CN217409540U - Self-locking mechanism of conveyor and conveying system - Google Patents

Abstract

The utility model is suitable for a medical instrument's technical field discloses a self-locking mechanism and conveying system of conveyer. The utility model provides a self-locking mechanism of a conveyor, which comprises a shell and a thumb wheel which is rotatably arranged on the shell, wherein the thumb wheel drives a conveying device to convey an object to be conveyed; a self-locking structure is arranged between the shifting wheel and the conveying device, and comprises a worm and a worm wheel meshed with the worm; the worm wheel drives the conveying device to move. The guide wire can be prevented from falling back due to resistance in the process of conveying the guide wire, so that the conveying effect is better.

Description

Self-locking mechanism of conveyor and conveying system

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of medical equipment, in particular to self-locking mechanism and conveying system of conveyer.

[ background of the invention ]

The interventional operation has small trauma and less invasiveness to human bodies, is a medical technology which is rapidly developed and popularized in recent years, and generally needs a special conveying system to convey medical instruments, implantation instruments and the like to a diseased region.

The existing guide wire conveying system is not provided with a self-locking mechanism, and the guide wire can retreat when meeting resistance or blood vessel bifurcation in a body, so that the conveying and releasing precision of the guide wire can be influenced.

[ Utility model ] content

An object of the utility model is to overcome above-mentioned prior art not enough, provide a self-locking mechanism and conveying system of conveyer, through the self-locking mechanism who sets up worm gear, it aims at solving among the prior art and meets the technical problem that the resistance can fall back the influence and carry in the use seal wire transportation process.

In order to achieve the purpose, the utility model provides a self-locking mechanism of a conveyor, which comprises a shell and a shifting wheel which is rotatably arranged on the shell, wherein the shifting wheel drives a conveying device to convey an object to be conveyed; a self-locking structure is arranged between the shifting wheel and the conveying device, and comprises a worm and a worm wheel meshed with the worm; the worm wheel drives the conveying device to move.

Preferably, the worm gear and the conveying device are in transmission through a plurality of cylindrical gears.

Preferably, the number of the cylindrical gears is plural.

Preferably, the worm wheel is connected with the conveying device through a reversing mechanism.

Preferably, the reversing mechanism comprises a first bevel gear concentrically mounted with the worm gear, a second bevel gear meshed with the first bevel gear, a third bevel gear coaxially mounted with the second bevel gear, and a fourth bevel gear meshed with the third bevel gear, and the fourth bevel gear is connected with the conveying device.

A conveying system uses the self-locking mechanism of the conveyor.

Compared with the prior art, the utility model provides a pair of conveying system's beneficial effect does:

1. through setting up a plurality of thumb wheels, can control different transport speed at transport or back up in-process, the security is higher.

2. Through the self-locking structure that has increased worm gear, when not rotating the thumb wheel or meet the resistance in transportation process, action wheel and follow driving wheel can not the antiport to make the seal wire withdraw.

3. Through the resistance device who sets up, the atress condition of the transport of discovery seal wire that can be more audio-visual, the atress condition of rotational speed and seal wire can be observed through the position of the sliding block that extends the casing.

4. Through set up the cam on the casing, when the casing closed, the cam promoted the slider, made the driven pinch roller be close to the initiative pinch roller and pushed down the seal wire, increased and carried stability.

5. The guide wire conveying precision is higher through the self-locking structure, and the conveying effect is better.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a variable speed conveyor with a fast structure of a single active pinch roller according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the variable speed conveyor with a slow speed structure of a single active pinch roller according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a variable speed conveyor with a fast structure of a plurality of active pinch rollers according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a variable speed conveyor with a slow speed structure and a plurality of active pinch rollers according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a variable speed conveyor with a rapid structure of resistance according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a variable speed conveyor with a slow speed structure and a resistance function according to an embodiment of the present invention.

