Belt conveyor with limiting device

Abstract

The utility model provides a belt conveyor with limiting devices, which is characterized in that the limiting devices (5) are arranged on the left side and the right side of a conveyor belt (A1), and each limiting device (5) comprises a fixing frame (1), a threaded rod (21), a threaded sleeve (22) and a pressing plate (2); the fixing frame is provided with an upper-layer transverse plate (11) and a lower-layer transverse plate (12), the threaded rod (21) is rotationally connected with the upper-layer transverse plate (11), the threaded sleeve (22) penetrates through a through hole (14) of the lower-layer transverse plate, the lower end of the threaded rod (21) is in threaded connection with the threaded sleeve (22), when the threaded rod (21) rotates, the threaded sleeve (22) moves upwards or downwards, and the upper side of the pressing plate (2) with the flat lower end face is connected with the lower end of the threaded sleeve (22). A worker can firstly adjust the rotating angle of the threaded rod (21) according to the specification of a bagged product, so that the pressing plate (2) is located at a proper height.

Description

Technical Field

[0001] The utility model relates to a conveyor, in particular to a belt conveyor provided with an adjustable limit device. Background Art

[0002] A belt conveyor, also known as a belt conveyor or a belt conveyor, includes structures such as a belt, a driving motor, and a transmission pulley group, and has the advantages of strong conveying capacity, simple structure, and easy maintenance. It is widely used in the material conveying work in fields such as chemical industry, food, and medicine.

[0003] The existing belt conveyor is also equipped with a limit device for sorting the form of materials. For example, Figure 6 shows the structure of an existing belt conveyor for conveying bagged chemical products (such as potassium fertilizer, urea, etc.), and its function is to send the bagged products to a printing machine for printing.

[0004] As Figure 6 shown, the limit device provided on the conveyor belt A1 of the belt conveyor A includes two fixed guide plates 01 and two right-angled folding plates 02. The two fixed guide plates 01 are long plates extending along both sides of the conveyor belt A1, and are used to straighten the bagged products conveyed by the conveyor belt A1. The two right-angled folding plates 02 are symmetrically fixed on the left and right sides of the conveyor belt A1, and can sort out a flat upper end surface of the bagged products conveyed by the conveyor belt A1, so that the printing machine can print marks such as production date and quality on the upper end surface.

[0005] However, since the limit device in the existing belt conveyor is a fixed structure, it can only be used for the printing of bagged products of one specification, and it is difficult to meet the production requirements of enterprises with various specifications of packaging. Summary of the Utility Model

[0006] The utility model provides a belt conveyor provided with a limit device, and the limit device is adjustable to solve the problem that the limit device in the existing belt conveyor is a fixed structure and can only be used for the printing of bagged products of one specification, and it is difficult to meet the production requirements of enterprises with various specifications of packaging.

[0007] The belt conveyor S includes a conveyor belt A1 for conveying materials, a driving motor A2 for providing power, and a transmission pulley group, and also includes two limit devices 5 symmetrically arranged on the left and right sides of the conveyor belt A1. Each limit device 5 includes a fixed frame 1, a threaded rod 21, a threaded sleeve 22, and a pressing plate 2.

[0008] The fixed frame 1 includes a lower-layer horizontal plate 12 and an upper-layer horizontal plate 11. The lower-layer horizontal plate 12 is fixed above the left or right side of the conveyor belt A1 through a support wall 101, and the upper-layer horizontal plate 11 is arranged directly above the lower-layer horizontal plate 12 through a support member 102.

[0009] A circular hole 13 is provided in the middle of the upper cross plate 11, and the threaded rod 21 is rotatably connected to the upper cross plate 11 through the circular hole 13.

[0010] The lower cross plate 12 is provided with a through hole 14 facing the circular hole 13, and the threaded sleeve 22 passes through the through hole 14.

[0011] The lower end of the threaded rod 21 is threadedly connected to the threaded sleeve 22. When the threaded rod 21 rotates, the threaded sleeve 22 moves up or down.

