Container door opening and closing protection device
Through the design of the container door opening and closing protection device, the winding mechanism and differential locking mechanism are used to solve the problem of container cargo pouring, and the stable opening of the box door is achieved, and the occurrence of safety accidents is avoided.
Patent Information
- Application Number
- CN202421142378.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Containers may be affected by external factors during transportation or storage, causing internal cargo to loosen or displace, and then pour out when the door is opened, which may lead to safety accidents.
A container door opening and closing protection device is designed, including a housing, a winding mechanism, a seat belt and a differential locking mechanism. Through components such as hooks and ratchets, the seat belt and a differential locking mechanism are locked when the goods are poured. Stop winding cylinder to prevent the box door from opening too fast.
It effectively prevents the box door from opening too fast, avoids the occurrence of safety accidents, and ensures the stability and safety of the goods when opening the door.
Smart Images
Figure CN222248546U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of container door opening and closing protection, and specifically discloses a container door opening and closing protection device. Background Art
[0002] Containers are large cargo containers with certain strength, rigidity and specifications for turnover. When using containers to transport goods, goods can be loaded directly at the shipper's warehouse and unloaded at the consignee's warehouse. When changing vehicles or ships in the middle of the journey, there is no need to take the goods out of the container and reload them.
[0003] Common container doors use double doors. Double-door containers are equipped with two doors on both sides. The two doors open symmetrically, which is convenient for large-scale entry and exit of goods, safer and easier to maintain balance. Each door is equipped with two locking rods to lock the container door. The container door can be opened and closed by the locking rod. Container doors can be divided into many types according to the material and design, including wooden doors, metal doors, aluminum alloy doors, etc. All-steel materials have a high carbon content and are heavy, but they have high strength, good corrosion resistance and long service life. Steel-aluminum composite materials combine the advantages of steel and aluminum, with light weight and good strength.
[0004] When using containers to transport or store goods, the containers may be affected by external factors, such as impact, vibration, and shaking of waves. These factors may cause the goods inside the container to loosen or shift, causing them to spill when the container door is opened, which may easily lead to safety accidents. Utility Model Content
[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a container door opening and closing protection device to solve the problem that the cargo inside the container is loose or shifted, thereby spilling when the container door is opened, which may easily lead to safety accidents.
[0006] To achieve the above purpose, the technical solution of the utility model is:
[0007] A container door opening and closing protection device includes a shell, a winding mechanism is arranged in the shell, a safety belt is wound on the winding mechanism, a hook is connected to the end of the safety belt, and a differential locking mechanism is arranged in the shell; the differential locking mechanism is connected to the winding mechanism; the differential locking mechanism has a locking state of locking the winding mechanism, and the differential locking mechanism has an unlocking state of unlocking the winding mechanism; the winding mechanism includes two winding drums; the two winding drums are coaxially arranged; each winding drum winds two safety belts; the two safety belts extend outward after passing through the shell; the two safety belts extend outward in opposite directions. When in use, the hooks of the two safety belts on the upper winding drum hook the locking rods on the inner sides of the two doors, and the hooks of the two safety belts on the lower winding drum hook the locking rods on the outer sides of the two doors. When the cargo dumps and the door opens too fast, the differential locking mechanism is used to lock the winding drum of the winding mechanism, and the safety belt is used to prevent the door from continuing to open, so as to avoid safety accidents.
[0008] Preferably, the differential locking mechanism includes ratchets fixedly arranged at the upper and lower ends of the winding drum and a differential rotation assembly; the differential rotation assembly cooperates with the ratchet arrangement on the winding drum at the lower end; the differential rotation assembly can lock the ratchet when rotating at high speed.
[0009] Preferably, the differential rotation assembly includes a pawl; a rotating shaft is fixedly arranged in the middle of the pawl; the rotating shaft is rotatably arranged on the housing; a spring 1 is connected to one end of the pawl; the end of the spring 1 away from the pawl is fixedly arranged on the side wall of the housing; a convex column is fixedly arranged on the other end of the pawl; a rotating block is rotatably arranged at the edge of one of the ratchet wheels; the rotating block can move the convex column when the ratchet wheel rotates at a high speed. When the ratchet wheel rotates at a high speed, the rotating block rotates around the connection between it and the ratchet wheel, moves the convex column, and then drives the pawl to rotate around the rotating shaft, and the teeth on the end of the pawl away from the convex column can engage the ratchet wheel to achieve the locking of the ratchet wheel. The setting of the spring 1 can ensure that when the ratchet wheel rotates at a low speed and the rotating block rotates less, the centrifugal force of the rotating block is insufficient to overcome the elastic force of the spring 1 to move the convex column, thereby ensuring the continued rotation of the ratchet wheel and ensuring the normal opening of the door.
