A mobile crusher

Abstract

The present invention relates to the technical field of crushers, and particularly relates to a mobile crusher, which comprises a front-end support frame and a vehicle frame connected to each other. A belt conveyor is connected to one end of the front-end support frame away from the vehicle frame. A magnetic separator is provided on the vehicle frame near one end of the front-end support frame. The front-end support frame includes a support frame body. A belt conveyor mounting seat is provided at one end of the support frame body. A first connection structure is provided at the other end of the support frame body. A support seat is further provided at the bottom of the front-end support frame between the first connection structure and the belt conveyor mounting seat. A second connection structure is provided at one end of the vehicle frame near the front-end support frame. The front-end support frame and the vehicle frame are connected through the first connection structure and the second connection structure. The present invention enables the docking of the front-end support frame and the vehicle frame to be completed without a gantry crane, greatly reducing the installation time, being better adapted to various working conditions, prolonging the service life of the cylinder, providing safety guarantee for workers when maintaining the equipment, and greatly improving the safety factor.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, and particularly to a mobile crusher. Background Art

[0002] Crushers are used in the mining, engineering and industrial fields. The mined materials are crushed by the crusher to a certain particle size for subsequent handling and use. When conducting large-scale mining, the crusher needs to be installed. Before installation, piling needs to be carried out at the mining site, and then each component of the crusher is assembled. For example, when connecting and assembling the front support frame and the vehicle frame of the crusher, currently, most of them adopt the connection method of inserting a pin shaft into the round holes of the front support frame and the vehicle frame. This connection method has difficulties in positioning, and it is necessary to use a crane to lift the front end before installation. This operation takes a long time. For example, at a construction site or in the wild, without a crane, the front support frame is heavy and large, and it will be impossible to quickly dock with the vehicle frame, resulting in installation difficulties and delaying the construction period. Moreover, in the current mobile crusher with a front screening body, the support and positioning of the finished belt often need to be installed on the screening frame. The screening frame is large and heavy, not only occupying space and consuming a large amount of materials, but also being difficult to install.

[0003] In addition, the current mobile crusher also has problems such as an overly large sheet metal door frame, the easy failure and non-durability of the cylinder used to lift the sheet metal door, the safety hazards caused by insufficient cylinder lifting force, and the mechanical limit of the sheet metal door frame. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems, providing a mobile crusher that has the advantages that the docking of the front support frame and the vehicle frame of the mobile crusher does not require a crane to complete, greatly reducing the installation time, and being able to better adapt to various working conditions. At the same time, it also extends the service life of the cylinder and provides safety guarantees for workers when maintaining the equipment, greatly improving the safety factor.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A mobile crusher includes a front support frame and a vehicle frame. One end of the vehicle frame is connected to one end of the front support frame. The vehicle frame is provided with a crushing main machine, a power system, a transmission system and a working platform. An inlet hopper is provided at the end of the vehicle frame away from the front support frame. A belt conveyor is connected to the end of the front support frame away from the vehicle frame. The front support frame includes a support frame body. A belt conveyor mounting seat for installing the belt conveyor is provided at one end of the support frame body. A first connection structure is provided at the other end of the support frame body. A support seat is further provided between the first connection structure and the belt conveyor mounting seat at the bottom of the front support frame. A second connection structure is provided at the end of the vehicle frame close to the front support frame. The front support frame and the vehicle frame are connected through the first connection structure and the second connection structure.

[0007] In the present invention, further, the first connection structure includes a connection head, and the connection head includes two first connection plates arranged side by side and spaced apart. One ends of the two first connection plates are respectively connected to the support frame body, and V-shaped openings are formed at the other ends of the two first connection plates. The V-shaped openings include a semi-circular hole and a conical hole that are communicated with each other, and first through holes located on the same axis are formed on the upper conical part and the lower conical part that form the conical hole.

[0008] In the present invention, further, the second connection structure includes a second connection plate. One end of the second connection plate is fixedly connected to the vehicle frame. A through hole is formed on the second connection plate, and a cross bar perpendicular to the second connection plate is inserted through the through hole. Both ends of the cross bar are fixedly connected to the side surface of the second connection plate through fixing plates, and the end of the fixing plate away from the cross bar is also fixedly connected to the vehicle frame (to further fix the cross bar). Second through holes are respectively formed on the two fixing plates located on both sides of the second connection plate; both ends of the cross bar are inserted into the V-shaped openings of the two first connection plates and are clamped in the semi-circular holes. The second connection plate is inserted between the two first connection plates, and bolts are inserted through the first through holes and the second through holes to fixedly connect the first connection structure and the second connection structure.

[0009] In the present invention, further, the belt conveyor mounting seat includes a bottom plate, an end plate, and a top plate. One end of the bottom plate is connected to the lower support plate of the support frame body, and one end of the top plate is connected to the upper support plate of the support frame body. The other ends of the bottom plate and the top plate are respectively connected to the two ends of the end plate. A plurality of strip holes are formed on both the bottom plate and the end plate. The bottom plate is fixedly connected to the bottom of the side fixing seat of the belt conveyor through screws inserted through the strip holes, and the end plate is fixedly connected to the vertical plate of the side fixing seat of the belt conveyor through screws inserted through the strip holes.

