Cargo chain type conveying mechanism

Abstract

The chain type cargo conveying mechanism comprises a machine body, multiple sets of conveying units, limiting units and a locking unit, each conveying unit comprises a triggering assembly, a bearing assembly and a connecting assembly, the bearing assemblies and the connecting assemblies are located on the two sides of the triggering assembly respectively, and the two sets of limiting units are symmetrically arranged on the two sides of the triggering assembly. The limiting unit comprises a supporting part and a limiting part located above the supporting part, the triggering assembly controls the limiting unit to rotate, and then the limiting part limits goods; and the locking unit comprises a locking assembly arranged on the supporting part and two unlocking units fixedly installed on the two sides of the machine body conveying terminal correspondingly, and the locking assembly has a locking function and a rotating function. Through the conveying unit and the limiting unit, precise limiting and flexible protection are combined, and therefore the problem that due to the fact that an existing conveying mechanism is suddenly paused or blocked, goods slide forwards relative to a conveying chain and even rush out of a conveying path is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of goods conveyors, in particular to a goods chain conveyor mechanism. BACKGROUND

[0002] In the field of industrial production and logistics transportation, chain conveyors are widely used in the continuous handling of large goods due to their strong conveying capacity, stable operation, and adaptability to heavy load working conditions. The core working principle is to drive the load surface through the cyclic movement of the chain to realize the linear conveying of goods, which plays a key role in automatic production lines, port freight, warehouse sorting, etc.

[0003] However, in the actual operation process of the chain conveyor, sudden pauses or stalls often occur due to factors such as drive system failure, transmission path obstacles, or emergency braking operations. Since the goods in the conveying process usually have a large mass and inertia, at the moment of sudden stop of the conveyor, the goods will maintain their original movement trend due to inertia, which can easily cause forward sliding or even out-of-path of the goods relative to the conveying chain. This not only may cause damage to the goods themselves, such as collision and deformation of precision components, package damage, etc., but also may cause equipment collision and even personnel safety accidents, posing a serious threat to production safety and continuity. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the problems existing in the prior art, the present application is proposed to solve the technical problem that goods are easily caused to slide forward or even out of the conveying path relative to the conveying chain due to the sudden pause or stall of the existing conveying mechanism.

[0006] To solve the above technical problems, the present application provides the following technical solutions: a goods chain conveyor mechanism, comprising: a machine body, on which a plurality of conveying units connected by chains are arranged; the conveying unit, comprising a trigger assembly, and a load assembly and a connecting assembly located on both sides of the trigger assembly, both the load assembly and the connecting assembly are used for carrying goods; two sets of limiting units, symmetrically arranged at both ends of the trigger assembly, comprising a supporting part and a limiting part above the supporting part, the trigger assembly controls the rotation of the limiting unit, and then the limiting part limits the goods; The locking unit comprises a locking assembly arranged on the supporting part and two sets of unlocking units fixedly arranged on both sides of the body conveying terminal, the locking assembly has a locking function and a rotating function, the locking function is used for locking the rotating relationship between the supporting part and the limiting part, and the limiting part rotates 90 degrees with the supporting part; the rotating function is used for rotating the limiting part by the unlocking unit pushing the locking assembly, and the limiting part reversely rotates relative to the supporting part and is reset to the initial state to avoid the unloading platform.

[0007] As a preferred scheme of the cargo chain conveying mechanism, the trigger assembly comprises a fixed seat fixedly connected to the chain, a fixed groove is formed in the fixed seat, a trapezoidal block is slidably inserted into the fixed groove, the cross section of the trapezoidal block is a right trapezoid, and a plurality of first elastic members are fixedly connected between the fixed groove and the trapezoidal block.

[0008] As a preferred scheme of the cargo chain conveying mechanism, the supporting part comprises a supporting shaft rotatably inserted into the fixed seat, a bevel gear is fixedly sleeved on the supporting shaft, two sets of bevel plates are fixedly installed on the vertical surface of the trapezoidal block, and the bevel plates are in meshing transmission with the bevel gear.