[0010] Preferably, the rotating block comprises a main body; the main body is rotatably arranged on the ratchet; an extension arm is fixedly arranged at one end of the main body; and a shifting block is fixedly arranged at the end of the extension arm. The arrangement of the extension arm and the shifting block enables the rotating block to be eccentrically rotatably arranged on the ratchet, and when the ratchet rotates at a high speed, sufficient centrifugal force can be ensured to overcome the elastic force of the spring to shift the protruding column.
[0011] Preferably, one end of the extension arm away from the shifting block is fixedly connected to a second spring, and one end of the second spring away from the extension arm is fixedly arranged on the ratchet. The arrangement of the second spring can limit the rotation of the rotating block when the ratchet rotates at a low speed, thereby avoiding the shifting of the convex column.
[0012] Preferably, the winding drum includes a cylinder; two winding rods are placed in the cylinder; the safety belt is wound on the winding rods; an opening is provided on the side wall of the cylinder; the safety belt extends after passing through the opening; ratchets are fixedly provided at both upper and lower ends of the cylinder; the ratchet at the upper end is rotatably provided on the shell; a fixed seat is threadedly provided on the middle part of the ratchet at the lower end; and the bottom surface of the fixed seat is rotatably provided on the shell.
[0013] Preferably, the ratchet wheel at the lower end is connected to a spiral spring, and the inner end of the spiral spring is fixedly arranged on the housing. The arrangement of the spiral spring facilitates the resetting of the winding drum.
[0014] Preferably, the material of the safety belt wound on the winding drum at the lower end is inelastic; and the material of the safety belt wound on the winding drum at the upper end is elastic.
[0015] Preferably, the hook comprises a hook body; a movable head is hinged at the end of the hook body; the movable head is connected to the hook body through a spring; a connecting rod is fixedly provided at one end of the hook body away from the movable head; and a radial through hole is radially provided on the connecting rod.
[0016] Preferably, the side wall of the shell is provided with a permanent magnet, so as to facilitate the attachment of the shell to the container door and the attachment of the safety belt.
[0017] The beneficial effects of the utility model are as follows: when in use, the hooks of the two safety belts on the upper winding drum hook the locking rods on the inner sides of the two doors, and the hooks of the two safety belts on the lower winding drum hook the locking rods on the outer sides of the two doors. When the cargo dumps and the door opens too fast, the differential locking mechanism is used to lock the winding drum of the winding mechanism, and the safety belt is used to prevent the door from continuing to open, thereby avoiding safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the partial cutaway structure of the utility model after the hook is removed;
[0021] Figure 3 It is a partially cutaway structural schematic diagram of the winding drum and the differential locking mechanism of the utility model;
[0022] Figure 4 It is a structural schematic diagram of the winding drum and the differential locking mechanism of the utility model;
[0023] Figure 5 It is a structural schematic diagram of the rotating block of the utility model;
[0024] Figure 6 It is a structural schematic diagram of the hook of the utility model.
[0025] Description of reference numerals:
[0026] 1-housing, 2-safety belt, 3-hook, 4-winding drum, 5-ratchet, 6-pawl, 7-rotating shaft, 8-spring one, 9-convex column, 10-rotating block, 11-spring two, 12-volute spring; 301-hook body, 302-movable head, 303-spring three, 304-connecting rod, 305-radial through hole; 401-cylinder, 402-winding rod, 403-opening, 404-fixed seat; 1001-main body, 1002-extension arm, 1003-shift block. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0028] like Figure 1-6 As shown, a container door opening and closing protection device comprises a shell 1, a winding mechanism is arranged in the shell 1, a safety belt 2 is wound on the winding mechanism, a hook 3 is connected to the end of the safety belt 2, and a differential locking mechanism is arranged in the shell 1; the differential locking mechanism is connected to the winding mechanism; the differential locking mechanism has a locking state for locking the winding mechanism, and the differential locking mechanism has an unlocking state for unlocking the winding mechanism; the winding mechanism comprises two winding drums 4; the two winding drums 4 are coaxially arranged; each winding drum 4 winds two safety belts 2; the two safety belts 2 extend outward after passing through the shell 1; the two safety belts 2 extend outward in opposite directions. A permanent magnet is arranged on the side wall of the shell 1 to facilitate the attachment of the shell 1 to the container door and the hanging of the safety belt 2. The hook 3 comprises a hook body 301; a movable head 302 is hinged at the end of the hook body 301; the movable head 302 is connected to the hook body 301 via a spring 303; a connecting rod 304 is fixedly provided at one end of the hook body 301 away from the movable head 302; and the connecting rod 304 is provided with radial through holes 305 along the radial direction.
