Locking structure and tire unloading apparatus

Abstract

The utility model provides a kind of locking structure and tire unloading equipment, comprising: guide rail;Locking device, locking device is slidably connected with guide rail;First locking component, first locking component is installed on locking device, first locking component includes the locking portion that can abut with the side wall of guide rail, first locking component has the locking state and the unlocking state with the connection of guide rail, when first locking component is in locking state, locking portion abuts with the side wall of guide rail, when first locking component is in unlocking state, locking device can slide along guide rail.The locking structure in the utility model solves the technical problem that the safety hazard of sudden falling of tire unloading arm exists in the related art.

Description

Technical Field

[0001] This utility model relates to the technical field of tire unloading equipment, specifically to a locking structure and tire unloading equipment. Background Technology

[0002] In the tire manufacturing process, the tire unloading device of the vulcanizing machine transfers tires via the unloading arm. Due to the arm's considerable weight and the susceptibility to problems such as motor brake aging and gear / rack wear after prolonged operation, there is a safety hazard of the unloading arm suddenly falling. Workers performing tire repair operations must operate below the unloading arm; a fall would pose a serious threat to their safety.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a locking structure and tire unloading equipment to solve the technical problem of the safety hazard of sudden fall of the tire unloading arm in related technologies.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a locking structure is provided, comprising: a guide rail; a device to be locked, the device to be locked being slidably connected to the guide rail; a first locking component, the first locking component being mounted on the device to be locked, the first locking component including a locking part that can abut against the side wall of the guide rail, the first locking component having a locked state and an unlocked state connected to the guide rail, when the first locking component is in the locked state, the locking part abuts against the side wall of the guide rail, when the first locking component is in the unlocked state, the device to be locked can slide along the guide rail.

[0006] Furthermore, the locking structure includes a mounting base connected to the device to be locked, and a first locking component is mounted on the mounting base.

[0007] Furthermore, the mounting base includes interconnected components: a first mounting plate connected to the device to be locked; and a second mounting plate connected to the first locking component, wherein the side of the second mounting plate near the guide rail protrudes from the first mounting plate.

[0008] Furthermore, a first mounting hole is provided on the first mounting plate. The first mounting hole is an oblong hole. The first mounting hole includes multiple holes, which are spaced apart on the first mounting plate.

[0009] Furthermore, the locking structure includes a second locking component, which includes a safety pin. The safety pin is telescopically configured, and a locking hole is provided on the guide rail corresponding to the safety pin. The locking hole is used to accommodate the safety pin.

[0010] Furthermore, the locking structure includes: a third locking component, which includes an eccentric gear that is movably connected to the device to be locked and is rotatably mounted; and a rack whose extending direction is consistent with the extending direction of the guide rail, and the eccentric gear and the rack mesh with each other.

[0011] Furthermore, the locking device includes: a mounting rod, the axis of which is perpendicular to the extension direction of the rack, and an eccentric gear is sleeved on the mounting rod, the eccentric gear being detachably connected to the mounting rod.

[0012] Furthermore, the mounting rod includes a first connecting section and a second connecting section that are connected to each other. An eccentric gear is fitted on the first connecting section, and an external thread is provided on the second connecting section for threaded connection with the mounting nut.

[0013] Furthermore, the locking structure includes a control device, which is signal-connected to both the device to be locked and the first locking component. The control device controls the first locking component to switch between a locked state and an unlocked state according to the movement state of the device to be locked.

[0014] A tire unloading device, comprising the aforementioned locking structure.

[0015] Beneficial effects: 1. When the locking structure is applied to the tire unloading equipment, the tire unloading arm serves as the device to be locked. When the operator is performing tire repair or other operations below the tire unloading equipment, the first locking component switches to the locked state, and its locking part abuts against the side wall of the guide rail. The locking structure ensures that the device to be locked is locked, keeping the tire unloading arm in a fixed position relative to the guide rail. This prevents the tire unloading arm from accidentally sliding or falling due to its own weight, aging of the motor brake, or wear of transmission components. It can effectively eliminate the safety hazards caused by the uncontrolled fall of the tire unloading arm, significantly improve the safety of operation and the reliability of equipment operation, and solve the technical problem of the safety hazard of sudden fall of the tire unloading arm in related technologies.

