Gantry crane and radiotherapy room

Abstract

The utility model aims at providing a gantry crane and a radiotherapy room, relates to the technical field of hoisting and hoisting, and aims at solving the problem that the hoisting height of an existing gantry crane is limited. The gantry crane comprises a first stand column, a second stand column, a cross beam, a hanging piece, a transmission assembly and a driving assembly, the cross beam is connected to the first stand column and the second stand column, the hanging piece is arranged between the first stand column and the second stand column, and the hanging piece is used for lifting a heavy object. The transmission assembly comprises a transmission chain, a first part of the transmission chain is connected with the hanging piece, the driving assembly is arranged on the side, away from the second stand column, of the first stand column, the driving assembly is connected with a second part of the transmission chain, and the driving assembly is used for pulling or releasing the transmission chain so that the hanging piece can move in the height direction of the gantry crane.

Description

Technical Field

[0001] This application relates to the field of lifting and hoisting technology, and more particularly to a gantry crane and a radiotherapy room. Background Technology

[0002] In related technologies, gantry cranes rely on electric or manual hoists to lift heavy objects, with the hoist being the key component for achieving the lifting function. However, due to structural or spatial layout factors, the hoist itself occupies space in the vertical direction within the overall height layout of the gantry crane, reducing the effective lifting height range. This significantly limits the actual lifting height that the gantry crane can reach, adversely affecting many work scenarios that require lifting heavy objects to higher positions. Utility Model Content

[0003] The purpose of this application is to provide a gantry crane and a radiotherapy room, which aims to solve the problem of limited lifting height of existing gantry cranes.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] In a first aspect, this application provides a gantry crane, which includes a first column, a second column, a crossbeam, a connecting member, a transmission assembly, and a drive assembly. The crossbeam is connected to the first column and the second column, and the connecting member is disposed between the first column and the second column. The connecting member is used to lift heavy objects.

[0006] The transmission assembly includes a transmission chain, the first part of which is connected to the hanger, and a drive assembly located on the side of the first column away from the second column. The drive assembly is connected to the second part of the transmission chain and is used to pull or release the transmission chain to move the hanger along the height direction of the gantry crane.

[0007] In this application, the space in which the drive assembly pulls the transmission chain is located on the side of the first column away from the second column. The drive assembly has a sufficient range of movement with available space, and the distance that the drive assembly can move the transmission chain is not limited by the internal hoisting space formed by the first column, the second column, and the crossbeam.

[0008] Understandably, if the drive assembly is placed in the internal space enclosed between the crossbeam and the first and second columns, the height or layout of the drive assembly itself will limit the lifting height of the hook. However, if the drive assembly is located on the side of the first column away from the second column, its height will not create additional obstacles to the maximum lifting height of the hook, which is conducive to increasing the overall lifting stroke of the gantry crane, enabling heavy objects to be lifted to higher positions, and expanding the functions and applicable scenarios of the gantry crane.

[0009] In some embodiments, the gantry crane further includes a transverse trolley slidably connected to the crossbeam and connected to the transmission assembly. The transverse trolley is adapted to slide along the extension direction of the crossbeam to drive the transmission assembly and the hanger to move.

[0010] In some embodiments, the transmission assembly further includes a first transmission guide connected to the traverse trolley, and the transmission chain further includes a third portion connected between the first portion and the second portion, the third portion being wound around the first transmission guide, and the first transmission guide being adapted to drive the traverse trolley to move.

[0011] In some embodiments, the gantry crane further includes a lateral locking structure connected to the lateral trolley and adapted to lock the lateral trolley on the crossbeam so that the lateral trolley cannot slide along the crossbeam.

[0012] In some embodiments, the crossbeam has at least one adjusting hole, and the traverse trolley has at least one positioning hole. During the sliding of the traverse trolley along the crossbeam, a positioning hole can selectively be opposite to any one of the at least one adjusting holes. The lateral locking structure includes a fixing member that can be slidably inserted through the positioning hole and the adjusting hole opposite to the positioning hole.

[0013] In some embodiments, the gantry crane further includes a first limiting member connected to the transverse trolley, the first limiting member being adapted to engage with the drive chain so that the drive chain cannot be released or pulled out.