[0010] In the present invention, further, the side fixing seat is arranged on the side surface close to one end of the belt conveyor. The side fixing seat includes a semi-frame-shaped fixing frame, a vertical plate, and a limiting plate that are parallel and spaced apart. The sealed side of the semi-frame-shaped fixing frame is fixedly connected to the side support of the belt conveyor close to the end part. The vertical plate is fixedly arranged at one end of the semi-frame-shaped fixing frame. A plurality of strip holes with different heights are formed on the vertical plate, so that the end plate and the vertical plate can be connected in a height-adjustable manner through screws inserted through the strip holes; the limiting plate is arranged at the other end of the semi-frame-shaped fixing frame. One end of the limiting plate is fixed to the bottom of the semi-frame-shaped fixing frame, and the other end is inserted into the top of the semi-frame-shaped fixing frame. A pull rod connection seat is further arranged between the top of the semi-frame-shaped fixing frame and the limiting plate and the vertical plate, so as to fixedly connect the belt conveyor and the vehicle frame through the pull rod connection seat and the pull rod thereon.

[0011] In the present invention, further, there are two limiting plates which are spaced apart and arranged at the other end of the semi-frame-shaped fixing bracket, and the pull rod connecting seat is fixedly arranged between the two limiting plates.

[0012] In the present invention, further, a protective cover for protecting the transmission system is provided on the vehicle frame. The upper end of the protective cover is hinged with a cover plate for covering the transmission system, and between the inner wall of the cover plate and the protective cover, there is a cylinder and a self-locking limiting device for opening the cover plate.

[0013] In the present invention, further, the self-locking limiting device includes a push rod and a bent plate. One end of the push rod is fixedly connected to the inner wall of the protective cover. The bent plate is a bent plate with an L-shaped cross-section and integrally formed by two panels. One panel of the bent plate is fixedly arranged on the inner wall of the cover plate, and a hook-shaped hole is formed on the other panel. The other end of the push rod is movably arranged on the hook-shaped hole.

[0014] In the present invention, further, the feed hopper includes hopper side walls arranged on both sides of the feed inlet. Each hopper side wall includes a first hopper side wall and a second hopper side wall which are hinged to each other. The first hopper side wall is fixedly arranged at the side top end of the feed inlet, and each second hopper side wall is supported on the rear end of the vehicle frame through a foldable self-locking mechanism.

[0015] In the present invention, further, the foldable self-locking mechanism includes a first oil cylinder, a second oil cylinder and a plug. The fixed end of the first oil cylinder is fixedly supported on the rear end of the vehicle frame, and the piston rod end of the first oil cylinder is fixedly connected to the surface of the second hopper side wall facing away from the feed inlet. One end of the plug is a tip, and the other end is an open end. The fixed end of the second oil cylinder is fixed on the higher side of the surface of the second hopper side wall facing away from the feed inlet, and the piston rod end of the second oil cylinder is fixedly connected to the open end of the plug. The tip of the plug can pass through the lower side of the second hopper side wall and be inserted into the first hopper side wall.

[0016] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects:

[0017] In the present invention, a first connection structure is provided at one end of the front support frame. The first connection structure includes two first connection plates arranged side by side and at intervals. Class V-shaped openings including semi-circular holes and tapered holes are formed at one ends of the two first connection plates, and first through holes located on the same axis are formed on the upper tapered part and the lower tapered part forming the tapered hole. And a second connection structure is provided at one end of the vehicle frame close to the front support frame. The second connection structure includes a second connection plate. A cross bar perpendicular to the second connection plate is inserted through the second connection plate. Both ends of the cross bar are fixedly connected to the side surface of the second connection plate through fixing plates. Second through holes are respectively formed on the two fixing plates located on both sides of the second connection plate. When the front support frame is connected to the vehicle frame, both ends of the cross bar can be quickly inserted into the class V-shaped openings of the two first connection plates and clamped in the semi-circular holes. The second connection plate is inserted between the two first connection plates, and fixing bolts are inserted through the first through holes and the second through holes, so that the front support frame and the vehicle frame can be connected through the first connection structure and the second connection structure, thereby achieving the purpose of quickly positioning and installing the front support frame, making the docking of the front support frame and the vehicle frame of the mobile crusher not require a crane to complete, greatly reducing the installation time, and being able to better adapt to various working conditions, especially applicable to the situation where the front support frame needs to be installed or replaced in the wild and on the construction site.