[0009] As a preferred scheme of the cargo chain conveying mechanism, the limiting part comprises a supporting rod rotatably inserted into the supporting shaft and a limiting member, the limiting member comprises a limiting frame fixedly connected to the supporting rod, a plurality of rollers are fixedly installed on the limiting frame, and a plurality of supporting members with balls are fixedly installed on the bottom of the limiting frame.

[0010] As a preferred scheme of the cargo chain conveying mechanism, the limiting unit further comprises a sliding groove, the sliding groove is composed of a first sliding groove formed at the upper end of the supporting shaft and a second sliding groove formed at the bottom of the supporting rod a, the locking assembly comprises a guide rod slidably inserted into the first sliding groove, the end of the guide rod is slidably inserted into the second sliding groove, a second elastic member is fixedly connected between the bottom end of the first sliding groove and the guide rod, a poking member is fixedly installed on the guide rod, a special-shaped groove is formed in the second sliding groove, and the protruding end of the poking member is slidably inserted into the special-shaped groove.

[0011] As a preferred scheme of the cargo chain conveying mechanism, the special-shaped groove is composed of a straight groove and a threaded groove, the direction of the straight groove is the same as the direction of the axis of the supporting shaft, the circumferential extension angle of the threaded groove is 90 degrees, and the included angle between the starting end and the terminal end of the threaded groove in the circumferential direction is 90 degrees.

[0012] As a preferred scheme of the goods chain conveying mechanism, the locking assembly further comprises a connecting seat fixedly sleeved on the supporting shaft, a telescopic rod slidingly inserted into the connecting seat, a fixed block fixedly connected to the telescopic rod, a control rod fixedly connected to one side of the fixed block and having an end fixedly connected to the guide rod, and a third elastic member fixedly installed in the connecting seat and having an end fixedly connected to an end of the telescopic rod.

[0013] As a preferred scheme of the goods chain conveying mechanism, the unlocking unit comprises a fixed rod fixedly installed on the side of the machine body and a push block fixedly connected to the fixed rod and having an inclined surface.

[0014] As a preferred scheme of the goods chain conveying mechanism, one side of the fixed block is provided with an inclined surface, and the inclined surface has the same inclination angle as the inclined surface of the push block.

[0015] As a preferred scheme of the goods chain conveying mechanism, the roller is composed of a roller shaft and an anti-collision protective layer sleeved on the roller shaft, and the anti-collision protective layer is made of rubber.

[0016] The present application has the following advantages: 1. The limiting unit is provided to realize the combination of accurate limiting and flexible protection, the supporting part is driven by the meshing of the bevel gear and the bevel gear plate to realize directional rotation of the limiting part, effective blocking is formed in the forward direction of the goods, and the inertia problem of the goods moving forward when the conveyor suddenly stops is solved; meanwhile, the rubber anti-collision layer of the roller of the limiting part is elastically deformed to buffer the impact, so that damage caused by the rigid collision between the goods and the limiting structure is avoided.

[0017] 2. The locking unit and the unlocking unit are matched to cooperatively ensure the continuity of the unlocking process, the limiting part is reset in advance before the goods arrive at the unloading platform to avoid interference with the unloading platform, ensure that the whole process of "limiting-conveying-unloading" is smooth without jamming, the resetting mechanism is automatically completed by the elastic member without manual intervention, and the smoothness of the cyclic operation of the equipment is ensured.

[0018] 3. The conveying unit is provided to flexibly adapt to diversified goods bearing requirements, the bearing assembly and the connecting assembly are designed differently, so that the conveying unit can not only bear regular size goods alone, but also adapt to super-long goods with a length greater than that of a single conveying unit by connecting a plurality of conveying units, the problem of poor compatibility of the traditional conveying unit for goods size is solved, and the application range of the equipment is improved.