[0014] In some embodiments, the transmission chain includes multiple through holes, and the first limiting member includes a sleeve and a buckle. The sleeve is sleeved on the outer periphery of the transmission chain and connected to the transverse trolley. The sleeve has at least one through hole, which can selectively face any one of the through holes. The buckle is slidably inserted through the through hole and the through hole opposite to the through hole. The buckle is adapted to lock the position of the transmission chain relative to the sleeve so that the transmission chain cannot be pulled out or released.

[0015] In some embodiments, the second part includes a first sub-part, a second sub-part, and a third sub-part connected in sequence. The third sub-part is connected to the first part. The transmission assembly also includes a second transmission guide and a third transmission guide. The second transmission guide is disposed on the crossbeam and located above the drive assembly. The second sub-part is wound around the second transmission guide, and the third sub-part is wound around the third transmission guide. The third transmission guide is connected to the drive assembly.

[0016] In some embodiments, the drive assembly includes a first drive chain, a drive member, a second drive chain, and a first positioning block. The first drive chain is adapted to be connected to a first sub-part of a second part of a transmission chain. The drive member is connected to the first drive chain and is used to pull or release the first drive chain. The drive member is connected to the second drive chain, and the second drive chain is fixedly connected to a first column. The first positioning block is located on the side of the first column facing the drive assembly, and the end of the transmission chain away from the hook is fixedly connected to the first positioning block.

[0017] Secondly, this application provides a radiotherapy room, which includes the aforementioned gantry crane, and the gantry crane is installed in the radiotherapy clinic.

[0018] The technical effects of any of the embodiments in the second aspect above can be found in the technical effects of the corresponding embodiments in the first aspect, and will not be repeated here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A front view of a gantry crane provided in an embodiment of this application;

[0021] Figure 2 This is one of the structural schematic diagrams of a gantry crane provided in the embodiments of this application;

[0022] Figure 3 This is a second structural schematic diagram of a gantry crane provided in an embodiment of this application;

[0023] Figure 4 Provided for the embodiments of this application Figure 2 A partial schematic diagram of the lateral moving vehicle from the perspective of center A;

[0024] Figure 5 Provided for the embodiments of this application Figure 2 A magnified view of the connection between the middle sleeve and the transverse trolley;

[0025] Figure 6 This is a schematic diagram illustrating the fit between the sleeve and the latch provided in an embodiment of this application. Attached image description:

[0027] 100. Crossbeam; 101. Slide rail; 102. Adjustment hole;

[0028] 200. First pillar;

[0029] 300. Second pillar;

[0030] 400. Hook and connector;

[0031] 500. Transmission assembly; 501. Transmission chain; 5011. First part; 5012. Second part; 5012a. First sub-part; 5012b. Second sub-part; 5012c. Third sub-part; 5013. Third part; 5014. Through hole; 502. First transmission guide; 503. Sleeve; 5031. Perforation; 504. Second transmission guide; 505. Third transmission guide; 506. Lock;

[0032] 600. Drive assembly; 601. First drive chain; 602. Second drive chain; 603. Drive component; 604. First positioning block; 605. Second positioning block;

[0033] 700. Lateral trolley; 701. First constraint; 702. Second constraint; 703. Third constraint; 7031. Restriction hole; 704. Positioning hole; 705. Fixing component. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0036] The terms "first" and "second," etc., used in the specification and drawings of this application are used to distinguish different objects or to distinguish different treatments of the same object, rather than to describe a specific order of objects.

[0037] Furthermore, the terms "comprising" and "having," and any variations thereof, used in the description of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0038] It should be noted that in the embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0039] In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0040] In some embodiments, see Figure 1 This application provides a gantry crane, which includes a crossbeam 100, a first column 200, a second column 300, a connecting member 400, a transmission assembly 500, and a drive assembly 600; wherein, the crossbeam 100 is connected to the first column 200 and the second column 300, and it is understood that the first column 200 and the second column 300 support the crossbeam 100; the connecting member 400 is disposed between the first column 200 and the second column 300 for lifting heavy objects; combined with Figure 2 As shown, the transmission assembly 500 includes a transmission chain 501, and a first portion 5011 of the transmission chain 501 (as shown in the figure). Figure 3 (As shown) is connected to the hook 400 for lifting heavy objects; the drive assembly 600 is located on the side of the first column 200 away from the second column 300, and is connected to the second part 5012 of the transmission chain 501, for pulling or releasing the transmission chain 501 to move the hook 400 along the height direction of the gantry crane.