Fig. 7 is a schematic structural view of the variable speed conveyor with a slow speed structure in which the resistance function is retreated according to the embodiment of the present invention.

Fig. 8 is a schematic side view of a variable speed conveyor according to an embodiment of the present invention with its lid closed.

Fig. 9 is a schematic side view of the variable speed conveyor according to the embodiment of the present invention with its lid opened.

Fig. 10 is a schematic view of a first fast structure of the self-locking function according to the embodiment of the present invention.

Fig. 11 is a schematic view of a slow structure with a first self-locking function according to an embodiment of the present invention.

Fig. 12 is a schematic view of a second fast structure with a self-locking function according to an embodiment of the present invention.

Fig. 13 is a schematic view of a slow structure with a second self-locking function according to an embodiment of the present invention.

Fig. 14 is a schematic view of a third fast structure with self-locking function according to the embodiment of the present invention.

Fig. 15 is a schematic view of a slow structure with a third self-locking function according to the embodiment of the present invention.

Fig. 16 is a schematic structural view of a first self-locking mechanism according to an embodiment of the present invention.

In the figure: 1. a housing; 11. a groove; 12. a cover is turned; 121. briquetting; 122. a cam; 13. a slider; 2. A driving wheel; 3. a driven wheel; 4. a conveying device; 41. an active pinch roller; 42. a driven pinch roller; 43. a pinch roller gear; 44. an intermediate gear; 5. a self-locking mechanism; 51. a worm; 52. a turbine; 53. a spur gear; 54. A drive gear set; 55. a ratchet wheel self-locking structure; 551. a fluted disc; 552. adjusting the handle; 553. a locking part; 554. clamping a pin; 555. a circular arc; 556. rotating the rod; 557. an adjustment section; 558. an arc adjustment section; 56. A first gear; 57. a second gear; 58. a reversing mechanism; 581. a first bevel gear; 582. a second bevel gear; 583. a third bevel gear; 584. a fourth helical gear; 6. a resistance device; 61. a spring; 62. A slider; 7. an object to be conveyed; 8. a thumb wheel; 9. a hemostatic valve.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is usually placed in when used, and are only for convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1 and 2, an embodiment of the present invention provides a variable speed conveyor, including a housing 1, a dial wheel 8 rotatably disposed on the housing 1, and a speed changing device disposed in the housing 1. The number of the dial wheels 8 is at least two, the speed change device comprises a driving wheel 2 and driven wheels 3 meshed with the driving wheel 2, each dial wheel 8 is provided with one driving wheel 2, and the driving wheels 2 and the driven wheels 3 are meshed one by one to form different gear ratios. The driven wheel 3 drives a conveying device 4 to convey an object 7 to be conveyed, and the object 7 to be conveyed is a guide wire, a sheath tube and a microcatheter.

In particular, the housing 1 may be a handle for transporting the object to be transported. Wherein the object to be delivered can be a guide wire, a sheath and a microcatheter. The handle can be cylindric or cuboid, also can be from the centre to the slowly grow passageway of placing the seal wire of both sides for straight, conveniently places the seal wire. The two thumb wheels 8 are arranged on the left side and the right side of the handle and are respectively a fast thumb wheel and a slow thumb wheel.

Referring to fig. 1 and 2, in an alternative embodiment, the conveying device 4 includes a driving pressure wheel 41 driven by the driven wheel 3 and a driven pressure wheel 42 rotatably disposed in the housing 1, and the object to be conveyed is disposed between the driving pressure wheel 41 and the driven pressure wheel 42. The driving pinch roller 41 is one, and a pinch roller gear 43 driven by the driven wheel 3 is connected to the driving pinch roller 41.