[0012] The upper side of the pressing plate 2 is fixedly connected to the lower end of the threaded sleeve 22, and the pressing plate 2 has a flat lower end surface.

[0013] Before production, the staff can first adjust the rotation angle of the threaded rod 21 according to the specifications of the bagged products, so that the pressing plate 2 is at an appropriate height. Therefore, during the process of different bagged products being conveyed by the conveyor belt A1, they can all be sorted into a shape with a flat upper end surface by the two pressing plates 2, which is convenient for printing by the printing machine.

[0014] Preferably, the belt conveyor S further includes two rotating rods 33, four moving connecting rods 31, and two guiding plates 3.

[0015] Two parallel through grooves 17 are provided on the lower side of each lower cross plate 12. The through grooves 17 are perpendicular to the conveying direction of the conveyor belt A1. Each support wall 101 is provided with two mounting holes 16 corresponding to the through grooves 17, and the two rotating rods 33 are rotatably connected to the support wall 101 through the mounting holes 16.

[0016] Symmetrical double-threaded threads are provided on the outer sides of the respective rotating rods 33. The upper ends of the respective moving connecting rods 31 are installed at the left and right ends of the rotating rods 33 through screw holes 311 matching the double-threaded threads. When the rotating rods 33 rotate, the moving connecting rods 31 move inwards or outwards.

[0017] Each guiding plate 3 is arranged inside the support wall 101 and is fixedly connected to the lower ends of the moving connecting rods 31 at one end of the two rotating rods 33.

[0018] Before production, the staff first adjusts the rotation angle of the rotating rod 33 according to the specifications of the bagged products, so that there is an appropriate distance between the two guiding plates 3. Therefore, during production, during the process of different bagged products being conveyed by the conveyor belt A1, they can all be aligned in direction by the two guiding plates 3, so that the pressing plate 2 can flatten the bagged products.

[0019] Preferably, a long strip-shaped block parallel to the central axis of the threaded sleeve 22 is provided on the outer side of the threaded sleeve 22 as an anti-rotation bar 23. The through hole 14 has an anti-rotation groove 141 matching the shape of the anti-rotation bar 23, which can prevent the threaded sleeve 22 from rotating during the moving process.

[0020] Preferably, each limiting device is further provided with two sliding rods 26, a cross bar 27, and an extension plate 20.

[0021] The sliding rods 26 are respectively arranged on the front and rear sides of the threaded sleeve 22, and the upper ends of the sliding rods 26 are fixedly connected to the upper part of the threaded sleeve 22 through the cross bar 27.

[0022] Sliding holes 15 matching the shapes of the sliding rods 26 are respectively arranged on the front and rear sides of the lower layer cross plate 12, and the lower ends of the sliding rods 26 pass through the sliding holes 15.

[0023] The upper side of the extension plate 20 is fixedly connected to the lower end of the sliding rod 26. The extension plate 20 has a flat lower end surface, and its height is flush with that of the pressing plate 2. There is a spacing between the extension plate 20 and the pressing plate 2 as a passage for the movable connecting rod 31 to pass through.

[0024] Therefore, the extension plate 20 can cooperate with the pressing plate 2 to better flatten the bagged products, and adjusting the heights of the pressing plate 2 and the extension plate 20 and adjusting the position of the guide tube 3 will not affect each other.

[0025] Preferably, a knob 331 for the staff to rotate is arranged at the outer end of the rotating rod 33.

[0026] Preferably, the two rotating rods 33 are connected by a transmission belt so that the rotating rods 33 can rotate synchronously to ensure that the extending direction of the guide rod 3 is always parallel to the conveying direction of the conveyor belt A1.

[0027] Preferably, the front and rear ends of the guide plate 3 open outward so that the bagged products can be loaded onto the conveyor belt A1.