[0041] In some embodiments, the drive assembly 600 can be a manual hoist. An operator pulling the manual hoist can pull the drive chain 501, and releasing the manual hoist can release the drive chain 501.

[0042] In other embodiments, the drive assembly 600 may be an electric hoist. An operator can pull or release the drive chain 501 by controlling the electric hoist.

[0043] The gantry crane in this application has its drive assembly 600 located on the side of the first column 200 away from the second column 300. The movement of the drive assembly 600 in the horizontal direction (i.e., the extension direction of the beam) and the vertical direction (the direction of the column) is not affected by the limited space enclosed by the beam 100, the first column 200, and the second column 300. This allows for an increase in the lifting stroke of the load within the limited space. When the operator manipulates the drive assembly 600, they can adjust the hoist position in the plane according to the actual lifting requirements, giving the load greater adjustment range within the limited space, especially in the lifting direction, ensuring a precise and smooth lifting process.

[0044] Of course, the drive component 600 in this application may also be located on the side of the second column 300 away from the first column 200. This application does not limit this. For ease of explanation, this application uses the example of the drive component 600 being located on the side of the first column 200 away from the second column 300.

[0045] In some embodiments, see Figure 1 and combined Figure 2 This application also includes a transverse trolley 700, which is slidably connected to the crossbeam 100 and connected to the transmission assembly 500. The transverse trolley 700 is adapted to slide along the extension direction of the crossbeam 100. In other words, the transverse trolley 700 can slide on the crossbeam 100 in the horizontal direction. Thus, the transverse trolley 700 can drive the transmission assembly 500 and the hook 400 to move.

[0046] For example, a portion of the transmission chain 501 located between the hook 400 and the transmission assembly 500 is wound around the transverse trolley 700. The transmission chain 501 can change direction at the transverse trolley 700. In this way, the transverse trolley 700 can drive the transmission chain 501 wound around the transverse trolley 700 to move in the horizontal direction, and drive the hook 400 connected to the transmission chain 501 to move the lifted load in the vertical direction.

[0047] In some embodiments, see Figure 3 The transmission assembly 500 also includes a first transmission guide 502, which is connected to the transverse trolley 700 and is connected above the hook 400.

[0048] Among them, see Figure 3 and combined Figure 4 The transmission chain 501 also includes a third part 5013, which is connected between the first part 5011 and the second part 5012. The third part 5013 is wound around the first transmission guide 502, which is adapted to drive the transverse trolley 700 to move.

[0049] For example, the first transmission guide 502 can be a fixed pulley, which is connected to the transverse trolley 700. The third part 5013 of the transmission chain 501 is wound around the fixed pulley. Thus, when the transmission chain 501 is pulled or released by the drive assembly 600, the third part 5013 of the transmission chain 501 can change direction at the fixed pulley to drive the hoisted load to move upward or downward in the height direction.

[0050] In some embodiments, see Figure 3The traverse trolley 700 includes a first constraint member 701, which is connected to the traverse trolley 700. The third part 5013 of the transmission chain 501 is located between the first transmission guide member 502 and the first constraint member 701. Under the action of the first constraint member 701, the third part 5013 of the transmission chain 501 can always maintain its winding relationship with the first transmission guide member 502, thus ensuring the stability of the transmission.

[0051] In some embodiments, the first constraint 701 may be a roller.

[0052] In some embodiments, see Figure 3 The traverse trolley 700 also includes a second constraint member 702, which is located between the fixed pulley and the drive assembly 600 and connected to the traverse trolley 700. The transmission chain 501 between the second part 5012 and the third part 5013 is slidably positioned above the second constraint member 702. The top of the second constraint member 702 is flush with the top of the fixed pulley in the height direction. The second constraint member 702 and the fixed pulley can support the transmission chain 501 to prevent it from swaying or sagging when it is under a large load. This also prevents the fixed pulley from shifting due to uneven force, thus ensuring that the transmission chain 501 always remains on a stable transmission path.

[0053] In some embodiments, the second constraint 702 may be a roller.