[0016] 2. The distance from the rotation center of the eccentric gear to the rack is equal to the minimum pitch circle radius of the eccentric gear. When the locking device stops operating, the teeth at the short shaft end of the eccentric gear mesh with the rack. At this time, the distance from the rotation center of the eccentric gear to the meshing surface of the rack is the minimum, forming a preset initial meshing state. If the locking device slides or falls unexpectedly due to a malfunction, the eccentric gear rotates around its rotation center under the action of gravity or resistance. Since its geometric center does not coincide with the rotation center, the distance from the rotation center to the meshing surface of the rack gradually increases during the rotation process. This leads to a decrease in the meshing clearance between the eccentric gear and the rack and the generation of radial compression. This applies an additional preload force between the meshing tooth surfaces, increasing the frictional resistance and mechanical biting force between the meshing surfaces of the eccentric gear and the rack. This restricts the degree of freedom of movement of the locking device along the guide rail direction, achieving the "meshing and locking" effect and preventing it from continuing to slide or fall.

[0017] 3. The third locking component works in conjunction with the first and second locking components to form multiple safety protections. In extreme working conditions, if the first and second locking components fail, the third locking component can still provide fall protection, effectively suppressing the accidental fall of the device to be locked in the stationary state, and comprehensively improving the operational safety and stability of heavy equipment such as tire unloading arms. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the tire unloading equipment used in an embodiment of this utility model; Figure 2 yes Figure 1 Enlarged view of point A in the image; Figure 3 This is a schematic diagram of the tire unloading equipment used in an embodiment of this utility model from another perspective; Figure 4 This is a schematic diagram of the mounting base with the locking structure used in this embodiment of the utility model; Figure 5 This is a side view of the mounting base of the locking structure used in this embodiment of the utility model.

[0019] The above figures include the following reference numerals: 1. Guide rail; 2. Locking device; 3. First locking component; 4. Mounting base; 41. First mounting plate; 411. First mounting hole; 42. Second mounting plate; 43. Weight reduction groove; 5. Third locking component; 6. Rack; 7. Mounting rod; 8. Mounting nut. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] According to an embodiment of this utility model, a locking structure is provided; please refer to [link / reference]. Figures 1 to 5The device includes: a guide rail 1; a locking device 2, which is slidably connected to the guide rail 1; and a first locking component 3, which is mounted on the locking device 2. The first locking component 3 includes a locking part that can abut against the side wall of the guide rail 1. The first locking component 3 has a locked state and an unlocked state connected to the guide rail 1. When the first locking component 3 is in the locked state, the locking part abuts against the side wall of the guide rail 1. When the first locking component 3 is in the unlocked state, the locking device 2 can slide along the guide rail 1.

[0022] Specifically, the locking device 2 is slidably connected to the guide rail 1, allowing it to reciprocate along a preset direction on the guide rail 1 to meet its position adjustment needs during operation. As the object to be locked, the locking device 2 can slide freely along the guide rail 1 in the unlocked state, but must be reliably fixed to the guide rail 1 in the locked state to prevent accidental displacement. For example, when the locking structure is applied to tire unloading equipment, the tire unloading arm acts as the locking device 2. During tire repair at a stop, the locking structure ensures that the locking device 2 is locked, maintaining its position relative to the guide rail and preventing the risk of accidental fall.

[0023] Specifically, the first locking component 3 is installed on the device to be locked 2, including a locking part that can abut against the side wall of the guide rail 1. The locking function is achieved by the locking part abutting against the side wall of the guide rail 1. The first locking component 3 has two working states: locked state and unlocked state. When in the locked state, the locking part forms a mechanical abutment with the side wall of the guide rail 1. The friction generated by this abutment overcomes the displacement tendency caused by the weight of the device to be locked 2, effectively preventing the device to be locked 2 from accidentally sliding or falling, and restricting the sliding freedom of the device to be locked 2 relative to the guide rail 1, thereby fixing it in the current position; when in the unlocked state, the device to be locked 2 is allowed to slide freely along the guide rail 1.