[0028] Preferably, the belt conveyor S is further provided with a cleaning device 4, including a cleaning rack 42 fixedly arranged below the conveyor belt A1. A cleaning brush 46 is arranged on the upper side of the cleaning rack 42. The cleaning brush 46 is in contact with the lower end surface of the conveyor belt A1 and can clean its surface when the conveyor belt A1 rotates to the lower side.

[0029] Preferably, the cleaning device 4 is detachably connected to the belt conveyor S, which is convenient for the staff to clean and maintain the cleaning brush 46.

[0030] Preferably, mounting side plates A3 are arranged on the left and right sides of the conveyor belt A1. Mounting grooves 41 are arranged on the mounting side plates A3. The two ends of the cleaning rack 42 are bent upward as mounting parts 421, and bolt mounting holes 43 are respectively arranged on the mounting parts 421.

[0031] Bolts 45 matching the shapes of the mounting grooves 41 are inserted into the bolt mounting holes 43. Springs 44 are arranged between the bolts 45 and the mounting parts 421.

[0032] The latch 45 is inserted into the mounting groove 41 and locked inward by the spring 44 , so the cleaning device 4 can be removed or installed from the mounting side plate A3 only by pushing the latch 45 outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural illustration of a belt conveyor provided with a limiting device;

[0034] Figure 2 It is a structural illustration diagram in which the fixing frame is cut open to show the internal structure of the limiting device;

[0035] Figure 3 It is a structural illustration of the fixing frame;

[0036] Figure 4 It is a structural illustration showing the connection relationship between the lower horizontal plate of the fixed frame and the guide plate;

[0037] Figure 5 is a structural illustration of the cleaning bracket;

[0038] Figure 6 It is a structural illustration of an existing belt conveyor.

[0039] Figure numerals: A-belt conveyor; A1-conveyor belt; A2-driving motor; A3-mounting side plate A3; 1-fixed frame, 11-upper horizontal plate; 12-lower horizontal plate; 101-support wall; 102-support member; 13-circular hole; 14-through hole; 141-stop groove; 15-slide hole; 16-mounting hole; 17-through groove; 2-pressing plate; 20-expansion plate; 21-threaded rod, 22-threaded Sleeve, 23- anti-rotation bar 26- slide bar; 27- cross bar; 3- guide plate; 31- movable connecting rod; 311- screw hole 311; 33- rotating rod; 331- knob; 4- cleaning device; 41- mounting groove; 42- cleaning frame; 421- mounting part; 43- bolt mounting hole; 44- spring; 45- bolt; 46- cleaning brush; 5- limiting device; 01- fixed guide plate; 02- right angle folding plate. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The following description is a concretization of the claims of the present invention. Example

[0041] Figure 1 The structure of a belt conveyor provided with a limiting device is shown.

[0042] like Figure 1As shown in the figure, the belt conveyor S includes a conveyor belt A1 for conveying materials, a driving motor A2 for providing power, a transmission pulley set for transmission, supporting legs A4 for support, and a limiting device. During use, the upper side of the conveyor A1 moves forward and can convey bagged products.

[0043] As Figure 1 shown in the figure, two symmetrically arranged limiting devices 5 are provided above the belt conveyor S, and a cleaning device 4 is provided at the bottom.

[0044] Figure 2 is a structural explanatory diagram of the fixed frame cut open, showing the internal structure of the limiting device.

[0045] As Figure 2 shown in the figure, each limiting device 5 includes a fixed frame 1, a threaded rod 21, a threaded sleeve 22, and a pressing plate 2. In addition, two rotating rods 33, four moving connecting rods 31, and two guide plates 3 are also installed on the two limiting devices 5.

[0046] Figure 3 shows the structure of the fixed frame 1. Combining Figure 2 , Figure 3 it can be seen that the fixed frame 1 includes a lower-layer cross plate 12 and an upper-layer cross plate 11. The two lower-layer cross plates 12 are respectively fixed on the left or right side above the conveyor belt A1 through support walls 101. The lower-layer cross plate 12 and the support wall 101 form a shape with a cross-section of "L-shaped".