[0054] In some embodiments, see Figure 3 The traverse trolley 700 also includes a third constraint member 703, which is located between the second constraint member 702 and the drive assembly 600 or between the first transmission guide member 502 and the drive assembly 600. The third constraint member 703 is connected to the traverse trolley 700 and has a limiting hole 7031. The inner wall of the limiting hole 7031 can cooperate with the peripheral wall of the transmission chain 501 so that the transmission chain 501 can only slide within the limiting hole 7031 and cannot rotate, thereby improving the motion stability of the transmission chain 501.

[0055] In other embodiments, the bottom wall surface of the limiting hole 7031 along the height is flush with the top wall surface of the fixed pulley (first transmission guide 502) and the second constraint 702 to ensure that the transmission chain 501 can extend in the horizontal direction.

[0056] In some embodiments, see Figure 4 The crossbeam 100 is provided with a slide rail 101, and the transverse trolley 700 is slidably disposed on the slide rail 101. This application takes the extension direction of the slide rail 101 as the horizontal direction as an example for illustrative description.

[0057] For example, there are two slide rails 101, which are slidably connected to the left and right sides of the traverse trolley 700, respectively. For another example, the first constraint member 701 and the second constraint member 702 of the traverse trolley 700, such as rollers, can roll along the slide rail 101, thereby driving the third part 5013 of the transmission chain 501 around the first transmission guide member 502 to move horizontally, and driving the hook member 400 connected to the transmission chain 501 to move the lifted load vertically.

[0058] In some embodiments, this application further includes a lateral locking structure connected to the lateral trolley 700, which is adapted to lock the lateral trolley 700 on the crossbeam 100 so that the lateral trolley 700 cannot slide along the crossbeam 100.

[0059] Based on this, when it is necessary to adjust the height of the lifted load along the height direction, the lateral locking structure locks the lateral trolley 700, preventing the lateral trolley 700 from having a horizontal displacement deviation on the crossbeam 100 due to the reaction force generated when lifting the load or slight external disturbances, thereby ensuring that the lifted load can rise or fall smoothly along a precise height straight line trajectory.

[0060] In some embodiments, the lateral locking structure can be a friction plate locking structure. Specifically, corresponding friction plate sets are installed on the contact surfaces of the traverse carriage 700 and the crossbeam 100, with one side fixed to the carriage and the other side fixed to the crossbeam 100. During normal operation, the friction plate sets are in a separated or low-friction state, which does not affect the smooth sliding of the traverse carriage 700. When locking is required, pressure is applied using hydraulic, pneumatic, or electromechanical devices to make the two sets of friction plates fit tightly together, relying on friction to hinder the movement of the traverse carriage 700.

[0061] In some embodiments, see Figure 3 and combined Figure 5 In this application, the crossbeam 100 is provided with at least one adjustment hole 102, and the transverse trolley 700 is provided with at least one positioning hole 704. During the process of the transverse trolley 700 sliding along the slide rail 101, the positioning hole 704 can selectively be opposite to one of the adjustment holes 102. As the transverse trolley 700 moves in the horizontal direction, the positioning hole 704 of the transverse trolley 700 can cooperate with different adjustment holes 102, which means that the transverse trolley 700 can move flexibly in the horizontal direction to meet the lifting requirements.

[0062] It should be noted that the number of adjustment holes 102 can be one, two or more, and can be specifically set according to different target positions of the transverse trolley 700. This application does not limit this.

[0063] Correspondingly, there can be one, two or more positioning holes 704. One positioning hole 704 corresponds to one adjustment hole 102. The number of adjustment holes 102 is greater than or equal to the number of positioning holes 704.

[0064] In addition, see Figure 3 and combined Figure 5 The transverse locking structure includes a fixing member 705, which is slidably inserted through a positioning hole 704 and an adjustment hole 102 opposite to the positioning hole 704.

[0065] In this way, when the traverse trolley 700 moves to the target position, the positioning hole 704 is aligned with the adjustment hole 102 that matches the target position, and the fixing member 705 passes through the adjustment hole 102 and the positioning hole 704 in sequence, so that the traverse trolley 700 is locked on the crossbeam 100, and the traverse trolley 700 cannot move along the slide rail 101 on the crossbeam 100, so as to ensure the stability during the process of lifting heavy objects and moving them along the height.

