Detachable livestock transport cage door structure
The quick-release double-locking component design solves the safety hazards caused by shaking and wear during livestock transport cage doors, achieving safe and efficient loading and unloading of livestock. It is suitable for the efficient, safe and clean needs of transporting small and medium-sized livestock and food-grade livestock.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 王城生
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-24
AI Technical Summary
In the existing livestock transport cage door structure, there is an unavoidable gap between the latch and the hole, which causes the cage door to shake and wear during transportation, generate noise and pose safety hazards. After long-term use, the latch may accidentally slip out, causing livestock to fall or escape, resulting in safety accidents and economic losses.
The system employs a quick-release dual locking assembly, including a rotating protrusion and a limiting block. Through the cooperation of an arc-shaped limiting groove and a return spring, a dual locking mechanism is formed, eliminating the gaps of traditional pin structures, ensuring that the cage door is not easily shaken during transportation, and providing redundant protection.
It effectively reduces shaking and wear during transportation, eliminates the risk of accidental opening of cage doors, improves transportation safety, prevents livestock from falling and escaping, and enhances loading and unloading efficiency and cleanliness, meeting high hygiene requirements.
Smart Images

Figure CN224539075U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of human life necessities, and in particular to a detachable livestock transport cage door structure. Background Technology
[0002] In the livestock farming industry, the transportation of livestock is a crucial link connecting the breeding end with the sales and processing end. As the core carrier equipment in the livestock transportation process, the rationality of the structure of the transport cage directly affects the transportation efficiency, livestock safety, and the convenience of the operators. The cage door, as a key component of the transport cage, undertakes the dual functions of sealing and protection and loading and unloading passage. The design of its locking structure is a core factor affecting the overall performance of the transport cage.
[0003] Currently, there are many types of livestock transport cage door structures on the market. The locking method of livestock transport cage doors mostly adopts a single pin-type fixed structure. The pin-type structure usually has a metal pin set on the edge of the door body. The lock is achieved by inserting the pin into the reserved hole in the cage frame. Although this structure has a low manufacturing cost, there is an unavoidable gap between the pin and the hole. During the transport vehicle's operation, the cage door is prone to shaking due to road bumps. The pin and the hole wall continuously collide and rub against each other, which not only produces a harsh noise, but also causes the pin and the edge of the hole to wear down gradually. After long-term use, the gap will continue to increase, and there may even be cases where the pin accidentally slips out of the hole, seriously threatening the safety during transportation. Once the cage door is accidentally opened, it is very likely that livestock will fall out and escape, causing road safety accidents or economic losses. Utility Model Content
[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a detachable livestock transport cage door structure. This structure can solve the problem that, due to the unavoidable gap between the latch and the hole, the cage door is prone to shaking due to road bumps during the transport vehicle's operation. The latch and the hole wall continuously collide and rub against each other, which not only produces a harsh noise, but also causes the edges of the latch and the hole to gradually wear down. After long-term use, the gap will continue to increase, and there may even be cases where the latch accidentally slips out of the hole, seriously threatening the safety during transportation. Once the cage door is accidentally opened, it is very likely to cause livestock to fall out and escape, causing road safety accidents or economic losses.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a detachable livestock transport cage door structure, including a support base, a collection box and a transport cage, wherein the transport cage is equipped with a quick-release double locking assembly; The quick-release double locking assembly includes a cage door, two protective shells, two rotating blocks, and two rotating protrusions. When the cage door is a flat cage door, the two protective shells are fixedly installed on the outer walls of both sides of the transport cage, and the two rotating blocks are rotatably installed on the upper surface of the protective shells. The outer walls of the two protective shells are provided with rotating protrusion mounting grooves, and the two rotating protrusions are rotatably installed inside the corresponding rotating protrusion mounting grooves. The two protective shells are slidably connected to the outer walls on both sides, and the inner walls of the two rotating protrusion mounting slots are provided with second limiting block slots. The inner walls of the two second limiting block slots are slidably connected with limiting blocks. The outer walls of the two rotating protrusions are provided with first limiting block slots. The upper surface of the transport cage is provided with a cage door sliding groove. The outer wall of the cage door component is slidably connected to the inner wall of the cage door sliding groove. The lower outer wall of the cage door component is provided with two arc-shaped limiting grooves. The outer walls of the two pull rods are fitted with return springs.
[0006] Preferably, the inner walls of both rotating protrusion mounting slots are arc-shaped; One side of the outer wall of each of the two rotating protrusions is flat.