[0047] Both ends of the upper-layer cross plate 11 are provided with square straight plates as support members 102, and are arranged directly above the lower-layer cross plate 12 through the support members 102.

[0048] Combining Figure 3 it can be seen that a circular hole 13 is provided in the middle of the upper-layer cross plate 11, and the threaded rod 21 is rotatably connected to the upper-layer cross plate 11 through the circular hole 13.

[0049] As Figure 2 shown in the figure, the outer side of the lower part of the threaded rod 21 has an external thread, and the threaded sleeve 22 has an internal thread matching the external thread. The lower end of the threaded rod 21 is threadedly connected to the threaded sleeve 22. When the threaded rod 21 rotates, the threaded sleeve 22 moves up or down.

[0050] Combining Figure 3 it can be seen that a through hole 14 matching the outer contour of the threaded sleeve 22 is provided in the middle of the lower-layer cross plate 12. The through hole 14 is directly opposite to the circular hole 13 (that is, located directly below the circular hole 13), and the threaded sleeve 22 passes through the through hole 14.

[0051] An elongated block parallel to the central axis of the threaded sleeve 22 is provided on the outer side of the threaded sleeve 22 as an anti-rotation bar 23. The through hole 14 has an anti-rotation groove 141 matching the shape of the anti-rotation bar 23, which can prevent the threaded sleeve 22 from rotating during movement.

[0052] As Figure 2 shown, the upper side of the pressing plate 2 is fixedly connected to the lower end of the threaded sleeve 22. The pressing plate 2 has a flat lower end surface and can move up or down with the threaded sleeve 22. Therefore, only by rotating the threaded rod 21 can the height of the pressing plate 2 be adjusted.

[0053] Figure 4 The structure showing the connection relationship between the lower horizontal plate of the fixed frame and the guide plate is shown. For the convenience of description, the right lower horizontal plate 12 is cut and shown. Combining Figure 2 、 Figure 4 it can be seen that two parallel through grooves 17 are provided on the lower side of each lower horizontal plate 12. The through grooves 17 are perpendicular to the conveying direction of the conveyor belt A1. Two mounting holes 16 corresponding to the through grooves 17 are provided on each support wall 101. Two rotating rods 33 are rotatably connected to the support wall 101 through the mounting holes 16.

[0054] Symmetrical double-threaded threads are provided on the outer sides of the respective rotating rods 33, that is, the outer thread directions of the left and right parts are opposite. The upper ends of the respective moving connecting rods 31 are installed at the left and right ends of the rotating rod 33 through screw holes 311 matching the double-threaded threads. When the rotating rod 33 rotates, the moving connecting rod 31 moves inwards or outwards.

[0055] The guide plate 3 is a long straight plate shape extending along the conveying direction of the conveyor belt A1, and the front and rear ends open outwards so that the bagged products can be loaded onto the conveyor belt A1. As Figure 2 shown, the guide plate 3 is arranged inside the support wall 101 and is fixedly connected to the lower ends of the moving connecting rods 31 at one ends of the two rotating rods 33. Therefore, only by rotating the knob 331 can the position of the guide plate 3 be adjusted.

[0056] A knob 331 for the staff to rotate is provided at the outer end of the rotating rod 33. The two rotating rods 33 are connected by a transmission belt so that the rotating rods 33 can rotate synchronously to ensure that the extending direction of the guide rod 3 is always parallel to the conveying direction of the conveyor belt A1.

[0057] In addition, as Figure 2 shown, the limiting device is also provided with two sliding rods 26, a cross bar 27, and an extension plate 20 to better cooperate with the pressing plate 2 to flatten the bagged products.

[0058] The respective sliding rods 26 are respectively arranged on the front and rear sides of the threaded sleeve 22, and the upper ends of the sliding rods 26 are fixedly connected to the upper part of the threaded sleeve 22 through the cross bar 27.

[0059] On the front and rear sides of the lower horizontal plate 12, sliding holes 15 matching the shape of the sliding rod 26 are respectively provided, and the lower end of the sliding rod 26 passes through the sliding holes 15.