[0029] In the above arrangement, the differential locking mechanism includes a ratchet 5 fixedly arranged at the upper and lower ends of the winding drum 4 and a differential rotation assembly; the differential rotation assembly is arranged in cooperation with the ratchet 5 on the winding drum 4 at the lower end; the differential rotation assembly can lock the ratchet 5 when rotating at high speed. The differential rotation assembly includes a pawl 6; a rotating shaft 7 is fixedly arranged in the middle of the pawl 6; the rotating shaft 7 is rotatably arranged on the housing 1; a spring 8 is connected to one end of the pawl 6; the end of the spring 8 away from the pawl 6 is fixedly arranged on the side wall of the housing 1; a protrusion 9 is fixedly arranged at the other end of the pawl 6; a rotating block 10 is rotatably arranged at the edge of one of the ratchet wheels 5; the rotating block 10 can move the protrusion 9 when the ratchet wheel 5 rotates at high speed. When the ratchet wheel 5 rotates at high speed, the rotating block 10 rotates around the connection between it and the ratchet wheel 5, moves the protrusion 9, and then drives the pawl 6 to rotate around the rotating shaft 7, and the teeth on the end of the pawl 6 away from the protrusion 9 can engage the ratchet wheel 5 to achieve the locking of the ratchet wheel 5. The setting of spring 18 can ensure that the centrifugal force of the rotating block 10 is not enough to overcome the elastic force of spring 18 to move the protruding column 9 when the ratchet 5 rotates at a low speed and the rotating block 10 rotates slightly, thereby ensuring the continued rotation of the ratchet 5 and the normal opening of the door.
[0030] The rotating block 10 includes a main body 1001; the main body 1001 is rotatably arranged on the ratchet 5; an extension arm 1002 is fixedly arranged at one end of the main body 1001; a shifting block 1003 is fixedly arranged at the end of the extension arm 1002, and a spring 11 is fixedly connected to the end of the extension arm 1002 away from the shifting block 1003; the end of the spring 11 away from the extension arm 1002 is fixedly arranged on the ratchet 5. The arrangement of the extension arm 1002 and the shifting block 1003 can make the rotating block 10 eccentrically rotatably arranged on the ratchet 5, and can ensure that sufficient centrifugal force overcomes the elastic force of the spring 18 to shift the protruding column 9 when the ratchet 5 rotates at a high speed. The arrangement of the spring 11 can limit the rotation of the rotating block 10 when the ratchet 5 rotates at a low speed to avoid shifting the protruding column 9. The winding drum 4 includes a cylinder 401; two winding rods 402 are placed in the cylinder 401; the safety belt 2 is wound on the winding rods 402; an opening 403 is provided on the side wall of the cylinder 401; the safety belt 2 extends after passing through the opening 403; ratchets 5 are fixedly provided at both ends of the cylinder 401; the ratchet 5 at the upper end is rotatably provided on the housing 1; a fixing seat 404 is threadedly provided in the middle of the ratchet 5 at the lower end; the bottom surface of the fixing seat 404 is rotatably provided on the housing 1. The ratchet 5 at the lower end is connected to a spiral spring 12; the inner end of the spiral spring 12 is fixedly provided on the housing 1. The provision of the spiral spring 12 facilitates the resetting of the winding drum 4.
[0031] The material of the safety belt 2 wound on the winding drum 4 at the lower end is inelastic; the material of the safety belt 2 wound on the winding drum 4 at the upper end is elastic. The maximum length of the safety belt 2 on the winding drum 4 at the lower end - the maximum length of the safety belt 2 on the winding drum 4 at the upper end = the distance between the two locking rods of the single-side door. It is ensured that when the door needs to be locked, the safety belt 2 on the upper winding drum 4 and the safety belt 2 on the winding drum 4 at the lower end can play a locking role at the same time, making full use of the safety protection role of the four safety belts 2. When in use, the hooks 3 of the two safety belts 2 on the winding drum 4 at the upper end hook the locking rods on the inner sides of the two doors, and the hooks 3 of the two safety belts 2 on the winding drum 4 at the lower end hook the locking rods on the outer sides of the two doors. When the cargo dumps and the door opens too fast, the differential locking mechanism is used to lock the winding drum 4 of the winding mechanism, and the safety belt 2 is used to prevent the door from continuing to open, avoiding safety accidents.