[0066] In some embodiments, the gantry crane in this application further includes a first limiting member, which is connected to the transverse trolley 700 and is adapted to engage with the transmission chain 501 so that the transmission chain 501 cannot be released or pulled out.

[0067] When the aforementioned traverse trolley 700 can move horizontally on the slide rail 101, the purpose of this movement is to drive the hook 400 and the lifted load to move horizontally. Therefore, the transmission chain 501 is responsible for transmitting the pulling force generated by the drive assembly 600 to the traverse trolley 700 and the hook 400, so that the traverse trolley 700 moves and the hook 400 drives the traverse trolley 700 to move.

[0068] During this process, the first limiting member can limit the length change of the first part 5011 of the transmission chain 501 between the crossbeam 100 and the hanger 400, so that the lifted load will not move in height and the stability of the lifted load during horizontal movement is enhanced.

[0069] In some embodiments, the first limiting member can be an electromagnetic limiting system composed of an electromagnet and an armature. The electromagnet is fixed to the transverse trolley 700, while the armature is integrated into a movable clamping plate whose shape conforms to the side profile of the transmission chain 501. Under normal conditions, the electromagnet is de-energized, and the clamping plate is in a free state, not affecting the operation of the transmission chain 501. Once the gantry crane enters a critical operation phase or a shutdown maintenance period, the electromagnet is energized, instantly generating a strong magnetic force to attract the armature, causing the clamping plate to quickly approach and tightly adhere to the transmission chain 501, firmly locking the transmission chain 501 by magnetic attraction.

[0070] In other embodiments, see Figure 3 and combined Figure 6 The transmission chain 501 includes multiple chain links 5014. The first limiting member includes a sleeve 503, which is sleeved on the outer periphery of the transmission chain 501 and connected to the transverse trolley 700. The sleeve 503 is provided with at least one through hole 5031, which can selectively face any one of the chain links 5014.

[0071] For example, the through hole 5031 of the sleeve 503 includes a first through hole and a second through hole, the first through hole extending in the horizontal direction and the second through hole extending in the width direction of the crossbeam 100 (i.e., the direction perpendicular to the horizontal and height directions). Of course, the through hole 5031 of the sleeve 503 may also include a third or a fourth through hole, which is not limited in this application.

[0072] See Figure 3 and combined Figure 6 The first limiting member also includes a latch 506, which is slidably inserted into the through hole 5031 and the chain link 5014 opposite to the through hole 5031. The latch 506 is adapted to lock the position of the transmission chain 501 relative to the sleeve 503 so that the transmission chain 501 cannot be pulled out or released.

[0073] When the gantry crane enters a critical operation phase, such as moving the load to be lifted, to prevent the transmission chain 501 from accidentally loosening, the operator only needs to pass the locking buckle 506 through the through hole 5031 and the chain link 5014 along the preset path. When the locking buckle 506 passes through the through hole 5031 and the chain link 5014 in sequence, the through hole 5031 and the chain link 5014 are tightly engaged. The locking buckle 506 will act like a sturdy "lock". Utilizing its own weight and the frictional force of the tight contact between the inner walls of the through hole 5031 and the chain link 5014, as well as the geometric fit, it will lock the transmission chain 501 relative to the sleeve 503 from all directions at the mechanical structure level, thereby restricting the movement of the transmission chain 501 and preventing it from being pulled out or released.

[0074] Understandably, when the latch 506 locks the transmission chain 501, the load to be lifted has been hoisted to the target height. At this point, when it is necessary to adjust the horizontal position of the traverse trolley 700, the operator can move the fixing part 705 out so that the adjustment hole 102 and the positioning hole 704 can be unlocked, and the traverse trolley 700 can move horizontally on the slide rail 101. At the target height, if the operator does not lock the transmission chain 501 with the latch 506, the operator will not be able to move the fixing part 705 out due to the weight of the load itself. When the locking buckle 506 releases the transmission chain 501, the horizontal trolley 700 needs to be locked to the target horizontal position first. The operator inserts the fixing component 705 sequentially through the adjusting hole 102 and the positioning hole 704. The adjusting hole 102 and the positioning hole 704 are locked together and cannot move relative to each other, so that the horizontal trolley 700 is locked on the slide rail 101. At this time, the drive component 600 can pull or release the transmission chain 501 to drive the hanging component 400 to move up and down along the height. At the target horizontal position, if the operator inserts the fixing component 705 sequentially through the adjusting hole 102 and the positioning hole 704, the operator will not be able to remove the locking buckle 506 from the locked transmission chain 501 due to the weight of the load to be lifted. This interlocking structure design can improve the safety of the gantry crane during the lifting process.

