CN113753499A - Telescopic device for belt telescopic machine and use method thereof - Google Patents
Telescopic device for belt telescopic machine and use method thereof Download PDFInfo
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- CN113753499A CN113753499A CN202111149430.6A CN202111149430A CN113753499A CN 113753499 A CN113753499 A CN 113753499A CN 202111149430 A CN202111149430 A CN 202111149430A CN 113753499 A CN113753499 A CN 113753499A
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- box body
- fixedly connected
- telescopic
- belt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/10—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors movable, or having interchangeable or relatively movable parts; Devices for moving framework or parts thereof
- B65G21/14—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors movable, or having interchangeable or relatively movable parts; Devices for moving framework or parts thereof to allow adjustment of length or configuration of load-carrier or traction element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G41/00—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames
Abstract
The invention discloses a telescopic device for a belt telescopic machine and a use method thereof, comprising a main box body, the main box body comprises a main box body, the inner walls of the two sides of the main box body are fixedly connected with first hard rails, the upper positions of the first hard rails are fixedly connected with helical racks, the inner cavity of the main box body is sleeved with at least one second box body through the helical racks and the first hard rails, the second box body comprises a second box body, the inner walls of the two sides of the second box body are fixedly connected with second hard rails, the inner cavity of the second box body is sleeved with a third box body through a second hard rail, the device of the invention has simple installation and long service life, is suitable for general popularization and application, and the device has high stability, strong safety, high running speed and stable running, is suitable for the occasions of belt transportation with large inclination, and is not easy to cause safety accidents.
Description
Technical Field
The invention relates to the technical field of transmission, in particular to a telescopic device for a belt telescopic machine and a using method thereof.
Background
The telescopic belt conveyor is characterized in that a telescopic mechanism is additionally arranged on a common belt conveyor, so that the belt conveyor can freely stretch in the length direction. The user can adjust the button according to the requirement of oneself, controls the length of conveyer at any time. In the model with the automatic lifting device, the user can also control the height of the end part of the conveyor at any time. The telescopic belt conveyor is mainly applied to vehicle loading and unloading and a material conveying system with telescopic requirements.
The belt stretching machine is widely applied to the field of logistics and loading, basically adopts a synchronous toothed belt or a belt to drive a stretching structure for transmission, is suitable for parallel transmission, and has the advantages of simple structure and low requirement on processing precision. The device is also driven by a rack and a gear, but the structure on the market only can stretch a section of belt, and the application range is small.
Chinese patent publication No. CN213111112U discloses an automatically adjustable belt stretching machine, which is composed of a fixed frame, a rotary roller, a driven wheel, a rack, a telescopic frame, a fixed plate, a driving device, a second motor, a driving gear, a rotating rod, a driving gear, a driven roller and other structures, realizes automatic adjustment, improves the efficiency of loading and unloading goods, and ensures the life health and safety of workers; however, the device is only suitable for parallel transmission, has simple structure and low requirement on processing precision, is easy to cause unstable transmission and damage, and cannot be used for large-gradient transmission.
Chinese patent publication No. CN210259929U discloses a belt stretching mechanism, which comprises a fixed roller mechanism, a belt, a roller, a sliding roller mechanism, a base, a slide rail, a guide wheel, a rack, a gear, a clamping block, and a return spring, wherein the structure is driven by the rack and the gear, but obviously only one section of belt can be stretched, the application range is small, and the practicability is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hard transmission structure capable of stretching two or more sections and a device adopting the structure, wherein the hard transmission structure can also synchronously move when a belt is stretched for one section.
The invention solves the technical problems through the following technical means: the double-layer steel wire rope box comprises a main box body, wherein the main box body comprises a main box body, first hard rails fixedly connected with the inner walls of the two sides of the main box body, oblique racks fixedly connected with the upper positions of the first hard rails, at least one second box body is sleeved in the inner cavity of the main box body through the oblique racks and the first hard rails, the second box body comprises a second box body, second hard rails fixedly connected with the inner walls of the two sides of the second box body, and a third box body is sleeved in the inner cavity of the second box body through the second hard rails.