[0024] For example, when the locking structure is applied to tire unloading equipment, the tire unloading arm serves as the device to be locked 2. When the operator is performing tire repair or other operations below the tire unloading equipment, the first locking component 3 switches to the locked state, and its locking part abuts against the side wall of the guide rail 1. The locking structure ensures that the device to be locked 2 is locked, so that the tire unloading arm remains in a fixed position relative to the guide rail. This prevents the tire unloading arm from accidentally sliding or falling due to its own weight, aging of the motor brake, or wear of transmission components. It can effectively eliminate the safety hazards caused by the uncontrolled fall of the tire unloading arm, significantly improve the safety of operation and the reliability of equipment operation, and solve the technical problem of the safety hazard of sudden fall of the tire unloading arm in related technologies.

[0025] In the locking structure of this embodiment, see Figure 5The locking structure includes a mounting base 4, which is connected to the device 2 to be locked. A first locking component 3 is mounted on the mounting base 4. By setting the mounting base 4, the first locking component 3 can be installed on the device 2 to be locked, and the first locking component 3 can effectively cooperate with the guide rail, reducing the difficulty of equipment modification.

[0026] In the locking structure of this embodiment, see Figure 1 The mounting base 4 includes the following interconnected components: a first mounting plate 41, which is connected to the locking device 2; and a second mounting plate 42, which is connected to the first locking component 3. The side of the second mounting plate 42 near the guide rail 1 protrudes from the first mounting plate 41.

[0027] By designing the mounting base 4 as a split structure consisting of a first mounting plate 41 and a second mounting plate 42, functional partitioning is achieved. The first mounting plate 41 is dedicated to connecting with the device to be locked 2, ensuring that the entire mounting base 4 is firmly fixed to the device to be locked 2; the second mounting plate 42 is dedicated to supporting the first locking component 3, ensuring that its installation position maintains a precise spatial relationship with the guide rail 1, so that the first locking component 3 can effectively cooperate with the guide rail.

[0028] Specifically, the second mounting plate 42 protrudes from the first mounting plate 41 on the side near the guide rail 1, so that the installation position of the first locking component 3 is closer to the side wall of the guide rail 1, enabling the first locking component 3 to effectively cooperate with the guide rail 1, improving the stability of the locking action, and also avoiding structural interference between the first mounting plate 41 and the first locking component 3.

[0029] In the locking structure of this embodiment, see Figure 4 The first mounting plate 41 has a first mounting hole 411, which is an oblong hole. The first mounting hole 411 includes multiple holes, which are spaced apart on the first mounting plate 41.

[0030] Specifically, the oblong hole structure has a certain adjustment margin along its length, allowing the mounting base 4 to be finely positioned relative to the locking device 2 in a preset direction. This compensates for machining errors and assembly deviations, preventing misalignment caused by inconsistent positions between the guide rail 1 and the locking device 2. By loosening the connecting bolts and moving the mounting base 4 along the length of the oblong hole, the relative position of the first locking component 3 and the side wall of the guide rail 1 can be precisely adjusted, ensuring complete contact between the locking part and the guide rail 1 contact surface, thus improving the effectiveness of the locking action.

[0031] In some embodiments, the second mounting plate 42 has a plurality of threaded holes, and the first locking component 3 is mounted on the second mounting plate 42 by fastening screws.

[0032] In some embodiments, see Figure 4 The mounting base 4 has a through-hole weight reduction groove. By setting multiple weight reduction grooves, the weight of the mounting base 4 is reduced as much as possible while ensuring the connection function, thereby reducing the weight of the tire removal arm.

[0033] In the locking structure of this embodiment, the locking structure includes a second locking component, which includes a safety pin. The safety pin is telescopically provided, and a locking hole is provided on the guide rail 1 corresponding to the safety pin. The axial direction of the locking hole is perpendicular to the axis of the guide rail 1, and the locking hole is used to accommodate the safety pin.

[0034] In some embodiments, the first locking component 3 is provided with an air inlet, and the operation of the locking part is controlled pneumatically. Preferably, the second locking component can also be pneumatically controlled, by providing a cylinder and an air pipe, with the telescopic arm of the cylinder connected to the safety pin to control the extension and retraction of the safety pin.

[0035] In this way, by adding a T-junction to the air source of the safety pin cylinder extension, a compressed gas line is connected to the air inlet of the first locking component 3, allowing the first locking component 3 and the second locking component to lock or unlock simultaneously. For example, when the locking structure is applied to a tire unloading device, when the tire unloading arm is not moving, the cylinder extends, causing the safety pin to extend and insert into the locking hole. At the same time, the first locking component 3 also switches to the locked state, forming multiple layers of protection in conjunction with the safety pin.