[0019] 4. The triggering linkage of the conveying unit and the limiting unit ensures the reliability of the limiting, the trapezoidal block of the triggering assembly realizes mechanical triggering of the limiting unit by the self weight of the goods, the limiting unit can be driven to act without additional power source, the control logic is simplified, the limiting device can quickly respond after the goods are placed, the manual operation steps are reduced, and the automation degree of the conveying process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them: Figure 1 It is a schematic diagram of the overall structure of the goods chain conveying mechanism of the present application.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the conveying unit provided by the present application; Figure 3 It is a schematic diagram of the partial structure of the triggering assembly provided by the present application; Figure 4 It is a three-dimensional structure diagram of the limiting part provided by the present application; Figure 5 It is a schematic diagram of the cross-sectional structure of the locking assembly provided by the present application; Figure 6 It is a schematic diagram of the cross-sectional structure of the second sliding groove provided by the present application; Figure 7 It is a state diagram of the fixed block about to contact the unlocking unit during the running process provided by the present application; Figure 8 It is a state diagram of the fixed block having contacted the unlocking unit during the running process provided by the present application.

[0022] Explanation of reference signs: 100, machine body; 101, chain; 200, conveying unit; 201, triggering assembly; 201a, fixed seat; 201b, fixed groove; 201c, first elastic member; 201d, trapezoidal block; 201e, bevel gear plate; 202, bearing assembly; 203, connecting assembly; 300, limiting unit; 301, support part; 301a, support shaft; 301b, bevel gear; 301c, limiting plate; 302, limiting part; 302a, support rod; 302b, limiting member; 302b-1, limiting frame; 302b-2, roller; 302b-3, support member; 303, sliding groove; 303a, first sliding groove; 303b, second sliding groove; 303c, irregular groove; 400, Locking unit; 401, Locking assembly; 401a, Connecting seat; 401b, Telescopic rod; 401c, Fixing block; 401d, Control rod; 401e, Guide rod; 401f, Actuating element; 401g, Second elastic element; 401h, Third elastic element; 402, Unlocking unit; 402a, Fixing rod; 402b, Push block. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Example 1 Reference Figure 1 - Figure 8 This embodiment provides a chain conveyor mechanism for goods, including a body 100. The body 100 is provided with multiple sets of conveyor units 200 connected by chains 101. Each set of conveyor units 200 conveys one item. Because the goods are easily affected by the pauses and jams in the chain conveyor, the goods are prone to inertia in their direction of travel, which may cause the goods to collide with the goods or equipment in front, or even tip over. Therefore, two sets of limiting units 300 are provided on the conveyor unit 200. Unlike the low-position limiting blocks / bars on the transmission belt that generally act as barriers between goods, the limiting units 300 can limit the goods and protect them. Even if the goods have the inertia to rush forward due to the pauses and jams in the conveyor during the conveying process, the limiting units 300 can prevent taller goods from tipping over.

[0025] Specifically, the conveying unit 200 includes a triggering component 201 and a carrying component 202 and a connecting component 203 located on both sides of the triggering component 201. Both the carrying component 202 and the connecting component 203 are composed of a transmission belt and a support roller fixedly mounted on the chain 101. The end of the transmission belt is fixedly connected to the triggering component 201. The carrying component 202 is used to carry goods. Since the size of the goods is not uniform, the connecting component 203 is also used to carry goods. However, unlike the carrying component 202, the carrying area of ​​the connecting component 203 is only the range of rotation of the two limiting parts 302 around their axis, and the carrying area of ​​the connecting component 203 is smaller than that of the carrying component 202. If a longer goods are encountered whose length is greater than that of the carrying component 202, the goods will occupy the connecting component 203 of the next set of conveying units 200. At this time, two sets of conveying units 200 convey one goods.

[0026] like Figure 3As shown, the trigger assembly 201 includes a fixed seat 201a fixedly connected to the chain 101, a transmission belt fixedly installed on both sides of the fixed seat 201a, a fixed groove 201b is formed in the fixed seat 201a, a trapezoidal block 201d is slidably inserted into the fixed groove 201b, the cross section of the trapezoidal block 201d is a right trapezoid, a plurality of first elastic members 201c are fixedly connected between the fixed groove 201b and the trapezoidal block 201d, when the goods are pushed onto the conveying unit 200, the goods will press the trapezoidal block 201d, so that the trapezoidal block 201d is lowered into the fixed groove 201b, when the goods are unloaded from the conveying unit 200, the first elastic members 201c push the trapezoidal block 201d to reset.

