Novel tail gate device of gantry crane
By adopting an inner sliding groove structure and sliding components for the bottom and top rails in the tailgate device of the gantry crane, the problem of easy damage to the pulleys is solved, enabling smooth movement of the gate and simple maintenance, thus improving safety and operational efficiency.
Patent Information
- Application Number
- CN202520129269.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The pulleys of the tailgate device of the existing gantry crane are prone to damage, resulting in poor opening and closing, and are difficult to replace, which affects the efficiency and safety of operation.
The door features an internal sliding groove structure with bottom and top rails, combined with sliding components and elastic elements, enabling smooth door movement, reducing wear, and protecting the sliding structure with baffles to increase safety and convenience.
It improves the service life and safety of the tailgate device, reduces the possibility of failure, simplifies the maintenance process, and ensures the continuity of operations and personnel safety.
Smart Images
Figure CN223804768U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of hoisting machinery, specifically, and relates to a novel tail door device of a portal crane. BACKGROUND
[0002] In various cargo loading and hoisting scenarios, portal cranes play an important role. However, in the design of existing portal crane tail door devices, there are some problems that need to be solved. The tail door device usually relies on pulleys under the door to achieve smooth opening and closing actions. However, in actual use, due to the complexity of the crane operating environment and the frequency of work intensity, these pulleys bear a lot of pressure and friction. On the one hand, long-term high-load operation causes the pulleys to be prone to wear, deformation, and even damage, which can affect the safety of the operator when the tail door is opened and closed. On the other hand, when the pulley needs to be replaced due to damage, the existing tail door device structure design is not reasonable, the operation space for replacing the pulley is small, the steps are complicated, and a lot of time and manpower is needed. Not only that, but during the replacement of the pulley, the operation of the crane may need to be temporarily suspended, which will undoubtedly affect the progress and efficiency of the entire loading and hoisting work. In addition, due to the difficulty of replacing the damaged pulley, if it cannot be replaced in time, it may cause the tail door device to malfunction, increase equipment maintenance costs, and even affect the overall safety and stability of the crane. SUMMARY
[0003] The utility model provides a novel tail door device of a portal crane, which solves the problem of easy damage of the pulley in the tail door device of the portal crane in related technology.
[0004] The technical solution of the utility model is as follows:
[0005] A novel tail door device of a portal crane includes:
[0006] A bottom rail has a first inner sliding groove;
[0007] A top rail is located above the bottom rail and has a second inner sliding groove;
[0008] A door body has a first sliding part and a second sliding part at the bottom and top, respectively, and the first and second sliding parts are slidingly arranged in the first and second inner sliding grooves, respectively.
[0009] As a further technical solution, it also includes:
[0010] A baffle is arranged above the top rail and has an extended baffle part.
[0011] As a further technical solution, the top rail and the bottom rail are arranged in parallel, the length direction of the top rail is defined as the transverse direction, the door body has an inner sliding cavity, one side of the inner sliding cavity in the transverse direction has an open slot, and the door body further comprises:
[0012] A sliding block is arranged in the open slot and is arranged to slide in the transverse direction.
[0013] A first elastic member has one end acting on the side wall of the open slot in the transverse direction and the other end acting on the sliding block, and provides a force for the sliding block to slide away from the side wall of the open slot.
[0014] As a further technical solution, one side of the bottom rail further has a first clamped part, one side of the inner sliding cavity further has a first vertical through slot, and the door body further comprises:
[0015] A first sliding clamping member is arranged in the first vertical through slot and extends into the inner sliding cavity, and the first sliding clamping member is arranged to abut against or cancel abutment against the first clamped part after being arranged to slide up and down.
[0016] As a further technical solution, the door body further comprises:
[0017] A first connecting rod is arranged in the inner sliding cavity, one end of the first connecting rod is hingedly connected to the sliding block, and the other end of the first connecting rod is hingedly connected to the first sliding clamping member, and the sliding block is arranged to slide in the transverse direction and drive the first sliding clamping member to slide up and down through the first connecting rod.
[0018] As a further technical solution, the door body further comprises:
[0019] A second elastic member has one end acting on the bottom wall of the inner sliding cavity and the other end acting on the first sliding clamping member, and provides a force for the first sliding clamping member to slide upward.