[0036] Preferably, the first locking component 3 can be a guide rail lock in the prior art. The specific structure of the guide rail lock is in the prior art and will not be described in detail in this patent.

[0037] In the locking structure of this embodiment, see Figure 1 The locking structure includes: a third locking component 5, which includes an eccentric gear that is movably connected to the device 2 to be locked and is rotatably mounted; and a rack 6 whose extending direction is consistent with the extending direction of the guide rail 1, and the eccentric gear and the rack 6 mesh with each other.

[0038] Specifically, when the eccentric gear is installed, the distance from the rotation center of the eccentric gear to the rack is equal to the minimum pitch circle radius of the eccentric gear. When the locking device 2 stops operating, the teeth at the short shaft end of the eccentric gear mesh with the rack 6. At this time, the distance from the rotation center of the eccentric gear to the meshing surface of the rack 6 is the minimum, forming a preset initial meshing state. If the locking device 2 experiences an unexpected slippage or falling tendency due to a malfunction, the eccentric gear will rotate around its rotation center under the action of gravity or resistance. Since its geometric center does not coincide with the rotation center, the distance from the rotation center to the meshing surface of the rack 6 gradually increases during the rotation process, resulting in a decrease in the meshing clearance between the eccentric gear and the rack 6 and the generation of radial compression. This applies an additional preload force between the meshing tooth surfaces, increasing the frictional resistance and mechanical biting force between the meshing surfaces of the eccentric gear and the rack 6, thereby restricting the degree of freedom of movement of the locking device 2 along the guide rail 1, achieving the "meshing and locking" effect, and preventing it from continuing to slip or fall.

[0039] Specifically, the locking action of the third locking component 5 is automatically triggered by the mechanical structure characteristics of the eccentric gear itself, without the need for external power source or control system intervention. Even in extreme working conditions such as motor power failure, brake failure, or hydraulic system failure, it can still passively respond and provide fall protection, possessing a highly reliable passive safety function.

[0040] Understandably, the third locking component 5 works in conjunction with the first locking component 3 and the second locking component to form multiple safety protections. In extreme working conditions, even if the first locking component 3 and the second locking component fail, the third locking component 5 can still provide fall protection, effectively suppressing the accidental fall of the device to be locked 2 in the stationary state, and comprehensively improving the operational safety and stability of heavy equipment such as tire unloading arms.

[0041] In the locking structure of this embodiment, see Figure 2 The locking device includes a mounting rod 7, the axis of which is perpendicular to the extension direction of the rack 6. An eccentric gear is fitted on the mounting rod 7, and the eccentric gear is detachably connected to the mounting rod 7. By setting the axis of the mounting rod 7 to be perpendicular to the extension direction of the rack 6, making it the rotational support axis of the eccentric gear, it is ensured that the eccentric gear can rotate stably around the axis of the mounting rod 7.

[0042] It should be noted that, in order to avoid affecting the normal operation of the equipment, the eccentric gear is not required when the equipment is working normally. The eccentric gear is only installed on the locking device 2 when the locking device 2 is stopped. Therefore, the eccentric gear and the mounting rod 7 are connected in a detachable manner, so that the eccentric gear can be easily removed or replaced from the mounting rod 7.

[0043] In the locking structure of this embodiment, see Figure 1The mounting rod 7 includes a first connecting section and a second connecting section that are connected to each other. An eccentric gear is fitted on the first connecting section, and an external thread is provided on the second connecting section for threaded connection with the mounting nut 8. By providing the mounting nut 8, the eccentric gear is locked onto the mounting rod 7, and the eccentric gear and the mounting rod 7 are detachably connected, facilitating the installation and removal of the eccentric gear.

[0044] Specifically, the first connecting segment and the second connecting segment are spaced apart along the axial direction of the mounting rod 7, and the eccentric gear is rotatably mounted through the mounting rod 7.

[0045] In some embodiments, such as when the locking structure is applied to a tire unloading device, the tire unloading arm serves as the locking device 2, and a movable seat is provided above the main body of the tire unloading arm. The movable seat is slidably connected to the guide rail 1. The movable seat is equipped with a mounting seat 4 for fixing the first locking component 3, and an eccentric gear fixing seat for fixing the third locking component 5. The eccentric gear fixing seat is equipped with a mounting rod 7.