[0027] The two sets of limiting units 300 are respectively arranged at the two ends of the conveying unit 200, the limiting unit 300 includes a supporting part 301 and a limiting part 302 located above the supporting part 301, the goods are pressed on the trigger assembly 201, and then the two sets of limiting units 300 are controlled to rotate the supporting parts 301 towards each other, the limiting parts 302 of the two sets of limiting units 300 are moved and limit the goods in the moving direction of the goods, avoiding the problem of collision between the goods or the goods sliding out of the conveying path relative to the conveying direction of the chain conveying mechanism.

[0028] Specifically, the supporting part 301 includes a supporting shaft 301a rotatably inserted into the fixed seat 201a, a bevel gear 301b is fixedly sleeved on the supporting shaft 301a, two sets of bevel gear plates 201e are fixedly installed on the vertical surface of the trapezoidal block 201d, and the bevel gear plates 201e are in meshing transmission with the bevel gear 301b, the trapezoidal block 201d pressed by the goods will push the supporting shaft 301a to rotate through the bevel gear 301b in the moving process, and then the supporting shaft 301a drives the limiting part 302 to rotate, and rotates to limit the goods in the forward direction of the goods.

[0029] As shown in Figure 4 The limiting part 302 includes a supporting rod 302a rotatably inserted into the supporting shaft 301a and a limiting member 302b, the supporting rod 302a supports the limiting member 302b to rotate with the supporting shaft 301a, the limiting member 302b limits the goods, the limiting member 302b includes a limiting frame 302b-1 fixedly connected to the supporting rod 302a, a plurality of rollers 302b-2 are fixedly installed on the limiting frame 302b-1, the limiting device is arranged as a frame, which is conducive to reducing the resistance encountered when the limiting assembly moves, the arrangement of the plurality of rollers 302b-2 can not only intercept the goods in a large area, but also reduce the friction area with the goods, a plurality of supporting members 302b-3 with balls are fixedly installed on the bottom of the limiting frame 302b-1, the supporting members 302b-3 support the limiting frame 302b-1 to move smoothly and stably on the connecting assembly 203, and deformation and inclination of the limiting frame 302b-1 are avoided.

[0030] Roller 302b-2 is composed of a roller and a collision protection layer sleeved on the roller. The collision protection layer is made of rubber material. The rubber has excellent elastic deformation capacity. When the goods impact the anti-collision device due to the sudden stop of the conveyor, the rubber collision protection layer can absorb the impact energy by compression deformation, convert the instantaneous impact force into continuous elastic force, greatly reduce the impact force peak between the goods and the limiting frame 302b-1, and avoid structural deformation of the goods or damage of the limiting frame 302b-1 due to hard impact.

[0031] As shown in Figure 1 , Figure 5 and Figure 6 , when the chain conveyor transports goods to the terminal, the limiting part 302 needs to be reset in advance to avoid the limiting frame 302b-1 from impacting the unloading platform after moving with the chain 101. However, before the goods are unloaded from the conveying unit 200, the goods always press the trapezoidal block 201d, so that the supporting shaft 301a cannot rotate reversely to drive the limiting frame 302b-1 to reset. Therefore, the locking unit 400 is arranged on the limiting unit 300. The locking unit 400 temporarily disconnects the limiting part 302 from the fixed connection with the supporting shaft 301a, so that the limiting frame 302b-1 can be reset relative to the supporting shaft 301a in advance.