[0020] As a further technical solution, one side of the top rail further has a second clamped part, one side of the inner sliding cavity further has a second vertical through slot, and the door body further comprises:
[0021] A second sliding clamping member is arranged in the second vertical through slot and extends into the inner sliding cavity, and the first sliding clamping member and the second sliding clamping member are arranged to slide toward or away from each other, and the second sliding clamping member is arranged to abut against or cancel abutment against the second clamped part after being arranged to slide up and down.
[0022] As a further technical solution, the door body further comprises:
[0023] A second connecting rod is arranged in the inner sliding cavity, one end of the second connecting rod is hingedly connected with the sliding block, and the other end of the second connecting rod is hingedly connected with the second sliding clamping piece; the sliding block is configured to drive the second sliding clamping piece to ascend and slide by the second connecting rod after transverse sliding.
[0024] As a further technical solution, further comprising:
[0025] A third elastic member is arranged, one end of the third elastic member acts on the top wall of the inner sliding cavity, and the other end of the third elastic member acts on the second sliding clamping piece, so as to provide a downward sliding force for the second sliding clamping piece.
[0026] As a further technical solution, the door body is two and symmetrically arranged, and the two door bodies are provided with magnetic members on the side close to each other; the sliding block is configured to be at the same height as the magnetic member in the transverse direction in the static state.
[0027] The working principle and beneficial effects of the utility model are as follows:
[0028] In the utility model, in the opening and closing process of the door body, the first sliding part at the bottom of the door body slides in the first inner sliding groove of the bottom rail, and the second sliding part at the top slides in the second inner sliding groove of the top rail, so that the stable movement of the door body is realized. Through the cooperation of the upper and lower sliding grooves and the sliding parts, the stability and smoothness of the door body in the opening and closing process are ensured, and the shaking and jamming are reduced. The sliding structure can uniformly disperse the stress, reduce the abrasion between the parts, and prolong the service life. Compared with the traditional structure relying on the pulley, the utility model is more simple, and the possibility of failure is reduced. The structure is simple, and the daily inspection and maintenance work is facilitated, and the maintenance cost is reduced. Stable door body movement ensures the safety of personnel and equipment in the operation process. BRIEF DESCRIPTION OF DRAWINGS
[0029] The above characteristics, technical features, advantages and implementation modes of the utility model will be further described in the following clear and understandable manner combined with the preferred embodiments and the drawings.
[0030] Figure 1 It is a structural schematic diagram of the utility model;
[0031] Figure 2 It is another perspective structural schematic diagram of the utility model;
[0032] Figure 3 It is an internal structural schematic diagram of the utility model;
[0033] Figure 4 It is Figure 3 It is an enlarged structural schematic diagram of A part in the utility model.
[0034] In the figure: the bottom rail-1, the first inner sliding groove-101, the first clamped part-102, the top rail-2, the second inner sliding groove-201, the second clamped part-202, the door body-3, the first sliding part-301, the second sliding part-302, the inner sliding cavity-303, the opening slot-304, the first vertical through slot-305, the second vertical through slot-306, the baffle-4, the extended blocking part-401, the sliding block-5, the first elastic member-6, the first sliding clamping piece-7, the first connecting rod-8, the second elastic member-9, the second sliding clamping piece-10, the second connecting rod-11, the third elastic member-12, the magnetic member-13. DETAILED DESCRIPTION
[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings and embodiments according to these drawings without creating any creative labor.
[0036] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0037] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0038] In addition, in the description of the present application, the terms "first", "second" and the like are only used for distinction and description, and cannot be understood as indicating or implying relative importance.
[0039] Reference Figures 1-4 The embodiment of the present application proposes a new tail door device of a portal crane, which comprises a bottom rail 1, the bottom rail 1 has a first inner sliding groove 101; a top rail 2 is located above the bottom rail 1, the top rail 2 has a second inner sliding groove 201;
[0040] The bottom and the top of the door body 3 are respectively provided with a first sliding part 301 and a second sliding part 302, which are respectively slidably arranged in the first inner sliding groove 101 and the second inner sliding groove 201.
[0041] In the opening and closing process of the door body 3, the first sliding part 301 at the bottom of the door body 3 slides in the first inner sliding groove 101 of the bottom rail 1, and the second sliding part 302 at the top of the door body 3 slides in the second inner sliding groove 201 of the top rail 2, so as to realize the stable movement of the door body 3. Through the cooperation of the upper and lower sliding grooves and the sliding parts, the stability and smoothness of the door body 3 in the opening and closing process are ensured, and the shaking and jamming are reduced. The sliding structure can uniformly disperse the stress and reduce the wear between the parts, prolonging the service life. Compared with the traditional structure relying on pulleys, it is more simple and reduces the possibility of failure. The structure is simple, which is convenient for daily inspection and maintenance work, and reduces the maintenance cost. The stable movement of the door body 3 ensures the safety of personnel and equipment during operation.