The invention has high precision and simple structure, can be used for conveying parallel to the ground and also can be used for conveying with large inclination, is not easy to cause safety accidents, and has strong rigidity. And a telescopic motor and a gear box can be additionally arranged for four-section and five-section transmission. The stability of the logistics transportation large-inclination belt transportation in the existing market is facilitated.
Preferably: the main box body comprises a main transmission roller, the rear end of an inner cavity of the main box body is fixedly connected with a first mounting plate, the upper end of the first mounting plate is fixedly connected with a driving motor, a chain wheel is sleeved on the outer side of a rotating shaft of the driving motor, and a chain is connected between the rotating shaft and the chain wheel on one side of the main transmission roller, which corresponds to the driving motor;
the main box body further comprises a second roller assembly, the second roller assembly is movably connected to the tail end of the main box body, one end, far away from the second roller assembly, of an inner cavity of the main box body is movably connected with a first roller assembly, the front end of the main box body is movably connected with a third roller assembly, and both sides of the inner wall of the foremost end of the inner cavity of the main box body are fixedly connected with first bearing assemblies;
the front end and the rear end of the outer side of the main box body are fixedly connected with supporting frames.
Preferably: the equal fixedly connected with at least a set of first side-mounting panel in the outside of second box body, all be connected with two first compound bearings on the first side-mounting panel, two first compound bearing is diagonal symmetry and sets up, and two interval between the first compound bearing and the high phase-match of first hard rail.
Preferably: at least one first side mounting panel is all installed at the outside both ends of second box body, the outside of first side mounting panel all meshes with the helical rack mutually.
Preferably: the second box body comprises a second mounting plate, a support plate and a shaft support, a telescopic motor is fixedly connected to the rear end of the upper end of the second mounting plate, a triaxial output gear box is fixedly connected to the front end of the upper end of the second mounting plate, a lead screw is connected to an inner cavity of a rotating shaft of the telescopic motor, which penetrates through the triaxial output gear box, one end of the lead screw, which is far away from the triaxial output gear box, extends to the upper end of the support plate, and the shaft support is fixed with the shaft support.
Preferably: the second box body further comprises a second bearing assembly, the second bearing assembly is fixedly connected to two sides of the inner wall of the foremost end of the inner cavity of the second box body, a fourth roller assembly is movably connected to one end, close to the second mounting plate, of the bottom plate of the second box body, and a fifth roller assembly is movably connected to one end, close to the second bearing assembly, of the bottom plate of the second box body.
Preferably: the two sides of the tail end of the outer side of the second box body are fixedly connected with roller assemblies, and the two ends, far away from the roller assemblies, of the two roller assemblies are attached to the inner wall of the main box body.
Preferably: the third box includes the third box body, the equal at least a set of second side-mounting panel of fixedly connected with in the outside of third box body, all be connected with two second composite bearings on the second side-mounting panel, two the second composite bearing is diagonal symmetry and sets up, and two interval between the second composite bearing and the high phase-match of the hard rail of second.
Preferably: the third box body comprises a nut bottom plate, and a screw-nut pair matched with the inner cavity of the nut bottom plate is fixedly connected with the corresponding position;
one end of the third box body, which is close to the nut bottom plate, is movably connected with a sixth roller assembly, and the front end of the third box body
A seventh roller assembly is movably connected with the rotary drum.
A method for using a telescopic device for a belt compressor according to any one of claims 1 to 9, comprising the steps of: the main box body is kept still, the second box body moves forward or retreats along the first hard rails, and the third box body moves forward or retreats along the second hard rails on two sides of the inner wall of the second box body.
