Belt deviation protection device

Abstract

The present invention provides a belt deviation protection device, which relates to the field of belt deviation protection. The scheme adopted is: comprising a deviation switch, the deviation switch is electrically connected to a conveyor belt control terminal, the deviation switch comprises a trigger rod and a shell, a distance measuring device is provided on the deviation switch, the distance measuring device can detect the distance between the trigger rod and the conveyor belt, the deviation switch is rotatably mounted on a fixed disk, the fixed disk is coaxially arranged with the shell, a rotating assembly is provided on the fixed disk, the rotating assembly is connected to the shell, a scale is provided on the fixed disk, the angle between the trigger rod and the vertical direction can be read through the scale, the fixed disk is connected to a lifting device, the lifting device comprises a base, and the base is used to connect with a conveyor belt chassis. The present invention can ensure that the angle of the trigger rod of the deviation switch installation shaft and the distance from the conveyor belt meet the requirements, ensure high installation accuracy, and prevent misjudgment.

Description

Technical Field

[0001] The invention relates to the field of belt deviation protection, and in particular to a belt deviation protection device. Background Art

[0002] The belt on the underground belt conveyor often deviates due to the change of tension force at various places after transporting materials. The belt deviation will cause belt wear and even equipment damage. In order to prevent serious consequences caused by belt deviation, an early warning or shutdown should be issued after the belt deviation exceeds a certain degree. Therefore, a deviation switch is often installed in pairs on the underground belt conveyor for deviation protection. The deviation switch includes a trigger rod. The deviation switch generally adopts a two-level deviation switch, that is, when the swing angle of the trigger rod is 25°, the control terminal is notified to issue an early warning, and when the swing angle of the trigger rod is 35°, the control terminal is notified to shut down. In order to avoid false operation, the installation position and angle of the deviation switch are relatively high, including the following requirements: the angle between the trigger rod and the vertical direction is 29°~31°, and the distance between the 1 / 2~1 / 3 position of the trigger rod and the edge of the conveyor belt is 50~100mm. However, during manual operation and installation, since it is based on experience or visual inspection, the above requirements are often not met, resulting in misjudgment of the two-level deviation switch, which seriously affects the transportation production efficiency.

[0003] Therefore, in view of the current status of the above-mentioned prior art, developing a belt deviation protection device is an urgent problem to be solved. Summary of the invention

[0004] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a belt deviation protection device, which can ensure that the angle of the trigger rod of the deviation switch installation shaft and the distance from the conveyor belt meet the requirements, ensure high installation accuracy, and prevent misjudgment.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a belt deviation protection device, including a deviation switch, the deviation switch is electrically connected to the conveyor belt control terminal, the deviation switch includes a trigger rod and a shell, the deviation switch is provided with a distance measuring device, the distance measuring device can detect the distance between the trigger rod and the conveyor belt, the deviation switch is rotatably mounted on a fixed disk, the fixed disk is coaxially arranged with the shell, a rotating component is provided on the fixed disk, the rotating component is connected to the shell, a scale is provided on the fixed disk, the angle between the trigger rod and the vertical direction can be read through the scale, the fixed disk is connected with a lifting device, the lifting device includes a base, and the base is used to connect with the conveyor belt chassis. The angle and position of the deviation switch adjustment can be accurately obtained through the distance measuring device and the scale, ensuring a high installation accuracy and preventing misjudgment.

[0006] Furthermore, the rotating assembly includes a rotating shaft, which is rotatably connected to the fixed disk, a driving disk is provided at one end of the rotating shaft, the driving disk can move along the rotating shaft and can be locked, an outer gear ring is provided on the circumferential surface of the driving disk, an inner gear ring matching the outer gear ring is provided on the fixed disk, the inner gear ring, the rotating shaft and the fixed disk are coaxially arranged, a rack is movably provided on the fixed disk, the rack can mesh with the outer gear ring, one end of the rack meshes with a gear, the gear is arranged on the output shaft of the driving motor, and the other end of the rotating shaft is connected to the housing. The rotation drive and locking of the deviation switch can be realized by changing the position of the outer gear ring, preventing the deviation switch from rotating and failing to ensure the tilt angle, and the structure is simple and compact.