[0060] The upper side of the extension plate 20 is fixedly connected to the lower end of the sliding rod 26. The extension plate 20 has a flat lower end surface, and its height is flush with that of the pressing plate 2. There is a spacing between the extension plate 20 and the pressing plate 2 as a passage for the movable connecting rod 31 to pass through. Therefore, adjusting the heights of the pressing plate 2 and the extension plate 20 and adjusting the position of the guiding tube 3 will not affect each other.

[0061] Figure 5 The structure of the cleaning device 4 is shown, as Figure 5 shown. The cleaning device 4 includes a cleaning rack 42 fixedly arranged below the conveyor belt A1, and the cleaning rack 42 is detachably fixed below the belt conveyor S.

[0062] Combined Figure 1 、 2 looking at the left and right sides of the conveyor belt A1, mounting side plates A3 are provided, and mounting grooves 41 are provided on the mounting side plates A3.

[0063] As Figure 5 shown, the two ends of the cleaning rack 42 are bent upward as mounting parts 421, and bolt mounting holes 43 are respectively provided on the mounting parts 421. Bolts 45 matching the shape of the mounting grooves 41 are inserted into the respective bolt mounting holes 43, and springs 44 in a stretched state are provided between the bolts 45 and the mounting parts 421.

[0064] The bolts 45 are inserted into the mounting grooves 41, and the bolts 45 are locked inward by the springs 44, that is, the springs 44 apply an inward force to the bolts 45, so that the bolts 45 can be fixed in the mounting grooves 41. Therefore, only by pushing the bolts 45 outward can the cleaning device 4 be disassembled or installed on the mounting side plates A3.

[0065] A cleaning brush 46 is provided on the upper side of the cleaning rack 42. The cleaning brush 46 is in contact with the lower end surface of the conveyor belt A1 and can clean the surface of the conveyor belt A1 when it rotates to the lower side.

[0066] Before production, the staff first adjusts the rotation angle of the rotating rod 33 according to the specifications of the bagged products, so that there is an appropriate distance between the two guiding plates 3, and adjusts the rotation angle of the threaded rod 21, so that the pressing plate 2 and the extension plate 20 are at appropriate heights.

[0067] Therefore, during production, when different bagged products are conveyed by the conveyor belt A1, they can all be aligned in direction by the two guiding plates 3 and then sorted into a shape with a flat upper end surface by the pressing plate 2 and the extension plate 20, so as to facilitate printing by the printing machine.

[0068] The belt conveyor provided with a limiting device by the utility model has a simple structure and is convenient to adjust, can adapt to the printing production of bagged products with multiple specifications, and is suitable for popularization in the industry.

Claims

1. A belt conveyor provided with a limiting device, the belt conveyor (A) comprising a conveyor belt (A1) for conveying materials, a driving motor (A2) for providing power, and a transmission pulley set, characterized in that, the belt conveyor (A) further comprises two side limiting devices (5) symmetrically arranged on the left and right sides of the conveyor belt (A1), and each of the limiting devices (5) comprises: a fixed frame (1), a threaded rod (21), a threaded sleeve (22), and a pressing plate (2). The fixed frame (1) comprises a lower horizontal plate (12) and an upper horizontal plate (11), the lower horizontal plate (12) is fixed above the left or right side of the conveyor belt (A1) through a support wall (101), and the upper horizontal plate (11) is arranged directly above the lower horizontal plate (12) through a support member (102). A circular hole (13) is arranged in the middle of the upper horizontal plate (11), and the threaded rod (21) is rotatably connected to the upper horizontal plate (11) through the circular hole (13). The lower end of the threaded rod (21) is threadedly connected to the threaded sleeve (22), and when the threaded rod (21) rotates, the threaded sleeve (22) moves up or down. The lower horizontal plate (12) is provided with a through hole (14) facing the circular hole (13), and the threaded sleeve (22) passes through the through hole (14). The upper side of the pressing plate (2) is fixedly connected to the lower end of the threaded sleeve (22), and the pressing plate (2) has a flat lower end surface.