[0075] In some embodiments, see Figure 3 The second part 5012 includes a first sub-part 5012a, a second sub-part 5012b and a third sub-part 5012c connected in sequence. The third sub-part 5012c is connected to the third part 5013. The transmission assembly 500 also includes a second transmission guide 504. The second transmission guide 504 is disposed on the crossbeam 100 and is located above the drive assembly 600. The second sub-part 5012b is wrapped around the second transmission guide 504.

[0076] Exemplarily, the second transmission guide 504 is disposed on the crossbeam 100 at the connection end between the first column 200 and the crossbeam 100. Of course, the second transmission guide 504 may also be disposed on the top of the crossbeam 100. This application provides an exemplary description with the second transmission guide 504 disposed on the crossbeam 100 at the connection end between the first column 200 and the crossbeam 100.

[0077] In some embodiments, the second transmission guide 504 can be a fixed pulley connected to the crossbeam 100. The fixed pulley itself can rotate flexibly, and the second sub-part 5012b can smoothly change direction by relying on the fixed pulley, just as a smooth "turning pivot" is set at the turning point of the track. The second sub-part 5012b is wound around the fixed pulley, and the second sub-part 5012b can smoothly change direction so that the transmission chain 501 can change between the vertical and horizontal directions.

[0078] Based on this, it is ensured that the transmission chain 501 will not experience jamming, twisting or other adverse phenomena due to sudden changes in direction, thus guaranteeing the continuity and stability of power transmission. This enables the gantry crane to complete tasks efficiently and accurately, whether it is vertically lifting heavy objects or horizontally moving and transporting them, thereby improving the overall operational efficiency and reliability of the equipment.

[0079] In some embodiments, see Figure 3 The transmission assembly 500 also includes a third transmission guide 505, and a second sub-part 5012b is wound around the third transmission guide 505. The third transmission guide 505 is connected to the drive assembly 600.

[0080] For example, the third transmission guide 505 is a movable pulley, which can change the direction of force during the lifting of heavy objects. When the gantry crane lifts a heavy object, the transmission chain 501 is connected to the movable pulley. As the movable pulley moves, the weight of the heavy object is distributed to the transmission chains 501 on both sides of the movable pulley, so that the operator only needs to apply a much smaller pulling force than directly lifting the heavy object to lift it, while reducing the time required for a single lifting operation.

[0081] Taking the third transmission guide 505 as a movable pulley as an example, when the operator pulls the third transmission guide 505 downwards along the height direction via the first drive chain 601, the length L1 of the third transmission guide 505 near the first column 200 in the horizontal direction increases. The downward distance of the third transmission guide 505 is L2, and L1 is twice L2. Correspondingly, the length of the first part 5011 in the entire transmission chain 501 decreases, and the length of the second part 5012 increases.

[0082] In some embodiments, see Figure 3 The drive assembly 600 includes a first drive chain 601 and a drive member 603. The first drive chain 601 is adapted to be connected to a first sub-part 5012a of the transmission chain 501. The drive member 603 is connected to the first drive chain 601 and is used to pull or release the first drive chain 601.

[0083] For example, the drive unit 603 is a manual hoist. The operator pulls the handle of the manual hoist (drive unit 603), causing the first drive chain 601 to move downward in the height direction. Due to the solid connection between the first drive chain 601 and the second part 5012 of the transmission chain 501, power is smoothly transmitted, thereby driving the transmission chain 501 to move, which in turn drives the hook 400 to lift the heavy object upward in the height direction.

[0084] Conversely, when the operator releases the handle of the manual hoist, it can drive the attachment 400 to place heavy objects downwards along the height direction.

[0085] In some embodiments, the drive assembly 600 includes a second drive chain 602, a drive member 603 is connected to the second drive chain 602, and the second drive chain 602 is fixedly connected to the first column 200.