[0007] Further, the driving disk is provided with a positioning sleeve, a thread 1 is provided on the circumferential surface of the positioning sleeve, four contraction grooves are provided on the circumferential surface of the positioning sleeve, the extension direction of the contraction groove is parallel to the axis of the positioning sleeve, a positioning nut is provided on the positioning sleeve, an internal thread matching the thread 1 is provided in the positioning nut, and the positioning nut can lock the positioning sleeve on the rotating shaft. The positioning sleeve and the positioning nut are convenient to operate, and the movement and locking of the driving disk can be quickly realized.

[0008] Furthermore, a handle placement groove is provided on the outer end surface of the driving disk, and a handle is hinged in the handle placement groove, so that the driving can be realized by manually rotating the driving disk when the driving motor fails, and the handle can be stored in the handle placement groove when not in use without causing interference and other hidden dangers.

[0009] Furthermore, a mark is provided on the housing at a position corresponding to the trigger rod. When the trigger rod is vertical, the mark corresponds to the zero scale line of the scale. The mark and the interval of 29° to 30° on the scale are provided with indicator lights. This makes it convenient for the operator to observe the tilt angle of the trigger rod, improves the adjustment efficiency, and facilitates the operator to promptly discover the change in the tilt angle of the trigger rod during inspection and make adjustments.

[0010] Furthermore, the lifting device includes a lifting screw, the upper end of which is connected to the fixed plate, the lower end of which is threadedly connected to a worm gear, the worm gear is rotatably disposed in the base, the worm gear is meshed with a worm, and one end of the worm gear extends out of the base. The height of the deviation switch is adjusted by the worm gear mechanism and the height of the deviation switch is locked by the self-locking function, thereby ensuring the accuracy and stability of the deviation switch position.

[0011] Furthermore, the lifting device comprises a lifting cylinder, a piston rod of the lifting cylinder is connected to the fixed plate, and a cylinder body of the lifting cylinder and the base are an integrated structure. The lifting cylinder can reduce the operator's workload and make adjustments faster.

[0012] Furthermore, the lifting device also includes a prompting device, and the distance measuring device is electrically connected to the prompting device. When the distance between the trigger rod and the edge of the conveyor belt is a set distance, the prompting device issues a prompt. The cooperation between the prompting device and the distance measuring device avoids the operator from controlling the lifting while observing the height working state, thereby improving the adjustment accuracy and efficiency.

[0013] It can be seen from the above technical solutions that the present invention has the following advantages:

[0014] The present invention provides a belt deviation protection device, which can accurately obtain the adjustment angle and position of the deviation switch through a distance measuring device and a scale, ensure high installation accuracy and prevent misjudgment; realize rotation drive and locking of the deviation switch by changing the position of the outer gear ring, prevent the deviation switch from rotating without ensuring the inclination angle, and has a simple and compact structure; facilitate operation through a positioning sleeve and a positioning nut, and quickly realize movement and locking of the drive disk; provide indicator lights at the mark and in the range of 29° to 31°, so that the operator can observe the inclination angle of the trigger rod and find the change of the inclination angle of the trigger rod conveniently, adjust the height of the deviation switch through a worm gear mechanism and lock the height of the deviation switch through a self-locking function, so as to ensure the accuracy and stability of the deviation switch position; improve the adjustment accuracy and efficiency through the cooperation of the prompt device and the distance measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 The structure of the first embodiment of the present invention is shown in FIG. Figure 1 .

[0017] Figure 2 The structure of the first embodiment of the present invention is shown in FIG. Figure 2 .

[0018] Figure 3 It is a schematic diagram of the assembly structure of the fixed disk and the driving disk in the first specific implementation mode of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the fixed disk in the first specific implementation mode of the present invention.

[0020] Figure 5 It is a structural schematic diagram of a second specific implementation mode of the present invention.