[0032] The locking unit 400 includes a locking assembly 401 arranged on the supporting part 301 and two sets of unlocking units 402 respectively fixedly installed on both sides of the conveying terminal of the machine body 100. The locking assembly 401 has a locking function and a rotating function. The locking function is used to lock the rotating relationship between the supporting part 301 and the limiting part 302, and the limiting part 302 rotates together with the supporting part 301. The rotating function is used to rotate the limiting part 302 by the unlocking unit 402 pushing the locking assembly 401, so that the limiting part 302 reversely rotates relative to the supporting part 301 and resets to the initial state to avoid the unloading platform.

[0033] The limiting unit 300 further includes a sliding groove 303 composed of a first sliding groove 303a opened at the upper end of the supporting shaft 301a and a second sliding groove 303b opened at the bottom of the supporting rod 302a. The locking assembly 401 includes a guide rod 401e slidingly inserted into the first sliding groove 303a, and the end of the guide rod 401e is slidingly inserted into the second sliding groove 303b. A second elastic member 401g is fixedly connected between the bottom end of the first sliding groove 303a and the guide rod 401e. A poking member 401f is fixedly installed on the guide rod 401e. A special-shaped groove 303c is opened on the second sliding groove 303b. The protruding end of the poking member 401f is slidingly inserted into the special-shaped groove 303c. The special-shaped groove 303c is composed of a straight groove and a threaded groove. The direction of the straight groove is the same as the axis direction of the supporting shaft 301a. The circumferential extension angle of the threaded groove is 90°, and the included angle between the start end and the end end in the circumferential direction is 90°.

[0034] Specifically, the second elastic member 401g supports the guide rod 401e to rise to the uppermost end of the straight slot of the special-shaped slot 303c in which the sliding element 401f is arranged, at this time, the support shaft 301a and the support rod 302a are in a locked state, and the support rod 302a can rotate together with the support shaft 301a, when the guide rod 401e drives the sliding element 401f to slide downward to compress the second elastic member 401g, the sliding element 401f slides along the special-shaped slot 303c, from the straight slot to the terminal end of the threaded slot, thereby realizing that the sliding element 401f drives the support rod 302a to rotate by 90°, so that the whole reverse rotation of the limiting part 302 is realized, the limiting part 302 is parallel to the chain 101, and the limiting part 302 can avoid the unloading platform.

[0035] The locking assembly 401 further comprises a connecting seat 401a fixedly sleeved on the support shaft 301a, the connecting seat 401a supports the telescopic rod 401b to slide, the telescopic rod 401b is slidably arranged on the connecting seat 401a, the telescopic rod 401b supports the up-down sliding of the fixed block 401c, the telescopic rod 401b is fixedly connected with the fixed block 401c, one side of the fixed block 401c is fixedly connected with the control rod 401d, and the end of the control rod 401d is fixedly connected with the guide rod 401e, when the fixed block 401c is pushed downward, the control rod 401d pulls the guide rod 401e downward, the third elastic member 401h is fixedly installed in the connecting seat 401a, and the end of the third elastic member 401h is fixedly connected with the end of the telescopic rod 401b, the third elastic member 401h is a compression spring, when the fixed block 401c is not pushed, the third elastic member 401h pushes the fixed block 401c to reset, and then the control rod 401d pushes the guide rod 401e to rise and reset, the sliding element 401f drives the support rod 302a to rotate through the special-shaped slot 303c, so that the support rod 302a returns to the initial state with the support shaft 301a.

[0036] Specifically, as shown in Figure 1 , Figure 7 - Figure 8 The unlocking unit 402 includes a fixed rod 402a fixedly installed on the side surface of the machine body 100 and a push block 402b fixedly connected with the fixed rod 402a and having an inclined surface, one side of the fixed block 401c is provided with an inclined surface, and the inclination angle of the inclined surface is the same as that of the inclined surface of the push block 402b, when the conveying unit 200 is about to move the unloading platform, the push block 402b will first contact the fixed block 401c, and push the fixed block 401c during the continuous movement of the conveying unit 200, the inclined surface of the fixed block 401c slides along the inclined surface of the push block 402b and is pushed downward.

