resisting action, the connecting rod 1002 and the moving block 1001 will respectively drive the second correcting plate 9 and the first correcting plate 8 to approach each other between the cross beam 1 and the sliding plate 3 until the bottom end of the resisting block 1004 contacts the bottom surface of the connecting rod 1002 and stops. In this state, the inner walls of the first correcting plate 8 and the second correcting plate 9 are on the same plane as the inner wall of the groove body 5. Then, during the subsequent handling and moving process, the first correcting plate 8 and the second correcting plate 9 always remain in this position, always keeping the rolling track of the roller 4 in a constrained state, which is beneficial to reducing the possibility of rail gnawing and improving the use safety of the crane. In addition, during the process of the sliding plate 3 driving the roller 4 to move left and right on the cross beam 1, the roller 4 will drive the first shaft body 7 to rotate. Furthermore, the first shaft body 7 will drive the third shaft body 1301 to rotate inside the oil storage box 11 through a belt. Then, it will drive the fan blade 1303 to rotate and push the oil body inside the oil storage box 11, so that the oil body moves to the port part of the oil storage box 11. At the same time, the descending first connecting frame 1008 will drive the connecting bar 1304 and the baffle 12 to descend synchronously, causing the baffle 12 to lose the shielding of the end part of the oil storage box 11, allowing the oil body to flow out from the inclined groove part 1201 of the baffle 12 towards the center of the groove body 5. Thus, the area where the roller 4 in the groove body 5 is about to pass through is immersed in the oil body, ensuring that the roller 4 has good lubrication performance during the sliding process, cooperating with the shaping effect of the shaping unit 10, and making the moving process smoother and quieter.

[0025] According to the above embodiment, Embodiment 2, The lower bottom surface of the oil storage box 11 is provided with a magnetic attraction part 14. The magnetic attraction part 14 cooperates with the shaping unit 10 to adsorb and collect metal debris on the outer wall of the roller 4. The magnetic attraction part 14 includes arc-shaped magnetic strips 1401 located on one side of the second calibration plate 9. There are two arc-shaped magnetic strips 1401 in total. One side of each arc-shaped magnetic strip 1401 is fixedly connected to the second calibration plate 9. The lower end of the arc-shaped magnetic strip 1401 has magnetism for adsorbing metal objects. Inside the second calibration plate 9, there are convex blocks 1402 and they slide relative to each other. There are two convex blocks 1402 respectively located directly below the arc-shaped magnetic strips 1401. One side of the convex block 1402 is provided with a connecting plate 1403 and they are fixedly connected. The upper end of the connecting plate 1403 is fixedly connected to the oil storage box 11. The inner wall diameter of the arc-shaped magnetic strip 1401 is larger than the outer wall diameter of the roller 4. The arc center of the arc surface of the arc-shaped magnetic strip 1401 is aligned with the center of the roller 4. Below the convex block 1402, there is a collection box 15. The upper top surface of the collection box 15 is fixedly connected to the connecting plate 1403; When the second calibration plate 9 is displaced to coincide with the inner wall of the groove body 5, the arc-shaped magnetic strip 1401 will cover the upper surface of the roller 4 and leave a certain gap. During the continuous rolling of the roller 4, small metal debris in the groove body 5 may adhere to the outer wall of the roller 4. When this debris passes directly below the arc-shaped magnetic strip 1401 along the outer wall of the roller 4, the debris will be adsorbed by the magnetic force of the arc-shaped magnetic strip 1401. Thus, the wear of the metal objects on the surface of the roller 4 can be reduced, making it smoother during the cargo handling process and reducing the possibility of rail gnawing. At the same time, when no heavy object is hung, the elastic force of the first spring 16 restores the positions of the first calibration plate 8 and the second calibration plate 9. Therefore, the metal chips adsorbed on the lower bottom surface of the arc-shaped magnetic strip 1401 will be pushed by the upper surface of the convex block 1402 and then fall into the collection box 15 directly below, facilitating the magnetic attraction effect during the secondary use of the crane and also facilitating the maintenance personnel to replace and repair the components of the crane.

[0026] According to the above embodiments, Embodiment 3, A plurality of pressure sensors 18 are provided on one side of the sliding plate 3. There are two pressure sensors 18, which are respectively located on the left and right sides of the sliding plate 3 and fixedly connected thereto. The pressure sensors 18 are located above the tank body 5, and the inner side wall of the pressure sensor 18 coincides with the inner wall of the tank body 5. A receiving box 19 is provided above the control box 6 and electrically connected thereto. The receiving box 19 is electrically connected to the pressure sensor 18; when the rolling track of the roller 4 has a large deviation, the side wall of the roller 4 will resist against the pressure sensor 18, and then a signal will be sent to the receiving box 19, and the receiving box 19 will transmit an alarm signal to the ground communication device to timely remind the maintenance personnel to repair the off-track phenomenon, thereby improving the safety of the crane during use.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-beam gantry crane, comprising a crossbeam (1), wherein the lower end of the crossbeam (1) is provided with two legs (2), both sides of the crossbeam (1) are provided with sliding plates (3), one side of the inner wall of the sliding plate (3) is provided with two rollers (4), the interior of the crossbeam (1) is provided with a trough (5) for the rollers (4) to slide, and the upper end of the crossbeam (1) is provided with a control box (6) for driving the sliding plate (3) to move horizontally, Features: An inner wall of the roller (4) is provided with an axle body 1 (7), the axle body 1 (7) passes through the sliding plate (3) and rotates relative to the sliding plate (3), a correction plate 1 (8) is provided on one side of the roller (4), and a correction plate 2 (9) is provided on the other side of the roller (4), and a regular unit (10) is provided between the sliding plate (3) and the crossbeam (1) for synchronously pushing the correction plate 1 (8) and the correction plate 2 (9) to move to fit the inner wall of the trough body (5); An oil storage box (11) is provided between the upper ends of the correction plate 1 (8) and the correction plate 2 (9) and the crossbeam (1), a baffle (12) is provided at the port position of the oil storage box (11), a lubrication unit (13) is provided on one side of the sliding plate (3) for driving the oil storage box (11) to discharge oil into the groove body (5), and the regularization unit (10) and the lubrication unit (13) cooperate with each other to immerse the outer wall of the roller (4) in oil when the roller (4) moves with the sliding plate (3); The lower bottom surface of the oil storage box (11) is provided with a magnetic attraction portion (14), and the magnetic attraction portion (14) cooperates with the regularization unit (10) to absorb and collect metal debris on the outer wall of the roller (4).