[0021] In the figure, 1. deviation switch, 101. trigger rod, 102. shell, 103. mark, 2. distance measuring device, 3. fixed plate, 301. inner ring gear, 302. rack, 303. drive motor, 304. indicator light, 4. drive plate, 401. positioning nut, 403. positioning sleeve, 4031. contraction groove, 404. outer ring gear, 405. handle, 5. rotating shaft, 6. lifting device, 601. lifting screw, 602. base, 603. worm, 604. solenoid valve, 7. prompt device. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent. Specific implementation method 1

[0024] like Figure 1As shown, this specific embodiment provides a belt deviation protection device, including a deviation switch 1, a fixed plate 3, a rotating assembly, and a lifting device 6; the deviation switch 1 includes a trigger rod 101 and a shell 102, the deviation switch 1 is electrically connected to the conveyor belt control terminal, the trigger rod 101 of the deviation switch 1 is provided with a distance measuring device 2, the distance measuring device 2 includes a distance measuring probe, the distance measuring probe is arranged in a mounting groove on the trigger rod 101, the length of the trigger rod 101 is L, the distance between the distance between the distance between the distance between the trigger rod 101 and the top of the shell 102 is 1 / 3L to 1 / 2L, the distance between the distance between the trigger rod 101 and the edge of the conveyor belt, and the distance measuring probe includes a laser distance measuring sensor; the fixed plate 3 and the shell 102 are connected at the same time. The axis is set, and a rotating component is set on the fixed disk 3. The rotating component can drive the shell 102 and the fixed disk 3 to rotate relative to each other. A scale is set on the fixed disk 3. The shell 102 and the trigger rod 101 are correspondingly provided with a mark 103. When the trigger rod 101 is vertical, the mark 103 corresponds to the zero scale line of the scale. The angle between the trigger rod 101 and the vertical direction can be read through the scale. The mark 103 and the interval of 29° to 30° on the scale are provided with an indicator light 304. The indicator light 304 adopts an LED strip light. The indicator light 304 can enable the operator to quickly and accurately read and judge whether there is a deviation after installation and is convenient for patrol during use. The inspection personnel judge the angle deviation and make adjustments; the lower end of the fixed plate 3 is connected to a lifting device 6, the lifting device 6 includes a base 602 and a lifting screw 601, the base 602 is connected to the conveyor belt chassis by bolts, the upper end of the lifting screw 601 is provided with an arc-shaped bracket, the bracket is connected to the edge of the fixed plate 3 by welding, the lower end of the lifting screw 601 is threadedly connected to the worm gear, the worm gear is rotatably arranged in the base 602 through a bearing, the worm gear is meshed with the worm 603, one end of the worm 603 extends out of the base 602 and is provided with a rotating handle, and a prompt device 7 is also provided on the base 602, the prompt device 7 uses LED lights of various colors, and the distance measuring device 2 and the prompt device 7 are electrically connected. The distance detected by the connection drop is transmitted to the prompt device 7. The prompt device 7 can determine whether the distance detected by the distance measuring device 2 is the set distance. When the distance between the trigger rod 101 and the edge of the conveyor belt is the set distance, the prompt device 7 issues a prompt. When the green light is on, it is adjusted to the right position. When the red light is on, it indicates that the height is too high. When the yellow light is on, it indicates that the height is too low. Through the prompt device 7, on the one hand, the operator can be reminded to adjust to the right position in time during the adjustment process. On the other hand, the display is omitted to simplify the structure of the distance measuring device 2 and reduce costs. Thirdly, it can also play a role in prompting position changes during the use of the deviation switch 1, which is convenient for inspection personnel to find changes in the position of the deviation switch 1 and make adjustments.