[0042] Further, the tailgate device further comprises a baffle 4, the baffle 4 is arranged above the top rail 2, and the baffle 4 has an extending blocking part 401.
[0043] In the use process of the tailgate device, the extending blocking part 401 of the baffle 4 can completely cover the top rail 2, the bottom rail 1 and the door body 3. The top rail 2, the bottom rail 1 and the door body 3 are provided with all-round shielding, which effectively blocks the invasion of external sundries, dust, rainwater and the like, and protects the sliding structure and the door body 3 from being damaged. The accumulation of dust and sundries is prevented, the sliding part is kept clean, and the sliding difficulty and wear caused by pollution are reduced. Rainwater and the like are avoided from directly contacting the parts, the corrosion risk is reduced, and the service life of each part is prolonged. The adaptability of the tailgate device in bad weather and complex working conditions is enhanced, and the normal operation of the crane is ensured.
[0044] Further, the top rail 2 and the bottom rail 1 are arranged in parallel, the length direction of the top rail 2 is defined as the transverse direction, the door body 3 has an inner sliding cavity 303, one side of the transverse direction of the inner sliding cavity 303 is provided with an open groove 304, and the tailgate device further comprises a sliding block 5, which is slidably arranged in the open groove 304 in the transverse direction.
[0045] In this embodiment, when the door body 3 is closed, if there is an operator's limbs or sundries between the door body 3 and the door frame, the sliding block 5 will first contact the obstacle. Under the obstruction of the obstacle, the sliding block 5 compresses the first elastic member 6 to slide into the opening slot 304. When the obstacle is removed, the first elastic member 6 pushes the sliding block 5 to reset. It effectively avoids the door body 3 from being pinched when closing, ensuring the safety of the personnel. It prevents the door body 3 from being damaged due to being pinched with sundries, prolonging the service life of the door body 3. Through the cooperation of the elastic member and the sliding block 5, it can automatically adapt to the obstacle without additional operation. It reduces the failure and maintenance caused by pinching people or objects, and improves the overall reliability of the tailgate device.
[0046] Further, one side of the bottom rail 1 also has a first clamped part 102, and one side of the inner sliding cavity 303 also has a first vertical through slot 305. It further comprises a first sliding clamping member 7, which is arranged in the first vertical through slot 305 and extends into the inner sliding cavity 303. The first sliding clamping member 7 abuts or cancels abutment with the first clamped part 102 after ascending or descending sliding.
[0047] In this embodiment, if an emergency occurs and needs to be stopped urgently during the closing or opening of the door body 3, the first sliding clamping member 7 rapidly descends to abut the first clamped part 102, so that the door body 3 immediately stops moving. Under normal circumstances, the first sliding clamping member 7 ascends to cancel the abutment with the first clamped part 102, without affecting the normal opening and closing of the door body 3. It can quickly realize the emergency stop of the door body 3 under emergency conditions, effectively avoiding the further expansion of danger. It adds a reliable safety guarantee for the operation of the door body 3, reduces the possibility of accidents. It timely stops the movement of the door body 3, reduces the damage of equipment and personnel casualties caused by out of control. It makes the tailgate device have better ability to respond to sudden conditions in complex working environment.
[0048] Further, it further comprises a first connecting rod 8, which is located in the inner sliding cavity 303. One end of the first connecting rod 8 is hinged with the sliding block 5, and the other end is hinged with the first sliding clamping member 7. The sliding block 5 is configured to slide horizontally, and drive the first sliding clamping member 7 to ascend and descend through the first connecting rod 8.
[0049] In this embodiment, when the door body 3 encounters an obstacle during closing, the sliding block 5 is pressed and slides horizontally, the first sliding clamp 7 is driven to rise by the first connecting rod 8, the abutment with the first clamped part 102 is released, and the closing action of the door body 3 is stopped. When the obstacle is removed, the sliding block 5 is reset under the action of the first elastic member 6, the first sliding clamp 7 is driven to descend by the first connecting rod 8, and the abutment with the first clamped part 102 is re-established. The linkage of the sliding block 5 and the first sliding clamp 7 is achieved, the automation degree and response speed of the device are improved, and the sliding block 5 and the first sliding clamp 7 are accurately controlled according to the situation when the door body 3 is closed. The safety of the door body 3 operation is ensured. Through the transmission of the connecting rod, the additional control mechanism is reduced, and the structure of the device is more simple and compact. The simplification of the structure and the reduction of the parts help to reduce the manufacturing and maintenance cost of the device.