Specifically, FIG. 1 is an internal schematic view of the thumbwheel. The dial wheel 8 is concentrically connected with a large driving wheel 2, the large driving wheel 2 is meshed with a small driven wheel 3, under the condition that the linear speeds of the two gears are the same, the angular speed of the small gear is larger, and the conveying speed of the large angular speed conveying device 4 is high. The driving wheel 2 and the driven wheel 3 are both fixed on the shell 1, and the driving wheel 2 and the driven wheel 3 are fixed through a fixing rod so as to be always kept in a meshed state. The guide wire is placed in the shell 1, and the driving pressure wheel 41 and the driven pressure wheel 42 press two sides of the guide wire. The small driven wheel 3 drives the pinch wheel gear 43 to rotate, the pinch wheel gear 43 and the driving pinch wheel 41 are concentrically arranged and rotate together, and the driving pinch wheel 41 drives the guide wire and the driven pinch wheel 42 to rotate together. The pinch roller gear 43 is driven by the driven wheel 3, and it should not be understood that the pinch roller gear and the driven wheel are directly contacted, but may be driven by a self-locking mechanism, and the specific self-locking mechanism will be described in the following embodiments. The driven wheel 3 is not to be understood as a single gear, but may be a transmission mechanism that can achieve an increase in angular velocity.

Fig. 2 is a schematic view of the internal structure of the slow thumb wheel. The dial wheel 8 is concentrically connected with a small driving wheel 2, the driving wheel 2 is meshed with a large driven wheel 3, and under the condition that the linear speeds are equal, the angular speed of the large driven wheel 3 is small, and the conveying speed of the small angular speed conveying device 4 is slow. The guide wire is placed in the shell 1, and the driving pinch roller 41 and the driven pinch roller 42 press two sides of the guide wire. The small driven wheel 3 drives the pinch wheel gear 43 to rotate, the pinch wheel gear 43 and the driving pinch wheel 41 are concentrically arranged and rotate together, and the driving pinch wheel 41 drives the guide wire and the driven pinch wheel 42 to rotate together. The pinch roller gear 43 is driven by the driven wheel 3, and it should not be understood that the pinch roller gear and the driven wheel are directly contacted, but may be driven by a self-locking mechanism, and the specific self-locking mechanism will be described in the following embodiments. The driven wheel 3 is not simply understood to be a single gear, but may be a transmission mechanism that can achieve a reduction in angular velocity.

The slow wheel and the fast wheel of the above example are a good embodiment and should not be limited to a specific structure as long as both the fast mechanism and the slow mechanism achieve different conveying speeds of the conveying device 4.

Referring to fig. 3 and 4, in an alternative embodiment, the number of the driving rollers 41 is multiple, preferably three, each driving roller 41 is provided with a roller gear 43, the roller gears 43 are connected through an intermediate gear 44, and one driving roller 41 is driven by the driven roller 3.

Fig. 3 is an internal schematic view of the jog dial. Fig. 4 is a schematic view of the internal structure of the slow thumb wheel. The arrangement of fig. 3 and 4 is modified in the conveying device 4 with respect to the arrangement of fig. 1 and 2. The number of the active pressing wheels 41 is 3, and the pressing wheel gears 43 correspond to the active pressing wheels 41 one by one. The adjacent pinch roller gears 43 are driven by an intermediate gear 44. The conveying effect of the plurality of active pressing wheels 41 is better. The driving pressure wheels 41 and the driven pressure wheels 42 clamp the guide wires in a one-to-one correspondence manner. The diameter of the intermediate gear 44 is smaller than that of the pinch roller gear 43, and the small gear drives the large gear more labor-saving.

Example two:

in addition to the first embodiment, in order to more intuitively sense the delivery condition of the guide wire, a resistance device 6 is further disposed in the housing 1, as shown in fig. 5, 6 and 7, the resistance device 6 comprises a spring 61 and a sliding block 62 connected with the spring 61, the sliding block 62 partially extends out of the housing 1, and the sliding block 62 is connected with the delivery device 4. A haemostatic valve 9 is connected to the left side of the housing 1. The sliding block 62 is connected with the active pinch roller 41, the right end of the spring 61 is fixed with the shell 1, and the left end is connected with the sliding block 62. A space for sliding the slide block 62 is provided in the housing 1. The entire transport device 4 is arranged in the slide block 62, moving together with it.