[0086] Therefore, when the gantry crane is not in operation, the first column 200 can limit the drive component 603 and the second drive chain 602 to ensure that the gantry crane is in a stable and safe static state.

[0087] In some embodiments, the second drive chain 602 is welded and fixed to the first column 200.

[0088] In other embodiments, see Figure 3 The drive assembly 600 includes a first positioning block 604, which is located on the side of the first column 200 facing the drive assembly 600. The end of the transmission chain 501 facing away from the hook-up member 400 is fixedly connected to the first positioning block 604. When the gantry crane is running, especially during the lifting of heavy objects, the weight of the lifted object is transmitted to various components through the transmission chain 501. At this time, the first positioning block 604 acts as a stable "anchor point," firmly fixing the transmission chain 501 near the first column 200. With the strong vertical bearing capacity of the column, the tension borne by the transmission chain 501 is effectively distributed, avoiding the risk of loosening or breaking of the transmission chain 501 due to uneven or excessive force, ensuring the reliability of power transmission, and enabling the lifting operation to proceed smoothly and continuously.

[0089] Furthermore, the first positioning block 604 provides great convenience for operators. Since the first positioning block 604 fixes one end of the transmission chain 501, the initial installation position of the transmission chain 501 can be accurately determined, reducing the wasted debugging time caused by inaccurate positioning of the transmission chain 501 and improving the assembly efficiency of the equipment.

[0090] During the aforementioned transmission process, although the lengths of the various parts of the transmission chain 501 change accordingly, the transmission chain 501 always moves on the gantry crane, ensuring the stability of the entire process.

[0091] In addition, when the drive unit 603 is in operation, the power is efficiently transmitted to the first column 200 through the second drive chain 602, so that the column can provide a more solid vertical support for the overall structure of the gantry crane, enhance the stability of the entire equipment when lifting heavy objects, and prevent safety hazards such as tilting and shaking due to uneven force.

[0092] This application uses the fixed connection of one end of the transmission chain 501 away from the hook 400 to the first positioning block 604 as an example. Correspondingly, see [link to relevant documentation]. Figure 3 The drive assembly 600 also includes a second positioning block 605, which is located on the side of the first column 200 facing the drive assembly 600. The end of the second drive chain 602 facing away from the drive member 603 is fixedly connected to the second positioning block 605.

[0093] Based on this, the second positioning block 605 can establish a fixed relationship between the second drive chain and the first column 200, thereby ensuring that the drive component 600 is always fixed on the first column 200, effectively preventing unnecessary movement of the drive component 600, ensuring its stable operation, and thus making the equipment run more smoothly.

[0094] In some embodiments, this application also provides a radiotherapy room, which includes the aforementioned gantry crane, and the gantry crane is installed in the radiotherapy clinic.

[0095] In a radiotherapy room, it may be necessary to install new radioactive sources, such as cobalt source cartridges, onto the radiotherapy equipment or replace old radioactive sources with new ones. Radioactive sources are usually highly radioactive and are typically stored in shielded storage tanks. These storage tanks are made of shielding materials such as lead and are very heavy. During the loading / replacement of sources, a gantry crane is needed to move the storage tanks.

[0096] The following example illustrates the lifting workflow of the gantry crane in this application, using the case of a gantry crane in a radiotherapy room and the load to be lifted being a source tank.

[0097] 1. The operator uses the drive assembly 600 to drive the transmission chain 501 to move the transverse trolley 700 horizontally along the crossbeam 100 to the horizontal position of the corresponding weight above the storage tank.

[0098] 2. The operator inserts the fixing piece 705 through the adjustment hole 102 and the positioning hole 704 in sequence so that the transverse trolley 700 is locked in the horizontal position of the weight on the crossbeam 100, and pulls the transmission chain 501 to connect the hook piece 400 at one end of the transmission chain 501 to the storage tank.

[0099] 3. The operator uses the drive assembly 600 to drive the transmission chain 501 to lift the storage tank to the target height, and inserts the lock 506 into the through hole 5031 of the sleeve 503 and the transmission chain 501 to lock the storage tank at the target height.