[0037] Specific working process: the goods on the loading platform are pushed to the machine body 100, the goods move to the bearing assembly 202, the goods press the trapezoidal block 201d, the two sets of bevel gear plates 201e push the two sets of bevel gears 301b to rotate reversely, the support shaft 301a is controlled by the bevel gear 301b to rotate together, and the two sets of limiting parts 302 rotate by 90° to approach the goods to limit the goods.

[0038] When the goods are about to move to the unloading platform, the fixed block 401c first contacts the push block 402b and is blocked by the push block 402b, the fixed block 401c is pushed and falls, the control rod 401d connected with the fixed block 401c pulls the guide rod 401e to fall, the shifting part 401f on the guide rod 401e rotates the support rod 302a through the special-shaped groove 303c, and then the two sets of limiting parts 302 reversely rotate to reset the support part 301 in advance, thereby removing the block of the goods.

[0039] With the movement of the chain 101 to drive the conveying unit 200, after the goods are conveyed to the unloading platform, the trapezoidal block 201d loses the pressing force, the first elastic part 201c is elastically released to push the trapezoidal block 201d to rise and reset, the bevel gear plate 201e pushes the bevel gear 301b to reversely rotate, and the support shaft 301a reversely rotates to reset; at the same time, because the fixed block 401c is away from the push block 402b, the third elastic part 401h is also elastically released, the third elastic part 401h pushes the telescopic rod 401b to rise, the fixed block 401c pushes the guide rod 401e to rise through the control rod 401d, the shifting part 401f on the guide rod 401e slides from the screw groove to the straight groove along the special-shaped groove 303c, that is, the shifting part 401f rotates the support rod 302a to realize the reset of the support rod 302a relative to the support shaft 301a, and the limiting unit 300 returns to the initial state.

[0040] Embodiment two The difference between this embodiment and embodiment one is that this embodiment provides a scheme for adjusting the rhythm of pushing the goods to the machine body 100, specifically, a weight sensor is installed on the outermost support roller of the connecting assembly 203, if the goods on the previous conveying unit 200 are too long and the part exceeding the length of the triggering assembly 201 is pressed on the connecting assembly 203 of the present group, the goods will affect the rotation of the limiting unit 300 of the present group, so the weight sensor will give a warning adjustment prompt to the system after sensing the weight of the goods, and the loading platform will be temporarily stopped to continuously load the present conveying unit 200, the goods will be pushed to the next conveying unit 200, so as to avoid that the goods are too close to each other to cause the limiting unit 300 to fail to function.

[0041] As Figure 2As shown, the two sets of limiting units 300 are also fixedly connected with a limiting plate 301c, and the distance between the two sets of limiting units 300 is the maximum length limit of the goods. When the goods are pushed onto the conveying unit 200 by the loading platform, the goods will not exceed the limit of the limiting plate 301c, which helps the two sets of limiting units 300 to realize 90° rotation, thereby limiting and protecting the goods. A plurality of clamping grooves are formed in the limiting plate 301c, so that when the limiting frame 302b-1 is completely rotated above the limiting plate 301c, the supporting piece 302b-3 can be inserted into the clamping groove.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. 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, which should be covered in the scope of the claims of the present application.

Claims

1. A chain conveyor mechanism for goods, characterized in that, include: The machine body (100) is provided with multiple sets of conveyor units (200) connected by chains. The conveying unit (200) includes a triggering component (201) and a carrying component (202) and a connecting component (203) located on both sides of the triggering component (201), the carrying component (202) and the connecting component (203) being used to carry goods; Two sets of limiting units (300) are symmetrically arranged at both ends of the triggering component (201). Each set includes a support part and a limiting part (302) located above the support part (301). The triggering component (201) controls the limiting unit (300) to rotate, thereby causing the limiting part (302) to limit the goods. The locking unit (400) includes a locking component (401) disposed on the support (301) and two sets of unlocking units (402) respectively fixedly installed on both sides of the conveying terminal of the body (100). The locking component (401) has a locking function and a rotation function. The locking function is used to lock the rotational relationship between the support (301) and the limiting part (302), and the limiting part (302) rotates together with the support (301). The rotation function is used for the unlocking unit (402) to push the locking component (401) to rotate the limiting part (302), and the limiting part (302) rotates in the opposite direction relative to the support (301) to reset itself to the initial state to avoid the unloading platform.