[0050] Further, the second elastic member 9 is further included, one end of the second elastic member 9 acting on the bottom wall of the inner sliding cavity 303, and the other end acting on the first sliding clamp 7, providing the upward sliding force of the first sliding clamp 7.
[0051] In this embodiment, in the normal state, the second elastic member 9 lifts the first sliding clamp 7 upward. When the sliding block 5 slides horizontally and drives the first sliding clamp 7 to descend through the first connecting rod 8, the second elastic member 9 is compressed. When the sliding block 5 is reset, the elastic force of the second elastic member 9 makes the first sliding clamp 7 rise rapidly. It ensures that the first sliding clamp 7 can quickly return to the initial position after the obstacle is removed, and improves the efficiency of the door body 3 operation.
[0052] Further, one side of the top rail 2 also has a second clamped part 202, one side of the inner sliding cavity 303 also has a second vertical through slot 306, and the second sliding clamp 10 is further included, the second sliding clamp 10 being arranged in the second vertical through slot 306 and extending into the inner sliding cavity 303, the first sliding clamp 7 and the second sliding clamp 10 being configured to slide away from or close to each other, and the second sliding clamp 10 abutting or canceling the abutment with the second clamped part 202 after sliding.
[0053] In this embodiment, when the door body 3 needs to be fixed, the first sliding clamping piece 7 is lowered to abut against the first clamped part 102, and the second sliding clamping piece 10 is raised to abut against the second clamped part 202, so as to firmly fix the door body 3. When the door body 3 needs to be opened, the first sliding clamping piece 7 is raised to cancel the abutment, and the second sliding clamping piece 10 is lowered to cancel the abutment. The unique design that the first sliding clamping piece 7 is lowered to abut and the second sliding clamping piece 10 is raised to abut provides diversified fixing strategies and enhances the reliability of the fixed door body 3. The abutment in different directions up and down makes the constraint force on the door body 3 more comprehensive when it is fixed, greatly improving the stability of the door body 3. Reliable fixation effectively prevents the door body 3 from moving accidentally, ensuring the safety of the operating personnel and the normal operation of the equipment. Stable door body 3 fixation helps to improve the working efficiency of the crane and reduce the interruption of work caused by the door body 3 problem.
[0054] Further, the second connecting rod 11 is located in the inner sliding cavity 303, one end of the second connecting rod 11 is hinged to the sliding block 5, and the other end is hinged to the second sliding clamping piece 10. The sliding block 5 is configured to slide transversely, and then drive the second sliding clamping piece 10 to slide up and down through the second connecting rod 11.
[0055] In this embodiment, when the door body 3 encounters an obstacle during closing, the sliding block 5 is squeezed to slide transversely, and the second sliding clamping piece 10 is driven to slide up and down through the second connecting rod 11. When the obstacle is removed, the sliding block 5 is reset under the action of the first elastic member 6, and the second sliding clamping piece 10 is driven to return to the initial abutment state through the second connecting rod 11. The linkage of the sliding block 5 and the second sliding clamping piece 10 is realized, and the action of the first sliding clamping piece 7 is coordinated to improve the overall response performance of the device. The up and down of the second sliding clamping piece 10 can be accurately controlled according to the transverse sliding of the sliding block 5, ensuring the safety and stability of the door body 3 in various situations.
[0056] Further, the third elastic member 12 is provided, one end of the third elastic member 12 acts on the top wall of the inner sliding cavity 303, and the other end acts on the second sliding clamping piece 10, providing a force for the second sliding clamping piece 10 to slide downward.
[0057] Further, the door body 3 is two and symmetrically arranged, and each side of the two door bodies 3 close to each other has a magnetic member 13. The sliding block 5 is configured to be at the same height as the magnetic member 13 in the transverse direction when static.
[0058] In the embodiment, under normal circumstances, when the two door bodies 3 are close to each other and adhere to each other, the magnetic member 13 generates a weak suction force, so that the door body 3 is easily in a closed state. However, when there is an obstacle between the two door bodies 3, the suction force is not strong enough to achieve adsorption and closing. The magnetic force helps the door body 3 to naturally reach the closed state when there is no obstacle, and the operation is more convenient. When there is an obstacle, the magnetic force is not strong enough to force the door body 3 to close, preventing damage or failure caused by forced closing. Avoiding accidental clamping of operators or objects due to strong adsorption, ensuring work safety.