The invention has the advantages that: the invention adopts the rigid structure of the helical gear, the helical rack, the screw rod and the screw rod nut pair to move, the hard rail is used as a hard rail slideway for fixing the box body, the stretching speed is high, the stretching speed is stable, the precision is high, the structure is simpler, the invention not only can be used for conveying parallel to the ground, but also can be used for conveying with large inclination, the safety accident is not easy to occur, and the rigidity is strong. And a telescopic motor and a gear box can be additionally arranged for four-section and five-section transmission. The system is favorable for the stability, safety and rapidness of the logistics transportation large-inclination belt transportation in the existing market, a servo motor or a common motor with an encoder can be selected and matched with the stretching precision, a ball screw or a trapezoidal screw can be selected, and the system can be used for more complicated transportation and transmission.
Drawings
FIG. 1 is a schematic view of an overall three-dimensional structure of a telescopic device for a belt expander and a method for using the same according to the present invention;
FIG. 2 is a schematic perspective view of a main housing of a belt retractor and a method for using the same according to the present invention;
FIG. 3 is a schematic top view of a telescopic device for a belt expander and a method for using the same according to the present invention;
FIG. 4 is a right side view of the structure of the expansion device for a belt expander and the method for using the same of the present invention;
FIG. 5 is a schematic perspective view of a second case of the telescopic device for a belt telescopic machine and a method for using the same according to the present invention;
FIG. 6 is a schematic top view of a second case of the telescopic device for a belt telescopic machine and a method for using the same according to the present invention;
FIG. 7 is a right side view of the second box of the expansion device for the belt expander and the method for using the same of the present invention;
FIG. 8 is a schematic top view of a third case of the telescopic device for a belt telescopic machine and a method for using the same according to the present invention;
FIG. 9 is a schematic front view of a third case of the telescopic device for a belt telescopic machine and a method for using the same according to the present invention;
FIG. 10 is a schematic diagram of a right side view of a third case of the telescopic device for a belt telescopic machine and a method for using the same according to the present invention;
fig. 11 is a schematic top view of a telescopic device for a belt telescopic machine and a method for using the same according to the present invention.
In the figure: 1-a main box body; 11-main box body; 111-a first mounting plate; 112-a first roller assembly; 113-a second roller assembly; 114-helical rack; 115-a first rigid rail; 116-a third roller assembly; 117-a first bearing assembly; 12-a drive motor; 13-a main transmission roller; 14-a support frame; 15-a sprocket; 16-a chain; 2-a second box body; 21-a second box body; 211-a second mounting plate; 212-a second rigid rail; 213-a fourth roller assembly; 214-a support plate; 215-axle support; 216-a fifth roller assembly; 217-a second bearing assembly; 22-a telescopic motor; 23-a three-shaft output gearbox; 24-a screw rod; 25-a first side mounting plate; 251-a first compound bearing; 26-a bevel gear; 27-a roller assembly; 3-a third box body; 31-a third case body; 311-nut bottom plate; 312-a sixth roller assembly; 313-a seventh drum assembly; 32-screw nut pair; 33-a second side mounting plate; 331-second composite bearing.
Detailed Description
Example one
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the invention discloses a telescopic device for a belt telescopic machine and a use method thereof, comprising a main box body 1, a second box body 2 and a third box body 3.
Referring to fig. 2-4, the main box body 1 comprises a main box body 11 and a main transmission roller 13, the main box body 11 is of a concave rectangular structure, the rear end of the bottom plate of the main box body 11 is fixedly connected with a first mounting plate 111, and the upper end of the first mounting plate 111 is fixedly connected with a driving motor 12, so that the equipment is simple and the practicability is high; the sprocket 15 is sleeved on the outer side of the rotating shaft of the driving motor 12, the chain 16 is connected between the rotating shaft of the corresponding side of the main driving roller 13 and the driving motor 12 and the sprocket 15, the first hard rails 115 are fixedly connected to the inner walls of the two sides of the main box body 11, and the helical racks 114 are fixedly connected to the positions above the first hard rails 115.
In this embodiment, the main box body 11 further includes a second roller assembly 113, the second roller assembly 113 is movably connected to the end of the main box body 11, one end of the inner cavity of the main box body 11, which is far away from the second roller assembly 113, is movably connected to a first roller assembly 112, the front end of the main box body 11 is movably connected to a third roller assembly 116, and both sides of the inner wall of the foremost end of the inner cavity of the main box body 11 are fixedly connected to a first bearing assembly 117.