[0007] Preferably, the ends of the two limiting blocks near the first limiting block groove both slide into the interior of the rotating protrusion mounting groove and are respectively slidably connected to the interior of the corresponding second limiting block groove.
[0008] Preferably, the ends of the two rotating blocks near the rotating protrusions both extend into the interior of the rotating protrusion mounting groove and are respectively fixedly connected to the upper surface of the corresponding rotating protrusions.
[0009] Preferably, the ends of the two pull rods near the limiting block slidably extend into the interior of the second limiting block groove and are respectively fixedly connected to the outer wall of the corresponding limiting block.
[0010] Preferably, when the outer arc surface of the two rotating protrusions contacts the inner wall of the corresponding arc-shaped limiting groove, the limiting block is located inside the first limiting block groove; The two ends of the two reset springs are fixedly connected to the outer wall of the corresponding limit block and the inner wall of the second limit block groove, respectively.
[0011] Preferably, the transport cage is fixedly installed on the upper surface of the support base; The outer wall of the support base is provided with a collection box groove.
[0012] Preferably, the outer wall of the collection box is slidably connected to the inside of the collection box groove; The slots on the lower surface of the transport cage are connected to the interior of the collection box.
[0013] Preferably, the cage door component is a fixed rod cage door; The fixed rod cage door is used in conjunction with the transport cage.
[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This detachable livestock transport cage door structure, through a quick-release double locking assembly, ensures that in the locked state, the outer arc-shaped wall of the rotating protrusion makes close contact with the inner wall of the arc-shaped limiting groove at the lower end of the cage door, forming the first mechanical limit. Utilizing the fitting characteristics of the arc structure, it effectively eliminates the gap between the traditional pin and the hole, fundamentally reducing the shaking amplitude during transport. Simultaneously, the limiting block, under the action of the return spring, inserts into the first limiting block groove of the rotating protrusion, forming the second locking. Through rigid limiting, the rotational freedom of the rotating protrusion is completely restricted. This double locking mechanism provides redundant protection. Even if the first arc-shaped limiting block shows slight wear due to long-term use, the second limiting block lock can still ensure that the cage door will not be opened accidentally, effectively avoiding the safety hazards caused by wear of a single pin structure, and eliminating road safety accidents and economic losses caused by livestock falling or escaping. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the external structure of the collection box of this utility model; Figure 3 This is a schematic diagram of the external structure of the rotating protrusion of this utility model; Figure 4 This utility model Figure 3 A structural schematic diagram of the enlarged view at point A in the middle; Figure 5 This is a schematic diagram of the external structure of the fixed rod cage door of this utility model.
[0016] Reference numerals in the attached drawings: 1. Support base; 2. Collection box; 3. Pull rod; 4. Rotating protrusion; 5. Rotating block; 6. Protective shell; 7. Cage door component; 8. Transport cage; 9. Cage door slide groove; 10. First limit block groove; 11. Limit block; 12. Return spring; 13. Arc-shaped limit groove; 14. Rotating protrusion mounting groove; 15. Second limit block groove; 16. Collection box slide groove; 17. Fixed rod cage door. Detailed Implementation
[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0021] Example 1: Example of quick disassembly of conventional small and medium-sized livestock transport cage doors This embodiment is applicable to short-distance transportation of small and medium-sized livestock (weight ≤100kg) such as pigs and sheep, demonstrating the basic limiting and disassembly functions of the quick-release double locking component, and meeting daily loading and unloading needs.
[0022] Structural fitting and disassembly process: The cage door component 7 is a rectangular steel pipe welded mesh door (mesh diameter 5cm), with an arc-shaped limiting groove 13 5mm deep, which fits against the arc surface of the rotating protrusion 4 (diameter 20mm, 45# steel material) (fitting gap ≤0.3mm). In the initial state, the return spring 12 naturally extends, pushing the limiting block 11 into the first limiting block groove 10 of the rotating protrusion. The arc surface of the rotating protrusion and the arc-shaped limiting groove are in close contact, achieving double locking (the cage door does not shake, and the load-bearing capacity is ≥200N).
[0023] When loading and unloading livestock, the operator rotates the two rotating blocks 5 (the handles have anti-slip textures) to rotate the rotating protrusion 4 by 30°, causing its arc surface to disengage from the arc-shaped limiting groove. Simultaneously, the operator pulls the pull rod 3 (pulling force ≤15N), causing the limiting block 11 to compress the reset spring 12 and exit the first limiting block groove. The cage door can then be pulled out upwards along the cage door slide 9 (disassembly time ≤20 seconds). During installation, the operation is reversed. The reset spring automatically pushes the limiting block to lock, and the rotating protrusion resets and fits into the limiting groove.