[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application. It should be included in the scope of the claims of the present application.
Claims
1. A new type of tailgate device for a portal crane, characterized in that The utility model relates to a door and drawer system, including: Bottom rail (1), first inner sliding groove (101) have with the bottom rail (1); Top rail (2), top rail (2) are located above the bottom rail (1), second inner sliding groove (201) have with the top rail (2); Door body (3), the bottom and top of door body (3) are provided with first sliding part (301) and second sliding part (302) respectively, first sliding part (301) and second sliding part (302) are slidably arranged in first inner sliding groove (101) and second inner sliding groove (201) respectively.
2. A new type of tail door device for a portal crane according to claim 1, characterized in that, Also including: Baffle (4), baffle (4) are arranged above the top rail (2), baffle (4) have extension blocking part (401).
3. A new type of tail door device for a portal crane according to claim 1, characterized in that, The top rail (2) and the bottom rail (1) are arranged in parallel, the length direction of the top rail (2) is defined as the transverse direction, the door body (3) has an inner sliding cavity (303), one side of the transverse direction of the inner sliding cavity (303) has an open slot (304), and further comprising: Sliding block (5), the sliding block (5) is slidably arranged in the open slot (304) along the transverse direction; First elastic member (6), one end of the first elastic member (6) acts on the side wall of one side of the open slot (304), and the other end acts on the sliding block (5), to provide the sliding force of the sliding block (5) away from the side wall of the open slot (304).
4. A new type of tail door device for a portal crane according to claim 3, characterized in that One side of the bottom rail (1) further has a first clamped part (102), one side of the inner sliding cavity (303) further has a first vertical through slot (305), and further comprising: First sliding clamping member (7), the first sliding clamping member (7) is arranged in the first vertical through slot (305) and extends into the inner sliding cavity (303), and the first sliding clamping member (7) is arranged in the first vertical through slot (305) and extends into the inner sliding cavity (303), and the first sliding clamping member (7) is arranged in the first vertical through slot (305) and extends into the inner sliding cavity (303).
5. A new type of tail door device for a portal crane according to claim 4, characterized in that Further comprising: First connecting rod (8), the first connecting rod (8) is located in the inner sliding cavity (303), one end of the first connecting rod (8) is hinged to the sliding block (5), and the other end is hinged to the first sliding clamping member (7), and the sliding block (5) is configured to slide transversely, and the first sliding clamping member (7) is driven to slide up and down by the first connecting rod (8).
6. A new type of tail door device for a portal crane according to claim 4, characterized in that, Further comprising: Second elastic member (9), one end of the second elastic member (9) acts on the bottom wall of the inner sliding cavity (303), and the other end acts on the first sliding clamping member (7), to provide the sliding force of the first sliding clamping member (7) upward.
7. A new type of tail door device for a portal crane according to claim 4, characterized in that One side of the top rail (2) further has a second clamped part (202), one side of the inner sliding cavity (303) further has a second vertical through slot (306), and further comprising: Second sliding clamping member (10), the second sliding clamping member (10) is arranged in the second vertical through slot (306) and extends into the inner sliding cavity (303), and the first sliding clamping member (7) and the second sliding clamping member (10) are configured to slide and approach or move away from each other, and the second sliding clamping member (10) is arranged in the second vertical through slot (306) and extends into the inner sliding cavity (303).
8. A new type of tail door device for a portal crane according to claim 7, characterized in that Further comprising: A second connecting rod (11) is located in the inner sliding cavity (303), one end of the second connecting rod (11) is hinged with the sliding block (5), the other end is hinged with the second sliding clamping piece (10), and the sliding block (5) is configured to drive the second sliding clamping piece (10) to lift and slide after lateral sliding.
9. A new type of tail door device for a portal crane according to claim 7, characterized in that Further comprising: A third elastic member (12) acts on one end of the top wall of the inner sliding cavity (303) and the other end of the second sliding clamping piece (10), providing a force for the downward sliding of the second sliding clamping piece (10).
10. A new type of tail door device for a portal crane according to claim 3, characterized in that, The door body (3) is two and symmetrically arranged, and the side close to each other of the two door bodies (3) is provided with a magnetic member (13), and the sliding block (5) is configured to be at the same height as the magnetic member (13) in the lateral direction when static.