2. The chain conveyor mechanism for goods according to claim 1, characterized in that, The triggering component (201) includes a fixed seat (201a) fixedly connected to the chain. A fixed groove (201b) is provided on the fixed seat (201a). A trapezoidal block (201d) is slidably inserted into the fixed groove (201b). The cross section of the trapezoidal block (201d) is a right trapezoid. A plurality of first elastic elements (201c) are fixedly connected between the fixed groove (201b) and the trapezoidal block (201d).

3. The chain conveyor mechanism for goods according to claim 1, characterized in that, The support part (301) includes a support shaft (301a) rotatably inserted into the fixed base (201a), a helical gear (301b) fixedly sleeved on the support shaft (301a), and two sets of helical gear plates (201e) fixedly installed on the vertical surface of the trapezoidal block (201d), and the helical gear plates (201e) mesh with the helical gear (301b) for transmission.

4. A chain conveyor mechanism for goods according to claim 3, characterized in that, The limiting part (302) includes a support rod (302a) rotatably inserted on the support shaft (301a) and a limiting member (302b). The limiting member (302b) includes a limiting frame (302b-1) fixedly connected to the support rod (302a). Multiple rollers (302b-2) are fixedly installed on the limiting frame (302b-1). Multiple support members (302b-3) with balls are fixedly installed at the bottom of the limiting frame (302b-1).

5. A chain conveyor mechanism for goods according to claim 1, characterized in that, The limiting unit (300) further includes a sliding groove (303), which is composed of a first sliding groove (303a) opened at the upper end of the support shaft (301a) and a second sliding groove (303b) opened at the bottom of the support rod (302a). The locking assembly (401) includes a guide rod (401e) slidably inserted in the first sliding groove (303a), and the end of the guide rod (401e) is slidably inserted in the second sliding groove (303b). A second elastic member (401g) is fixedly connected between the bottom end of the first sliding groove (303a) and the guide rod (401e). A toggle member (401f) is fixedly installed on the guide rod (401e). A shaped groove (303c) is opened on the second sliding groove (303b), and the protruding end of the toggle member (401f) is slidably inserted in the shaped groove (303c).

6. A chain conveyor mechanism for goods according to claim 5, characterized in that, The irregular groove (303c) consists of a straight groove and a threaded groove. The straight groove is oriented in the same direction as the axis of the support shaft (301a). The circumferential extension angle of the threaded groove is 90°, and the angle between its starting end and ending end in the circumferential direction is 90°.

7. A chain conveyor mechanism for goods according to claim 1, characterized in that, The locking assembly (401) further includes a connecting seat (401a) fixedly sleeved on the support shaft (301a), a telescopic rod (401b) slidably inserted on the connecting seat (401a), a fixing block (401c) fixedly connected on the telescopic rod (401b), a control rod (401d) fixedly connected to one side of the fixing block (401c), and the end of the control rod (401d) fixedly connected to the guide rod (401e). A third elastic element (401h) is fixedly installed inside the connecting seat (401a), and the end of the third elastic element (401h) is fixedly connected to the end of the telescopic rod (401b).

8. A chain conveyor mechanism for goods according to claim 1, characterized in that, The unlocking unit (402) includes a fixed rod (402a) fixedly installed on the side of the body (100) and a push block (402b) fixedly connected to the fixed rod (402a) and having an inclined surface.

9. A chain conveyor mechanism for goods according to claim 7, characterized in that, The fixed block (401c) has an inclined surface on one side, and the inclined surface has the same inclination angle as the inclined side of the push block (402b).

10. A chain conveyor mechanism for goods according to claim 4, characterized in that, The roller (302b-2) consists of a roller and an anti-collision protective layer sleeved on the roller. The anti-collision protective layer is made of rubber.

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