2. The single-beam gantry crane according to claim 1, characterized in that: The aligning unit (10) comprises a moving block (1001) located on one side of the correction plate (8), the moving block (1001) passing through the sliding plate (3) and sliding relative thereto, a connecting rod (1002) passing through the sliding plate (3) is provided on one side of the correction plate (9), a notch (1003) is provided inside the connecting rod (1002), a stop block (1004) is provided above the connecting rod (1002), the stop block (1004) comprises an inclined portion (1005) and a straight portion (1006), and a connecting column (1004) is provided at the upper end of the stop block (1004) 1007), a connecting frame 1 (1008) is provided at the end of the connecting column (1007), a connecting frame 2 (1009) is provided at the bottom end of the connecting frame 1 (1008), a sliding rod (10010) is provided on the inner wall of the connecting frame 2 (1009), a hook (10011) is provided at the lower end of the sliding rod (10010), a fixing block (10012) is provided on the outer wall of the sliding rod (10010), two shaft bodies 2 (10013) are provided inside the fixing block (10012), and the shaft bodies 2 (10013) pass through the sliding plate (3) and are fixedly connected thereto.

3. The single-beam gantry crane according to claim 2, characterized in that: The lubrication unit (13) comprises a shaft body (1301) located inside the oil storage box (11), the shaft body (1301) passes through the sliding plate (3) and the control box (6) and is rotatably connected to both of them, the outer wall of the shaft body (1301) is provided with a transmission disc (1302), the transmission disc (1302) and the shaft body (7) are driven by a belt, the outer wall of the shaft body (1301) is also provided with a fan blade (1303), the fan blade (1303) pushes the oil inside the oil storage box (11) to move toward the end of the oil storage box (11) in a rotating state, and the bottom end of the baffle (12) is provided with a connecting strip (1304), and the end of the connecting strip (1304) is fixedly connected to the connecting frame (1008).

4. The single-beam gantry crane according to claim 3, characterized in that: The magnetic attraction portion (14) comprises an arc-shaped magnetic strip (1401) located on one side of the second correction plate (9); the lower end of the arc-shaped magnetic strip (1401) has magnetic properties for attracting metal objects; a protrusion (1402) is provided inside the second correction plate (9); a connecting plate (1403) is provided on one side of the protrusion (1402) and is fixedly connected thereto; the upper end of the connecting plate (1403) is fixedly connected to the oil storage box (11); the inner wall diameter of the arc-shaped magnetic strip (1401) is greater than the outer wall diameter of the roller (4); and the arc center of the arc-shaped magnetic strip (1401) is aligned with the center of the roller (4).

5. The single-beam gantry crane according to claim 4, characterized in that: A collection box (15) is provided below the protrusion (1402), and the upper top surface of the collection box (15) is fixedly connected to the connection plate (1403).

6. The single-beam gantry crane according to claim 4, characterized in that: A plurality of springs (16) are provided between the correction plate one (8) and the correction plate two (9). Under normal conditions, the elastic force of the springs (16) pushes the correction plate one (8) to fit against the inner wall of the sliding plate (3), and pushes the correction plate two (9) to fit against the inner wall of the connecting plate (1403).

7. The single-beam gantry crane according to claim 2, characterized in that: A second spring (17) is provided between the fixed block (10012) and the sliding rod (10010). When the hook (10011) is not lifting a heavy object, the elastic force of the second spring (17) drives the first connecting frame (1008) to drive the bottom surface of the resisting block (1004) to fit the upper surface of the connecting rod (1002).

8. The single-beam gantry crane according to claim 3, characterized in that: The baffle (12) comprises an inclined groove portion (1201) and a vertical portion (1202), one side of the vertical portion (1202) shields the end of the oil storage box (11), and the central cross section of the inclined groove portion (1201) overlaps with the central cross section of the groove body (5).

9. The single-beam gantry crane according to claim 1, characterized in that: A plurality of pressure sensors (18) are provided on one side of the sliding plate (3), the pressure sensors (18) are located above the groove body (5), and the inner side wall of the pressure sensor (18) coincides with the inner wall of the groove body (5), and a receiving box (19) is provided above the control box (6), and the receiving box (19) is electrically connected to the pressure sensor (18).

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