[0100] 4. The operator removes the fixing part 705 from the adjustment hole 102 and the positioning hole 704, and drives the transmission chain 501 through the drive component 600 to move the transverse trolley 700 horizontally along the crossbeam 100 to the target horizontal position corresponding to the weight to be placed (target position);

[0101] 4. The operator inserts the fixing piece 705 through the adjustment hole 102 and the positioning hole 704 in sequence so that the transverse trolley 700 is locked again in the horizontal position of the weight to be placed on the crossbeam 100.

[0102] 5. The operator uses the drive assembly 600 to drive the transmission chain 501 to lower the storage tank to the ground, and then disconnects the hook 400 at one end of the transmission chain 501 from the storage tank.

[0103] Thus, through the above steps, the storage tank is smoothly moved from its original position to the target position using the gantry crane.

[0104] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0105] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gantry crane, characterized in that, include: First column and second column; A crossbeam, which connects the first column and the second column; A mounting bracket is provided between the first column and the second column, and the mounting bracket is used to lift heavy objects; A transmission assembly, the transmission assembly including a transmission chain, a first part of the transmission chain being connected to the hook member; A drive assembly is located on the side of the first column away from the second column and is connected to the second part of the transmission chain. It is used to pull or release the transmission chain to move the hook-up component along the height direction of the gantry crane.

2. The gantry crane according to claim 1, characterized in that, Also includes: A traverse trolley is slidably connected to the crossbeam and connected to the transmission assembly. The traverse trolley is adapted to slide along the extension direction of the crossbeam to drive the transmission assembly and the hook-up member to move.

3. The gantry crane according to claim 2, characterized in that, The transmission assembly also includes: A first transmission guide component is connected to the transverse trolley. The transmission chain further includes a third part, which is connected between the first part and the second part. The third part is wound around the first transmission guide, which is adapted to drive the traverse trolley to move.

4. The gantry crane according to claim 2, characterized in that, Also includes: A lateral locking structure is connected to the lateral trolley, the lateral locking structure being adapted to lock the lateral trolley on the crossbeam so that the lateral trolley cannot slide along the crossbeam.

5. The gantry crane according to claim 4, characterized in that, The crossbeam has at least one adjustment hole, and the traverse trolley has at least one positioning hole. During the sliding of the traverse trolley along the crossbeam, one of the positioning holes can selectively be opposite to one of the adjustment holes in the at least one adjustment hole. The lateral locking structure includes a fixing member that is slidably disposed in the positioning hole and the adjustment hole opposite to the positioning hole.

6. The gantry crane according to claim 2, characterized in that, Also includes: A first limiting member is connected to the transverse trolley, and the first limiting member is adapted to engage with the transmission chain so that the transmission chain cannot be released or pulled out.

7. The gantry crane according to claim 6, characterized in that, The transmission chain includes multiple through holes, and the first limiting member includes: A sleeve is fitted around the outer periphery of the transmission chain and connected to the transverse trolley, and the sleeve is provided with at least one through hole, wherein at least one through hole can be selectively opposite any one of the through holes; A latch is slidably inserted into the through hole and the through hole opposite to the through hole. The latch is adapted to lock the position of the transmission chain relative to the sleeve so that the transmission chain cannot be pulled out or released.

8. The gantry crane according to claim 3, characterized in that, The second part includes a first sub-part, a second sub-part, and a third sub-part connected in sequence, wherein the third sub-part is connected to the third part, and the transmission assembly further includes: The second transmission guide is disposed on the crossbeam and located above the drive assembly, and the second sub-part is wrapped around the second transmission guide. A third transmission guide, wherein the third sub-part is wound around the third transmission guide, and the third transmission guide is connected to the drive assembly.

9. The gantry crane according to claim 8, characterized in that, The driving component includes: A first drive chain, the first drive chain being adapted to connect to the first sub-part of the second part of the transmission chain; A driving component, which is connected to the first driving chain, is used to pull or release the first driving chain. The second drive chain, wherein the drive component is connected to the second drive chain, and the second drive chain is fixedly connected to the first column; The first positioning block is located on the side of the first column facing the drive assembly, and the end of the transmission chain away from the hook is fixedly connected to the first positioning block.

10. A radiotherapy room, characterized in that, include: The gantry crane as described in any one of claims 1-9, wherein the gantry crane is located in the radiotherapy room.

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