The driving wheel 2 is connected with the shell 1, the driving pressure wheel 41 at the farthest end is connected with the sliding block 62, and the driving wheel 2 and the driving pressure wheel 41 at the farthest end are respectively connected with the driven wheel 3 through connecting rods. The distance between the central points of the driving wheel 2 and the driven wheel 3 is constant, so that the driving wheel 2 and the driven wheel 3 are always in a meshed state, the distance between the driven wheel 3 and the central point of the driving pressure wheel 41 at the farthest end is constant, and the driven wheel 3 can always drive the conveying device 4 to convey the guide wire. The connecting rod can be fixed on the driving wheel 2, the driving pinch roller 41 and the driven wheel 3 through bearings and can rotate in the sliding process of the sliding block 62, but the distance between the driven wheel 3 and the driving pinch roller 41 at the farthest end and the distance between the driving wheel 2 and the driven wheel 3 are kept constant.

The bottom of the sliding block 62 may be curved, and the sliding of the sliding block 62 also moves along the curve. The guide wire is held at all times during the movement (see fig. 5). The bottom of the sliding block 62 may be a straight track, and the sliding of the sliding block 62 also moves along the straight track. The guide wire is held at all times during the movement (see fig. 10).

The poking wheel 8 is poked, so that the friction force between the guide wire and the conveying roller is constant in the conveying process that the guide wire enters the body from the far end and is uniformly stressed. The compression force experienced by the spring 61 is such that the length of compression of the spring is constant (see figure 5). When the guide wire is subjected to resistance, the pinch roller and the guide wire slip or tend to slip, the compressed length of the spring 61 decreases, and the portion of the slide block 62 exposed from the housing 1 moves proximally (see fig. 7). The operator may change to a slow mechanism to drive the guidewire or look at the situation and then decide not to drive the guidewire. The physician so operating can better choose a slow and fast mechanism, safer during the delivery of the guidewire.

Example three:

a self-locking mechanism 5 is arranged between the driven wheel 3 and the conveying device 4 in the first embodiment or the second embodiment. The self-locking mechanism 5 has various types, and under the condition that the dial wheel 8 is not rotated or the guide wire is subjected to resistance, the self-locking mechanism 5 keeps the pinch roller still and cannot rotate reversely to cause the guide wire to deviate from the original position.

Referring to fig. 12 and 13, in an alternative embodiment, the self-locking mechanism includes a worm 51 mounted on the driven wheel 3 and a worm wheel 52 mounted on the conveying device 4, and the worm 51 and the worm wheel 52 are engaged. The driven wheel 3 may consist of one or more gear sets. The rightmost driven wheel 3 and the worm 51 are concentrically arranged, the driven wheel 3 and the worm 51 rotate together, and the worm 51 drives the worm wheel 52 to rotate. Worm gear 52 cooperates with the left-most pinch wheel gear 43 through a plurality of cylindrical gears 53. Preferably, more than two straight cylindrical gears 53 are provided, so that the distance between the worm gear 52 and the pressing wheel (including the driving pressing wheel 41 and the driven pressing wheel 42) and the distance between the pressing wheel gears 43 are increased, and interference in the power transmission process is prevented. The leftmost spur gear 53 and the worm gear 52 are concentrically installed to rotate together. The size of the straight cylindrical gear 53 is equal to that of the intermediate gear, so that the transmission effect is better, the transmission speed is prevented from being changed all the time, and the service life of the gear is shortened. When the worm wheel 52 rotates, the driving pressure wheel 41 is driven to rotate together to convey the guide wire.