[0025] like Figures 2 to 4As shown, the rotating assembly can adopt the following specific structure: the rotating assembly includes a rotating shaft 5, a stepped hole is provided at the center position of the fixed disk 3, a bearing is provided in the hole with a smaller diameter of the stepped hole, the rotating shaft 5 is rotatably connected with the fixed disk 3 through the bearing, a driving disk 4 is provided at one end of the rotating shaft 5, the inner hole of the driving disk 4 is clearance-matched with the rotating shaft 5, a positioning sleeve 403 is provided on the front end surface of the driving disk 4, the positioning sleeve 403 is coaxially arranged with the rotating shaft 5, a thread is provided on the circumferential surface of the positioning sleeve 403, and four The four contraction grooves 4031 are evenly distributed along the circumference of the positioning sleeve 403. The extension direction of the contraction grooves 4031 is parallel to the axis of the positioning sleeve 403. The positioning sleeve 403 is provided with a positioning nut 401. The positioning nut 401 is provided with an internal thread matching the thread 1. After the positioning nut 401 is tightened, the positioning sleeve 403 can be locked on the rotating shaft 5. The circumferential surface of the driving disk 4 is provided with an external gear ring 404. The larger diameter hole of the stepped hole of the fixing disk 3 is provided with a gear matching the external gear ring 404. The inner gear ring 301 is matched, the number of teeth of the outer gear ring 404 and the inner gear ring 301 is at least 40, the inner gear ring 301, the rotating shaft 5 and the fixed disk 3 are coaxially arranged, the fixed disk 3 is movably provided with a rack 302, the rack 302 can mesh with the outer gear ring 404, the rack 302 is provided with a slider that can move in the slide groove on the outer end surface of the driving disk 4, one end of the rack 302 is meshed with the gear, the gear is arranged on the output shaft of the driving motor 303, the driving motor 303 is installed on the fixed disk 3, and the driving motor 303 A gear is provided, which meshes with the rack 302, and the other end of the rotating shaft 5 is connected to the shell 102. A handle placement groove is provided on the outer end surface of the driving disk 4, and a handle 405 is hinged in the handle placement groove. A magnetic block is provided on the inner end surface of the handle 405, which can be adsorbed on the bottom of the placement groove, so that the handle 405 can be stored in the handle placement groove when not in use; power transmission and locking are achieved by changing the position of the driving disk 4, so that one part has two functions, the structure is simple, compact and low in cost, and it is easy to operate, thereby improving the adjustment efficiency.

[0026] The installation process of the belt deviation protection device is as follows:

[0027] Input the set distance into the prompt device 7, and fix the base 602 on the bottom frame of the belt conveyor by bolts; move the drive disk 4 to a certain position so that the rack 302 is meshed with the outer gear ring 404 and locked on the rotating shaft 5 by the positioning nut 401; drive the rack 302 to move by the drive motor 303, observe the relative position of the mark 103 and the 30° scale line, when the mark 103 is aligned with the 30° scale line, stop the drive motor 303, unlock the positioning nut 401, push the drive disk 4 to move into the stepped hole, rotate the drive disk 4 slightly, so that the inner gear ring 304 and the outer gear ring 404 are meshed, and tighten and lock the positioning nut 401; rotate the worm 603 to make the lifting screw 601 rise until the prompt device 7 gives a prompt and the adjustment is completed; when the operator inspects, the inclination angle and height position of the deviation switch 1 can be checked by the alignment of the prompt device 7, the mark and the indicator light on the scale line to see if they have changed, and make adjustments. Specific implementation method 2

[0029] like Figure 5 As shown, the structure of this specific embodiment is basically the same as that of the specific embodiment one, and the difference is that: the lifting device 6 includes a lifting cylinder, the piston rod of the lifting cylinder is connected to the fixed plate 3, the cylinder body of the lifting cylinder and the base 602 are an integrated structure, and a solenoid valve 604 is provided on the lifting cylinder. The prompt device 7 is electrically connected to the solenoid valve 604. When the prompt device 7 detects that the distance between the trigger rod 101 and the edge of the conveyor belt is a set distance, the solenoid valve 604 controls the lifting cylinder to stop lifting and maintain the oil pressure at this time; through the cooperation of the solenoid valve 604 and the distance measuring device 2, the height of the deviation switch can be automatically adjusted, thereby improving the automation level of the device.

[0030] From the above specific implementations, it can be seen that the present invention has the following beneficial effects:

[0031] 1. Accurately obtain the angle and position of the deviation switch 1 through the distance measuring device 2 and the scale to ensure high installation accuracy and prevent misjudgment;

[0032] 2. The rotation drive and locking of the deviation switch 1 are realized by changing the position of the outer gear ring 404, so as to prevent the deviation switch 1 from rotating and failing to ensure the tilt angle, and the structure is simple and compact;

[0033] 3. The positioning sleeve 403 and the positioning nut 401 facilitate operation and quickly realize the movement and locking of the driving disk 4;

[0034] 4. By providing an indicator light 304 between the mark 103 and the interval between 2° and 30°, it is convenient for the operator to observe the tilt angle of the trigger rod 101 and to find the change of the tilt angle of the trigger rod 101.

[0035] 5. The height of the deviation switch can be adjusted through the worm gear 603 mechanism and the height of the deviation switch can be locked through the self-locking function to ensure the accuracy and stability of the deviation switch position;

[0036] 6. The prompt device 7 and the distance measuring device 2 are used to improve the adjustment accuracy and efficiency, and it is convenient for inspection personnel to find deviations.