Equal fixedly connected with support frame 14 in both ends around the outside of main tank body 11 in this embodiment, and support frame 14 all is the setting of triangle type integral type, and stability is high, the security is strong.
Referring to fig. 5-7, the second box 2 is a rectangular frame structure smaller than the main box 1, the second box 21 includes a second mounting plate 211, a supporting plate 214, a shaft support 215, the upper end rear end of the second mounting plate 211 is fixedly connected with a telescopic motor 22 (the telescopic motor adopts a servo motor or a common motor with an encoder, and can precisely extend and retract a stroke), the upper end front end of the second mounting plate 211 is fixedly connected with a triaxial output gear box 23, and the input-output ratio of the triaxial output gear box 23 is 1: 1, a rotating shaft of a telescopic motor 22 penetrates through an inner cavity of a triaxial output gear box 23 to be connected with a screw rod 24, one end, far away from the triaxial output gear box 23, of the screw rod 24 extends to the upper end of a supporting plate 214 and is fixed with the screw rod 24 through a shaft support 215, and second hard rails 212 are fixedly connected to inner walls of two sides of a second box body 21; the second box body 21 further comprises a second bearing assembly 217, two sides of the inner wall of the foremost end of the inner chamber of the second box body 21 are fixedly connected with the second bearing assembly 217, one end of the bottom plate of the second box body 21 close to the second mounting plate 211 is movably connected with a fourth roller assembly 213, and one end of the bottom plate of the second box body 21 close to the second bearing assembly 217 is movably connected with a fifth roller assembly 216;
the equal fixedly connected with of second box body 21 is a set of at least first side mounting panel 25, all is connected with two first compound bearings 251 on the first side mounting panel 25, and two first compound bearings 251 are the diagonal symmetry setting, and at least one helical gear 26 is all installed at the outside both ends of second box body 21.
In this embodiment, the main box body 11 is used as a fixed main supporting box, the multiple sets of first composite bearings 251 on the outer side of the second box body 21 are tightly attached to the first hard rails 115 on the two sides of the inner wall of the main box body 11, meanwhile, the roller assemblies 27 are tightly attached to the inner side of the main box body 11, the front end of the second box body 21 is supported on the first bearing assembly 117 at the front end of the main box body 11, so that the second box body 21 can slide on the helical rack 114 of the main box body 11 along a fixed track, and is engaged with the helical rack 114 through the first side mounting plate 25, thereby effectively ensuring that the second box body 21 cannot fall off in the moving process, and causing potential safety hazards.
Referring to fig. 8-10, the third box 3 is rectangular, the third box 3 includes a third box body 31, the outer sides of the third box body 31 are fixedly connected with at least one group of second side mounting plates 33, the second side mounting plates 33 are connected with two second composite bearings 331, the two second composite bearings 331 are diagonally symmetrical, the third box body 31 includes a nut bottom plate 311, and the positions of the inner cavity of the nut bottom plate 311 corresponding to the positions 222 are fixedly connected with a screw-nut pair 32 matched with the nut 222; one end of the third box body 31 close to the nut bottom plate 311 is movably connected with a sixth roller assembly 312, and the front end of the third box body 31 is movably connected with a seventh roller assembly 313.
In this embodiment, the multiple sets of second composite bearings 331 outside the third box body 31 are tightly attached to the second hard rail 212 of the second box body 21, meanwhile, the side rollers are tightly attached to the inner wall of the second box body 21, and the front end of the third box body 31 is supported on the second bearing assembly 217 at the front end of the second box body 21, so that the third box body 31 can slide on the second hard rail 212 of the second box body 21 along a fixed track, thereby effectively ensuring that the second box body 21 cannot fall off in the moving process, and causing a potential safety hazard.