In order to adapt to the conveying device 4 with different installation directions, the cylindrical gear 53 of the self-locking structure can be replaced by a reversing mechanism 58, and referring to fig. 14 and 15, the reversing mechanism 58 comprises a first bevel gear 581 concentrically installed with the worm gear 52, a second bevel gear 582 meshed with the first bevel gear 581, a third bevel gear 583 coaxially installed with the second bevel gear 582 and a fourth bevel gear 584 meshed with the third bevel gear 583. The fourth beveled gear 584 is attached to the conveyor 4 and may be mounted concentric with the leftmost drive roller 41.

Specifically, the worm 51 drives the worm wheel 52 to rotate in the horizontal direction, the first bevel gear 581 and the worm wheel 52 rotate in the horizontal direction together, the second bevel gear 582 rotates in the vertical direction, the second bevel gear 582 drives the third bevel gear 583 to rotate in the vertical direction, the fourth bevel gear 584 reverses and rotates in the horizontal direction, and the driving pinch roller 41 rotates in the horizontal direction along with the fourth bevel gear 584 to convey the guide wire.

Another self-locking mechanism (ratchet self-locking), referring to fig. 10, 11 and 16, self-locking is achieved by a ratchet self-locking mechanism 55. The driven wheel 3 and the conveying device 4 are driven by a transmission gear set 54, and the ratchet wheel self-locking structure 55 realizes self-locking by controlling the transmission gear set 54. The drive gear set 54 can have a variety of configurations. Drive gear set 54 may have only one gear, the left side engaging driven wheel 3 and the right side engaging pinch wheel gear 43 (not shown in this case). The ratchet self-locking mechanism 55 achieves self-locking by controlling the gear.

The drive gear set 54 may be formed of a plurality of gears. This will now be explained in more detail by way of an example of two gears. A first gear 56 is concentrically mounted on the driven wheel 3, the first gear 56 rotating with the driven wheel 3. The first gear 56 rotates a second gear 57. The first gear 56 and the second gear 57 are equal in size, keeping the angular velocities equal. The second gear 57 rotates the conveyor 4. The second gear 57 is connected with the ratchet self-locking structure 55. The ratchet self-locking mechanism 55 includes a toothed plate 551 and a locking mechanism. Toothed plate 551 is concentrically attached to second gear 57 and toothed plate 551 rotates with second gear 57. The locking mechanism includes an adjustment handle 552 and a locking portion 553 controlled by the adjustment handle 552, the locking portion 553 has an inverted V shape, and an upper end of the locking portion 553 is rotatably attached to the housing 1. The two sides of the bottom of the locking portion 553 are symmetrically provided with a locking foot 554, the locking foot 554 extends toward the middle of the locking portion 553, the left locking foot 554 is locked in the fluted disc 551 to prevent the fluted disc 551 from rotating clockwise, and the right locking foot 554 is locked in the fluted disc 551 to prevent the fluted disc 551 from rotating counterclockwise. An arc 555 is arranged above the clamping foot 554, and when the clamping foot 554 at the left side is clamped in the fluted disc 551, the anticlockwise rotation is not influenced. Right latch 554 snaps into toothed plate 551 such that circular arc 555 allows toothed plate 551 to rotate clockwise without interference when latch 554 is switched. The adjustment handle 552 includes a rotating lever 556, one end of the rotating lever 556 is disposed in the stopper 553, and the other end extends out of the housing 1. An adjusting part 557 is arranged at one end extending out of the shell 1. An arc adjustment portion 558 is provided at one end provided in the locking portion 553. The rotation shaft 556 is located in the locking portion 553. The arc adjustment unit 558 is rotated by the adjustment unit 557, thereby adjusting the engagement unit 553. The arc adjustment part 558 rotates clockwise, and the clamping foot 554 at the right side is clamped into the fluted disc 551; arc adjustment portion 558 rotates counterclockwise and left latch leg 554 snaps into toothed plate 551.