[0024] Application effects: The basic structure can stably limit the collision of small and medium-sized livestock, and there is no loosening of the cage door during transportation. The quick disassembly design saves 70% of loading and unloading time compared with traditional bolt fixing. It is suitable for daily turnover transportation in farms and slaughterhouses, and the single loading and unloading efficiency is increased to 3 minutes / cage.
[0025] Example 2: Hygienic and Easy-to-Disassemble Example This embodiment addresses the high hygiene requirements of food-grade livestock transportation (such as live animals supplied to Hong Kong). Through an easy-to-clean structural design, the cage door can be disassembled for thorough cleaning, reducing bacterial growth.
[0026] Easy-to-clean structural replacement: The cage door 7 adopts a detachable stainless steel mesh door (the mesh can be removed and cleaned separately), the rotating protrusion 4 has an electrolytically polished surface (no dead corners, easy to clean), the inner wall of the arc-shaped limiting groove 13 has a rounded corner (radius 2mm) to avoid dirt accumulation, and the connection between the pull rod 3 and the protective shell 6 adopts a waterproof sealing structure (with O-rings) to prevent cleaning water from entering the interior. Disassembly process: After quickly pulling out the cage door, the mesh door can be directly pressure washed. The rotating protrusions and limiting grooves eliminate any dead corners where dirt can accumulate, and it can be wiped clean with a cloth. Cleaning time is reduced by 60% compared to conventional cage doors. Hygiene benefits: The easy-to-clean structure reduces bacterial residue on the cage door by 90%, meeting the hygiene requirements of GB / T20014-2019 Good Agricultural Practices, and is suitable for live animal export transportation scenarios with high cleanliness requirements.
[0027] Furthermore, when using this device, when closing the cage door, the cage door component 7 is slid downwards along the cage door slide groove 9 on the transport cage 8 until the two arc-shaped limiting grooves 13 on the lower outer wall of the cage door component 7 correspond to the positions of the rotating protrusion mounting groove 14. At this time, the two rotating blocks 5 are rotated. Since the rotating blocks 5 are fixedly connected to the rotating protrusions 4, the rotating blocks 5 drive the rotating protrusions 4 to rotate within the rotating protrusion mounting groove 14. As the rotating protrusions 4 rotate, their arc-shaped outer wall gradually contacts the inner wall of the arc-shaped limiting groove 13 on the cage door component 7. The first contact achieves initial mechanical limiting. Then, when the rotating protrusion 4 rotates to the set position, the first limiting block groove 10 on the outer wall of the rotating protrusion 4 corresponds to the position of the limiting block 11 in the second limiting block groove 15. Under the elastic force of the return spring 12, the limiting block 11 slides towards the rotating protrusion 4, with one end extending into the first limiting block groove 10. At this time, the limiting block 11 is simultaneously slidably connected with the first limiting block groove 10 and the second limiting block groove 15, thereby locking the rotating protrusion 4 and preventing it from... During transportation, the cage door rotates due to vibration or other reasons, thus completing the double locking of the cage door. Then, when it is necessary to open the cage door, the two pull rods 3 are pulled outward. The pull rods 3 drive the limiting block 11 to slide away from the rotating protrusion 4. The limiting block 11 retracts from the first limiting block groove 10, releasing the locking restriction on the rotating protrusion 4. At this time, the return spring 12 is compressed. Then, the rotating block 5 is rotated in the opposite direction. The rotating block 5 drives the rotating protrusion 4 to rotate, so that the outer wall of the arc surface of the rotating protrusion 4 is aligned with the arc-shaped limiting on the cage door component 7. The inner wall of the groove 13 is disengaged, releasing the restriction on the cage door component 7. Finally, the cage door component 7 is slid upward along the cage door slide 9 to open the cage door and complete the loading and unloading of livestock. During the entire transportation process, the collection box 2 is connected to the trough on the lower surface of the transport cage 8 through the collection box slide 16 on the support base 1, which can collect the feces and other waste produced by the livestock in the transport cage 8 and keep the transportation environment clean. When it is necessary to clean the collection box 2, the collection box 2 can be slid out along the collection box slide 16, which is convenient to operate.