The application method comprises the following steps: the main box 1 is kept still, the telescopic motor 22 installed in the inner cavity of the second box body 21 is started, the speed reducer is driven by the telescopic motor 22 to be fixed on the input shaft of the triaxial output gear box 23 through the coupler to start rotating, so that the transmission shaft on the triaxial output gear box 23 is driven to rotate in the same direction, and further the helical gear 26 is driven to advance or retreat along the first hard rail 115, meanwhile, the other output transmission shaft of the triaxial output gear box 23 is connected with the lead screw 24, so that the lead screw 24 is fixedly connected with the lead screw nut pair 32 installed on the nut bottom plate 311, and therefore the third box body 31 advances or retreats along the second hard rails 212 on two sides of the inner wall of the second box body 21. Since the three-shaft output gearbox 23 is all 1: 1 output, the stroke that the effectual second box body 21 that has guaranteed advances or retreats is unanimous with the stroke of third box body 31, reaches the unanimous distance that stretches out or retreats simultaneously to drive the belt and stretch out or retreat.
The working principle is as follows: referring to fig. 11, the staff places the flexible machine in the place that needs work through support frame 14, according to actual conditions, start driving motor 12, make driving motor 12's axis of rotation drive sprocket 15 rotate, thereby drive main drive cylinder 13 through chain 16 and rotate, start flexible motor 22 and make flexible motor 22's axis of rotation drive helical gear 26 and lead screw 24 simultaneously through triaxial output gear box 23 and rotate, until reaching required length, and then drive the belt and stretch out or retreat, also can start the belt simultaneously rotatory and stretch out and draw back. The belt conveyor is simple in equipment installation, long in service life, suitable for general popularization and application, high in stability, strong in safety, high in running speed, stable in running and suitable for large-inclination belt conveying occasions, and safety accidents are not easy to happen due to the fact that all the structures are rigid.
The second embodiment is different from the first embodiment in that a plurality of telescopic motors 22 are installed in the inner cavity of the second box body 2, and the rotating shafts of the plurality of telescopic motors 22 are connected with a three-shaft output gear box 23 for multi-stage transmission.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a telescoping device for belt telescopic machine, a serial communication port, including main tank body (1), main tank body (1) includes main tank body (11), the first hard rail (115) of the equal fixedly connected with of both sides inner wall of main tank body (11), the equal fixedly connected with bevel rack (114) in top position of first hard rail (115), the inner chamber of main tank body (11) has cup jointed at least one second box (2) through bevel rack (114), first hard rail (115), second box (2) include second tank body (21), the equal fixedly connected with second hard rail (212) of both sides inner wall of second tank body (21), the inner chamber of second tank body (21) has cup jointed third box (3) through second hard rail (212).
2. The telescopic device for the belt stretching machine as claimed in claim 1, wherein the main box body (1) comprises a main transmission roller (13), a first mounting plate (111) is fixedly connected to the rear end of the inner cavity of the main box body (11), a driving motor (12) is fixedly connected to the upper end of the first mounting plate (111), a chain wheel (15) is sleeved on the outer side of a rotating shaft of the driving motor (12), and a chain (16) is commonly connected between the rotating shaft of the main transmission roller (13) and the chain wheel (15) on the side corresponding to the driving motor (12);
the main box body (11) further comprises a second roller assembly (113), the second roller assembly (113) is movably connected to the tail end of the main box body (11), one end, far away from the second roller assembly (113), of an inner cavity of the main box body (11) is movably connected with a first roller assembly (112), the front end of the main box body (11) is movably connected with a third roller assembly (116), and two sides of the inner wall of the foremost end of the inner cavity of the main box body (11) are fixedly connected with first bearing assemblies (117);
both ends all fixedly connected with support frame (14) around the outside of main tank body (11).
3. The telescopic device for a belt telescopic machine as claimed in claim 1, wherein at least one set of first side mounting plates (25) is fixedly connected to the outer side of the second box body (21), two first composite bearings (251) are connected to the first side mounting plates (25), the two first composite bearings (251) are arranged in diagonal symmetry, and the distance between the two first composite bearings (251) is matched with the height of the first hard rail (115).