[0046] In the locking structure of this embodiment, see Figure 1 The locking structure includes a control device, which is signal-connected to both the device to be locked 2 and the first locking component 3. The control device controls the first locking component 3 to switch between a locked state and an unlocked state based on the movement state of the device to be locked 2. This facilitates automatic control of the first locking component 3; when the device to be locked 2 stops moving, the control device can automatically switch the first locking component 3 to the locked state.

[0047] In some embodiments, the control device is also connected to the second locking component to facilitate automatic control of the second locking component. When the device to be locked 2 stops moving, the control device can control the safety pin to extend automatically.

[0048] Understandably, the opening or closing of the first locking component 3 and the second locking component can also be controlled manually.

[0049] In the tire unloading equipment of this embodiment, see Figure 1 The tire unloading equipment includes the aforementioned locking structure. Applying the locking structure in this embodiment to a tire unloading device, by adding a first locking component 3, a second locking component, and a third locking component to the tire unloading arm, the tire unloading arm remains in a fixed position relative to the guide rail, forming multiple layers of protection. This effectively suppresses the accidental fall of the locking device 2 in the stationary state, comprehensively improving the operational safety and stability of heavy equipment such as the tire unloading arm, and solving the technical problem of the safety hazard of sudden fall of the tire unloading arm in related technologies.

[0050] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0051] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0052] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0053] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0054] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A locking structure, characterized in that, include: Guide rail (1); Locking device (2), which is slidably connected to the guide rail (1); The first locking component (3) is installed on the device to be locked (2). The first locking component (3) includes a locking part that can abut against the side wall of the guide rail (1). The first locking component (3) has a locked state and an unlocked state connected to the guide rail (1). When the first locking component (3) is in the locked state, the locking part abuts against the side wall of the guide rail (1). When the first locking component (3) is in the unlocked state, the device to be locked (2) can slide along the guide rail (1).

2. The locking structure according to claim 1, characterized in that, The locking structure includes a mounting base (4), which is connected to the device to be locked (2), and the first locking component (3) is mounted on the mounting base (4).

3. The locking structure according to claim 2, characterized in that, The mounting base (4) includes interconnected components: The first mounting plate (41) is connected to the locking device (2); The second mounting plate (42) is connected to the first locking component (3), and the second mounting plate (42) protrudes from the first mounting plate (41) on the side near the guide rail (1).

4. The locking structure according to claim 3, characterized in that, The first mounting plate (41) has a first mounting hole (411), which is an oblong hole. The first mounting hole (411) includes multiple holes, and the multiple first mounting holes (411) are spaced apart on the first mounting plate (41).

5. The locking structure according to claim 1, characterized in that, The locking structure includes a second locking component, which includes a safety pin. The safety pin is telescopically oriented, and the guide rail (1) has a locking hole corresponding to the safety pin. The locking hole is used to accommodate the safety pin.

6. The locking structure according to claim 1, characterized in that, The locking structure includes: The third locking component (5) includes an eccentric gear, which is movably connected to the locking device (2) and is rotatably disposed. The rack (6) extends in the same direction as the guide rail (1), and the eccentric gear meshes with the rack (6).

7. The locking structure according to claim 6, characterized in that, The device to be locked includes: Mounting rod (7), the axial direction of which is perpendicular to the extension direction of rack (6), and the eccentric gear is sleeved on the mounting rod (7), the eccentric gear being detachably connected to the mounting rod (7).

8. The locking structure according to claim 7, characterized in that, The mounting rod (7) includes a first connecting section and a second connecting section that are connected to each other. The first connecting section is fitted with the eccentric gear, and the second connecting section is provided with an external thread that is threaded to the mounting nut (8).

9. The locking structure according to claim 1, characterized in that, The locking structure includes a control device, which is signal-connected to the device to be locked (2) and the first locking component (3) respectively. The control device controls the first locking component (3) to switch between a locked state and an unlocked state according to the movement state of the device to be locked (2).

10. A tire unloading device, characterized in that, The tire removal device includes a locking structure as described in any one of claims 1-9.

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