[0032] Although the utility model is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the utility model, and these modifications or substitutions shall be within the scope of the utility model / any person of ordinary skill in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the utility model, and they shall be within the scope of protection of the utility model. Therefore, the scope of protection of the utility model shall be based on the scope of protection of the claims.
Claims
1. A container door opening and closing protection device, comprising a housing (1), a winding mechanism being arranged in the housing (1), a safety belt (2) being wound on the winding mechanism, and a hook (3) being connected to an end of the safety belt (2), wherein: A differential locking mechanism is arranged in the housing (1); the differential locking mechanism is connected to the winding mechanism; the differential locking mechanism has a locking state in which the winding mechanism is locked, and an unlocking state in which the winding mechanism is unlocked; the winding mechanism comprises two winding drums (4); the two winding drums (4) are coaxially arranged; each winding drum (4) winds two safety belts (2); the two safety belts (2) extend outward after penetrating the housing (1); and the two safety belts (2) extend outward in opposite directions.
2. The container door opening and closing protection device according to claim 1, characterized in that: The differential locking mechanism comprises ratchets (5) fixedly arranged at the upper and lower ends of a winding drum (4) and a differential rotation assembly; the differential rotation assembly is arranged in cooperation with the ratchet (5) on the winding drum (4) at the lower end; and the differential rotation assembly can lock the ratchet (5) when rotating at a high speed.
3. The container door opening and closing protection device according to claim 2, characterized in that: The differential rotation assembly comprises a pawl (6); a rotating shaft (7) is fixedly arranged in the middle of the pawl (6); the rotating shaft (7) is rotatably arranged on the housing (1); one end of the pawl (6) is connected to a spring 1 (8); an end of the spring 1 (8) away from the pawl (6) is fixedly arranged on the side wall of the housing (1); a boss (9) is fixedly arranged on the other end of the pawl (6); a rotating block (10) is rotatably arranged at the edge of one of the ratchet wheels (5); the rotating block (10) can move the boss (9) when the ratchet wheel (5) rotates at a high speed.
4. The container door opening and closing protection device according to claim 3 is characterized in that: The rotating block (10) comprises a main body (1001); the main body (1001) is rotatably arranged on the ratchet wheel (5); an extension arm (1002) is fixedly arranged at one end of the main body (1001); and a shifting block (1003) is fixedly arranged at the end of the extension arm (1002).
5. The container door opening and closing protection device according to claim 4, characterized in that: One end of the extension arm (1002) away from the shifting block (1003) is fixedly connected to a second spring (11); and one end of the second spring (11) away from the extension arm (1002) is fixedly arranged on the ratchet (5).
6. The container door opening and closing protection device according to claim 5, characterized in that: The winding drum (4) comprises a cylinder (401); two winding rods (402) are placed in the cylinder (401); the safety belt (2) is wound on the winding rods (402); an opening (403) is provided on the side wall of the cylinder (401); the safety belt (2) extends after passing through the opening (403); ratchet wheels (5) are fixedly provided at both upper and lower ends of the cylinder (401); the ratchet wheel (5) at the upper end is rotatably provided on the housing (1); a fixing seat (404) is threadedly provided in the middle of the ratchet wheel (5) at the lower end; and the bottom surface of the fixing seat (404) is rotatably provided on the housing (1).
7. The container door opening and closing protection device according to claim 6, characterized in that: The ratchet wheel (5) at the lower end is connected to a spiral spring (12); the inner end of the spiral spring (12) is fixedly arranged on the housing (1).
8. The container door opening and closing protection device according to claim 6, characterized in that: The material of the safety belt (2) wound on the winding drum (4) at the lower end is inelastic; and the material of the safety belt (2) wound on the winding drum (4) at the upper end is elastic.
9. The container door opening and closing protection device according to claim 1, characterized in that: The hook (3) comprises a hook body (301); a movable head (302) is hingedly connected to the end of the hook body (301); the movable head (302) is connected to the hook body (301) via a spring three (303); a connecting rod (304) is fixedly provided at one end of the hook body (301) away from the movable head (302); and a radial through hole (305) is provided along the radial direction of the connecting rod (304).
10. The container door opening and closing protection device according to claim 1, characterized in that: A permanent magnet is arranged on the side wall of the shell (1).