[0037] The terms "upper", "lower", "outer side", "inner side", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position without giving qualitative description. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0038] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A belt deviation protection device, characterized in that: The invention comprises a deviation switch (1), wherein the deviation switch (1) is electrically connected to a conveyor belt control terminal, the deviation switch (1) comprises a trigger rod (101) and a housing (102), a distance measuring device (2) is arranged on the deviation switch (1), and the distance measuring device (2) can detect the distance between the trigger rod (101) and the conveyor belt, the deviation switch (1) is rotatably mounted on a fixed disk (3), the fixed disk (3) and the housing (102) are arranged coaxially, a rotating component is arranged on the fixed disk (3), the rotating component is connected to the housing (102), a scale is arranged on the fixed disk (3), and the angle between the trigger rod (101) and the vertical direction can be read through the scale, the fixed disk (3) is connected to a lifting device (6), and the lifting device (6) comprises a base (602), and the base (602) is used to be connected to a conveyor belt chassis; The rotating assembly comprises a rotating shaft (5), the rotating shaft (5) being rotatably connected to the fixed disk (3), a driving disk (4) being provided at one end of the rotating shaft (5), the driving disk (4) being movable along the rotating shaft (5) and being lockable, an outer gear ring (404) being provided on the circumferential surface of the driving disk (4), an inner gear ring (301) matching the outer gear ring (404) being provided on the fixed disk (3), the inner gear ring (301), the rotating shaft (5) and the fixed disk (3) being coaxially arranged, a rack (302) being movably provided on the fixed disk (3), the rack (302) being movable in a direction of rotation, and the rack (302) being movable in a direction of rotation. The rack (302) can mesh with the outer gear ring (404), one end of the rack (302) meshes with a gear, and the gear is arranged on the output shaft of the drive motor (303). The other end of the rotating shaft (5) is connected to the housing (102). The rotation drive and locking of the deviation switch (1) are achieved by changing the position of the outer gear ring (404). When the outer gear ring (404) meshes with the rack (302), the deviation switch (1) can be rotationally adjusted. When the outer gear ring (404) meshes with the inner gear ring (301), the position locking of the deviation switch (1) can be achieved.

2. The belt deviation protection device according to claim 1, characterized in that: The driving disk (4) is provided with a positioning sleeve (403), a thread one is provided on the circumferential surface of the positioning sleeve (403), four contraction grooves (4031) are provided on the circumferential surface of the positioning sleeve (403), the extension direction of the contraction grooves (4031) is parallel to the axis of the positioning sleeve (403), a positioning nut (401) is provided on the positioning sleeve (403), an internal thread matching the thread one is provided in the positioning nut (401), and the positioning nut (401) can lock the positioning sleeve (403) on the rotating shaft (5).

3. The belt deviation protection device according to claim 1, characterized in that: A handle placement groove is provided on the outer end surface of the driving disc (4), and a handle (405) is hinged in the handle placement groove.

4. The belt deviation protection device according to claim 2, characterized in that: A mark (103) is provided on the housing (102) at a position corresponding to the trigger rod (101); when the trigger rod (101) is vertical, the mark (103) corresponds to the zero scale line of the scale; and an indicator light (304) is provided between the mark (103) and the interval between 29° and 30° on the scale.

5. The belt deviation protection device according to claim 1, characterized in that: The lifting device (6) comprises a lifting screw (601), the upper end of the lifting screw (601) is connected to the fixed plate (3), the lower end of the lifting screw (601) is threadedly connected to a worm wheel, the worm wheel is rotatably arranged in the base (602), the worm wheel is meshed with a worm (603), and one end of the worm (603) extends out of the base (602).

6. The belt deviation protection device according to claim 1, characterized in that: The lifting device (6) comprises a lifting cylinder, a piston rod of the lifting cylinder is connected to the fixed plate (3), and a cylinder body of the lifting cylinder and the base (602) are an integrated structure.

7. The belt deviation protection device according to claim 5 or 6, characterized in that: The lifting device (6) further comprises a prompting device (7), the distance measuring device (2) being electrically connected to the prompting device (7), and when the distance between the trigger rod (101) and the edge of the conveyor belt is a set distance, the prompting device (7) issues a prompt.

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