4. A telescopic device for a belt telescopic machine according to claim 1, characterized in that at least one helical gear (26) is installed at both outer ends of said second casing body (21), and the outer sides of said helical gears (26) are engaged with the helical rack (114).
5. The telescopic device for a belt telescopic machine according to claim 1, wherein the second casing body (21) includes a second mounting plate (211), a support plate (214), and a shaft support (215), a telescopic motor (22) is fixedly connected to a rear end of an upper end of the second mounting plate (211), a three-shaft output gear box (23) is fixedly connected to a front end of an upper end of the second mounting plate (211), a rotating shaft of the telescopic motor (22) penetrates through an inner cavity of the three-shaft output gear box (23) to be connected with a lead screw (24), and one end of the lead screw (24) far away from the three-shaft output gear box (23) extends to an upper end of the support plate (214) and is fixed with the shaft support (215).
6. The telescopic device for the belt compressor as claimed in claim 1, wherein the second casing body (21) further comprises a second bearing assembly (217), both sides of the inner wall of the foremost end of the inner chamber of the second casing body (21) are fixedly connected with the second bearing assembly (217), one end of the bottom plate of the second casing body (21) close to the second mounting plate (211) is movably connected with a fourth roller assembly (213), and one end of the bottom plate of the second casing body (21) close to the second bearing assembly (217) is movably connected with a fifth roller assembly (216);
the two sides of the tail end of the outer side of the second box body (21) are fixedly connected with roller assemblies (27), and the two ends, far away from the roller assemblies (27), of the two roller assemblies are attached to the inner wall of the main box body (11).
7. The telescopic device for a belt telescopic machine according to claim 1, wherein the third casing (3) comprises a third casing body (31), at least one set of second side mounting plates (33) is fixedly connected to the outer side of the third casing body (31), two second composite bearings (331) are connected to the second side mounting plates (33), the two second composite bearings (331) are arranged in diagonal symmetry, and the distance between the two second composite bearings (331) is matched with the height of the second hard rail (212).
8. The telescopic device for the belt compressor as claimed in claim 1, wherein the third box body (31) comprises a nut base plate (311), and a screw-nut pair (32) matched with the nut base plate (222) is fixedly connected to a position of an inner cavity of the nut base plate (311) corresponding to the nut base plate (222);
one end, close to the nut bottom plate (311), of the third box body (31) is movably connected with a sixth roller assembly (312), and the front end of the third box body (31) is movably connected with a seventh roller assembly (313).
9. A telescopic device for a belt telescopic machine according to claim 1, characterized in that the inner cavity of said second casing (2) is equipped with a plurality of telescopic motors (22), and the rotating shafts of said plurality of telescopic motors (22) are all connected with a three-shaft output gear box (23).
10. A method for using a telescopic device for a belt compressor according to any one of claims 1 to 9, comprising the steps of: the main box body (1) is kept still, the second box body (21) moves forwards or backwards along the first hard rail (115), and the third box body (31) moves forwards or backwards along the second hard rails (212) on two sides of the inner wall of the second box body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149430.6A CN113753499A (en) | 2021-09-29 | 2021-09-29 | Telescopic device for belt telescopic machine and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149430.6A CN113753499A (en) | 2021-09-29 | 2021-09-29 | Telescopic device for belt telescopic machine and use method thereof |
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| CN113753499A true CN113753499A (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111149430.6A Withdrawn CN113753499A (en) | 2021-09-29 | 2021-09-29 | Telescopic device for belt telescopic machine and use method thereof |
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| FR2465662A1 (en) * | 1979-01-16 | 1981-03-27 | Gaudin Sa | Conveyor belt for food-stuffs - has retractable extension allowing removal of belt for cleaning actuated via lever and gear |
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| CN105805265A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Multistage precise transmission telescopic mechanism |
| CN204847143U (en) * | 2015-07-18 | 2015-12-09 | 范宏峰 | Special light -duty telescopic belt conveyer |
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Application publication date: 20211207 |