[0028] In the quick-release double locking assembly, the outer arc-shaped wall of the rotating protrusion 4 in the locked state makes close contact with the inner wall of the arc-shaped limiting groove 13 at the lower end of the cage door component 7, forming the first mechanical limit. The fitting characteristics of the arc structure effectively eliminate the gap between the traditional pin and the hole, reducing the shaking amplitude during transportation bumps from the root. At the same time, the limiting block 11 is inserted into the first limiting block groove 10 of the rotating protrusion 4 under the action of the return spring 12, forming the second locking. The rigid limit completely restricts the rotational freedom of the rotating protrusion 4. This double locking mechanism forms redundant protection. Even if the first arc-shaped limit is slightly worn due to long-term use, the second limiting block lock can still ensure that the cage door will not be opened accidentally, effectively avoiding the safety hazards caused by wear of the single pin structure, and eliminating road safety accidents and economic losses caused by livestock falling and escaping.
[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A detachable livestock transport cage door structure, comprising a support base (1), a collection box (2), and a transport cage (8), characterized in that: The transport cage (8) is equipped with a quick-release double locking assembly; The quick-release double locking assembly includes a cage door (7), two protective shells (6), two rotating blocks (5) and two rotating protrusions (4). When the cage door (7) is a flat cage door, the two protective shells (6) are fixedly installed on the outer walls of both sides of the transport cage (8), and the two rotating blocks (5) are rotatably installed on the upper surface of the protective shells (6). The outer walls of the two protective shells (6) are provided with rotating protrusion mounting grooves (14), and the two rotating protrusions (4) are rotatably installed inside the corresponding rotating protrusion mounting grooves (14). Among them, the outer walls of the two protective shells (6) are slidably connected with pull rods (3), the inner walls of the two rotating protrusion mounting grooves (14) are provided with second limiting block grooves (15), the inner walls of the two second limiting block grooves (15) are slidably connected with limiting blocks (11), the outer walls of the two rotating protrusions (4) are provided with first limiting block grooves (10), the upper surface of the transport cage (8) is provided with a cage door sliding groove (9), the outer wall of the cage door component (7) is slidably connected with the inner wall of the cage door sliding groove (9), the lower outer wall of the cage door component (7) is provided with two arc-shaped limiting grooves (13), and the outer walls of the two pull rods (3) are sleeved with reset springs (12).
2. The detachable livestock transport cage door structure according to claim 1, characterized in that: The inner walls of both rotating protrusion mounting slots (14) are arc-shaped; One side of the outer wall of each of the two rotating protrusions (4) is flat.
3. The detachable livestock transport cage door structure according to claim 1, characterized in that: Both of the limiting blocks (11) extend slidably into the interior of the rotating protrusion mounting groove (14) at the end near the first limiting block groove (10) and are respectively slidably connected to the interior of the corresponding second limiting block groove (15).
4. The detachable livestock transport cage door structure according to claim 1, characterized in that: The two rotating blocks (5) extend into the interior of the rotating protrusion mounting groove (14) at the end near the rotating protrusion (4) and are fixedly connected to the upper surface of the corresponding rotating protrusion (4).
5. The detachable livestock transport cage door structure according to claim 1, characterized in that: The ends of the two pull rods (3) near the limiting block (11) slide into the interior of the second limiting block groove (15) and are fixedly connected to the outer wall of the corresponding limiting block (11).
6. The detachable livestock transport cage door structure according to claim 1, characterized in that: When the outer arc surface of the two rotating protrusions (4) contacts the inner wall of the corresponding arc-shaped limiting groove (13), the limiting block (11) is located inside the first limiting block groove (10); The two ends of the two reset springs (12) are fixedly connected to the outer wall of the corresponding limit block (11) and the inner wall of the second limit block groove (15), respectively.
7. The detachable livestock transport cage door structure according to claim 1, characterized in that: The transport cage (8) is fixedly installed on the upper surface of the support base (1); The outer wall of the support base (1) is provided with a collection box groove (16).
8. The detachable livestock transport cage door structure according to claim 1, characterized in that: The outer wall of the collection box (2) is slidably connected to the inside of the collection box groove (16); The sluice gate on the lower surface of the transport cage (8) is connected to the interior of the collection box (2).
9. The detachable livestock transport cage door structure according to claim 1, characterized in that: When the cage door component (7) is a fixed rod cage door (17); The fixed rod cage door (17) is used in conjunction with the transport cage (8).