The adjustment portion 557 may be formed in two gears or may not be limited to the gear. Generally, for convenience of operation, the adjusting portion 557 is shifted to the rightmost side and is clamped by the clamping structure of the housing 1, and the right clamping leg 554 is clamped into the toothed disc 551 for self-locking (not shown in the figure). The adjusting portion 557 is shifted to the leftmost side and is clamped by the clamping structure of the housing 1, and the left clamping leg 554 is clamped into the toothed disc 551 for self-locking (as shown in fig. 1).

Example four:

in order to better disassemble, assemble and transport the guide wire, the improvement is carried out on the basis of the embodiments 1-3.

Referring to fig. 5, in an alternative embodiment, a recess 11 for placing the object to be transported is provided in the housing 1. The groove 11 is elongated from left to right. The guide wire 11 is placed in the groove 11 for better transportation. The groove 11 is further provided with a plurality of gaps, so that the driving pinch roller 41 and the driven pinch roller 42 can conveniently enter from the gaps to press the guide wires.

Referring to fig. 8 and 9, in an alternative embodiment, a flip 12 is provided on the housing 1, and a pressing piece 121 for pressing the belt material into the pocket 11 is provided on the flip 12. The flip 12 can be opened from the side, and after the flip 12 is closed, a pressing block 121 on the flip 12 seals the opening of the groove 11 and can fix the guide wire in order to prevent the guide wire from being separated from the groove 11 during the conveying process. The housing 1 may be made transparent to facilitate external observation of the internal conditions.

Referring to fig. 6, 8 and 9, in an alternative embodiment, a sliding block 13 is provided on the housing 1, and the driven pressure wheel 42 is provided on the sliding block 13. The flip 12 is provided with a cam 122, and in the process of closing the flip 12, the cam 122 pushes the driven pressure roller 42 to move toward the direction close to the driving pressure roller 41. In the process of opening the flip 12, the slider 13 drives the driven pinch roller 42 to be away from the driving pinch roller 41, the distance between the driven pinch roller 42 and the driving pinch roller 41 is increased, and a guide wire is better placed in the groove 11. When the flip 12 is closed, the cam 122 pushes the slider 13, so that the driven pressure wheel 42 approaches the driving pressure wheel 41 and presses the guide wire, and the pressing block 121 presses the guide wire to a corresponding position before the driven pressure wheel 42 presses the guide wire. This allows for better delivery of the guidewire and prevents the guidewire from shifting too far, resulting in poor delivery.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims (6)

1. A self-locking mechanism of a conveyor comprises a shell (1) and a shifting wheel (8) which is rotatably arranged on the shell (1), wherein the shifting wheel (8) drives a conveying device (4) to convey an object to be conveyed; the method is characterized in that: a self-locking structure (5) is arranged between the thumb wheel (8) and the conveying device (4), and the self-locking structure (5) comprises a worm (51) and a worm wheel (52) meshed with the worm (51); the worm wheel (52) drives the conveying device (4) to move.

2. A self-locking mechanism for a conveyor as in claim 1 wherein: the worm wheel (52) and the conveying device (4) are in transmission through a plurality of cylindrical gears (53).

3. A self-locking mechanism for a conveyor as in claim 2 wherein: the cylindrical gears (53) are multiple.

4. A self-locking mechanism for a conveyor as in claim 1 wherein: the worm wheel (52) is connected with the conveying device (4) through a reversing mechanism (58).

5. The self-locking mechanism of a conveyor as in claim 4 wherein: the reversing mechanism (58) comprises a first bevel gear (581) which is concentrically arranged with the worm gear (52), a second bevel gear (582) which is meshed with the first bevel gear (581), a third bevel gear (583) which is coaxially arranged with the second bevel gear (582), and a fourth bevel gear (584) which is meshed with the third bevel gear (583), wherein the fourth bevel gear (584) is connected with the conveying device (4).

6. A conveyor system, characterized by: a self-locking mechanism for use with a conveyor as claimed in any one of claims 1 to 5.

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