2. The belt conveyor provided with a limiting device according to claim 1, wherein The belt conveyor (A) further comprises two rotating rods (33), four moving connecting rods (31), and two guide plates (3). Two parallel through grooves (17) are arranged on the lower side of each of the lower horizontal plates (12), the through grooves (17) are perpendicular to the conveying direction of the conveyor belt (A1), and each of the support walls (101) is provided with two mounting holes (16) corresponding to the through grooves (17), and the two rotating rods (33) are rotatably connected to the support walls (101) through the mounting holes (16). Symmetrical double-threaded threads are arranged on the outer sides of the rotating rods (33), and the upper ends of the moving connecting rods (31) are mounted on the left and right ends of the rotating rods (33) through screw holes (311) matching the double-threaded threads. When the rotating rods (33) rotate, the moving connecting rods (31) move inwards or outwards. Each of the guide plates (3) is arranged inside the support wall (101) and is fixedly connected to the lower ends of the moving connecting rods (31) at one end of the two rotating rods (33).

3. The belt conveyor provided with a limiting device according to claim 1, characterized in that, A long strip-shaped block parallel to the central axis of the threaded sleeve (22) is arranged on the outer side of the threaded sleeve (22) as an anti-rotation bar (23), and the through hole (14) has an anti-rotation groove (141) matching the shape of the anti-rotation bar (23).

4. The belt conveyor provided with a limiting device according to claim 2, wherein, Each of the limiting devices is further provided with two sliding rods (26), a cross bar (27), and an extension plate (20). Each of the sliding rods (26) is respectively arranged on the front and rear sides of the threaded sleeve (22). The upper end of the sliding rod (26) is fixedly connected to the upper part of the threaded sleeve (22) through a cross bar (27). Sliding holes (15) matching the shape of the sliding rods (26) are respectively arranged on the front and rear sides of the lower horizontal plate (12). The lower ends of the sliding rods (26) pass through the sliding holes (15). The upper side of the extension plate (20) is fixedly connected to the lower ends of the sliding rods (26). The extension plate (20) has a flat lower end surface, and its height is flush with that of the pressing plate (2). A gap is provided between the extension plate (20) and the pressing plate (2) as a passage for the movable connecting rod (31) to pass through.

5. The belt conveyor provided with a limiting device according to claim 2, wherein, A knob (331) for the operator to rotate is arranged at the outer end of the rotating rod (33).

6. The belt conveyor provided with a limiting device according to claim 5, wherein, The two rotating rods (33) are connected by a transmission belt for transmission.

7. The belt conveyor provided with a limiting device according to any one of claims 2, 4, 5, and 6, characterized in that The front and rear ends of the guide plate (3) open outward.

8. The belt conveyor provided with a limiting device according to any one of claims 1 to 6, characterized in that, The belt conveyor (A) is further provided with a cleaning device (4), including a cleaning rack (42) fixedly arranged below the conveyor belt (A1). A cleaning brush (46) is arranged on the upper side of the cleaning rack (42), and the cleaning brush (46) is in contact with the lower end surface of the conveyor belt (A1).

9. The belt conveyor provided with a limiting device according to claim 8, wherein, The cleaning device (4) is detachably connected to the belt conveyor (A).

10. The belt conveyor provided with a limiting device according to claim 9, characterized in that, Installation side plates (A3) are arranged on the left and right sides of the conveyor belt (A1). Installation grooves (41) are arranged on the installation side plates (A3). The two ends of the cleaning rack (42) are bent upward to form installation parts (421), and bolt installation holes (43) are respectively arranged on the installation parts (421). Bolts (45) matching the shape of the installation grooves (41) are inserted into the bolt installation holes (43). Springs (44) are arranged between the bolts (45) and the installation parts (421). The bolts (45) are inserted into the installation grooves (41), and the bolts (45) are locked inward by the springs (44).

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