[0018] In addition, the self-locking limit device provided in the present invention can mechanically limit the cover plate (i.e., the sheet metal door), greatly reducing the force received by the cylinder used to lift the cover plate, protecting the cylinder well, extending the service life of the cylinder, and the self-locking limit device can also provide safety assurance for workers when maintaining the equipment, greatly improving the safety factor, and solving the safety hazards caused by the too large cover plate, the easy failure and non-persistence of the cylinder, and the insufficient lifting force of the cylinder, as well as the mechanical limit problem of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the mobile crusher of the present invention Figure 1 ;

[0020] Figure 2 is a schematic connection diagram of the vehicle frame, the front support frame and the belt conveyor in the present invention;

[0021] Figure 3 is Figure 2 a partial enlarged view of A in

[0022] Figure 4 is a schematic diagram of the structure of the front support frame in the present invention;

[0023] Figure 5 is a schematic diagram of the first connection plate of the front support frame of the present invention;

[0024] Figure 6Schematic diagram of the second connection structure on the frame in the present invention;

[0025] Figure 7 is Figure 2 partial enlarged view at B in;

[0026] Figure 8 Schematic diagram of the installation structure of the side fixing seat on the finished belt conveyor in the present invention;

[0027] Figure 9 Overall structure schematic of the mobile crusher of the present invention Figure 2 ;

[0028] Figure 10 Schematic diagram of the structure of the self-locking limit device in the present invention;

[0029] Figure 11 is Figure 10 partial enlarged view at I in;

[0030] Figure 12 Schematic diagram of the structure of the feed hopper in the present invention;

[0031] Figure 13 Schematic diagram of the structure of the mobile crusher of the present invention after adding the second side belt.

[0032] 1 - Front-end support frame, 2 - Frame, 3 - Crawler travel assembly, 4 - Working platform, 5 - Belt conveyor, 51 - Side fixing seat, 511 - Semi-frame fixing frame, 512 - Vertical plate, 513 - Limiting plate, 514 - Tie rod connection seat, 6 - Electromagnet, 7 - Crushing main machine, 8 - Power system, 9 - Transmission system, 10 - Feed hopper, 101 - First hopper side wall, 102 - Second hopper side wall, 103 - First oil cylinder, 104 - Second oil cylinder, 105 - Plug-in part, 11 - Support frame body, 12 - Belt conveyor mounting seat, 121 - Bottom plate, 122 - End plate, 123 - Top plate, 124 - Longitudinal hole, 13 - First connection structure, 131 - First connecting plate, 132 - V-shaped opening, 1321 - Semi-circular hole, 1322 - Tapered hole, 1323 - First through hole, 14 - Support seat, 15 - Second connection structure, 151 - Second connecting plate, 152 - Cross bar, 153 - Fixed plate, 154 - Second through hole, 16 - Cover plate, 17 - Cylinder, 18 - Self-locking limit device, 181 - Thrust rod, 182 - Bent plate, 183 - Hook-shaped hole, 19 - Pre-screening and screening machine, 20 - Main belt, 21 - Return material screen, 22 - Side belt, 23 - Transition belt, 24 - Return material belt, 25 - Return material hopper, 26 - Flat feed belt, 27 - Tail material belt, 28 - Protective cover, 29 - Second side belt. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "first", "second" and similar expressions used herein are for illustrative purposes only.

[0035] Embodiment 1

[0036] As Figure 1 shown, a mobile crusher in this embodiment is similar to the overall structure of an existing impact crusher, including a front support frame 1, a vehicle frame 2, a crawler walking assembly 3, etc. One end of the front support frame 1 is connected to one end of the vehicle frame 2. A belt conveyor 5 is fixedly connected to the end of the front support frame 1 far from the vehicle frame 2. A magnetic separator 6 is also provided on the vehicle frame 2 near one end of the front support frame 1. The crawler walking assembly 3 is disposed on the bottom side of the vehicle frame 1. A power system 8, a transmission system 9, a working platform 4, a feed hopper 10, a pre-screening machine 19, a crushing main machine 7, a main belt 20, a return belt 24, a return hopper 25, and a flat feed belt 26, a tailing belt 27, etc. are provided on the vehicle frame 2. A return material screen 21 is fixedly provided above the belt conveyor 5. A side belt 22, a transition belt 23, etc. are provided on the front support frame 1. The general working process is as follows: First, feed materials through the feed hopper 10, and perform pre-screening through the pre-screening machine 19. After pre-screening, three kinds of materials are obtained. According to the particle size of the materials, one of the three kinds of materials enters the crushing main machine 7 for crushing, one enters the flat feed belt 26 and then directly enters the return material screen 21 without being crushed, and one enters the tailing belt 27. The materials crushed by the crushing main machine 7 are then conveyed through the main belt 20 into the return material screen 21. The materials coming out of the return material screen 21 are also divided into three destinations according to the particle size of the materials. One enters the belt conveyor 5 with a finished product belt to obtain a finished product, one enters the side belt 22 to obtain another finished product, and one enters the transition belt 23 and then enters the return belt 24 through the transition belt 23, and finally enters the return hopper 25. The above structure and working process are basically the same as those of the prior art, so no more description will be given.

[0037] The difference is that in the present invention, as Figures 2 to 6As shown, the front support frame 1 includes a support frame body 11. One end of the support frame body 11 is provided with a belt conveyor mounting seat 12 for connecting and mounting a belt conveyor 5. The other end of the support frame body 11 is provided with a first connection structure 13. A support seat 14 is further provided between the first connection structure 13 and the belt conveyor mounting seat 12 at the bottom of the front support frame 1, so that a jack can be placed at the bottom of the front support frame 1 to lift the front support frame 1, making the front support frame 1 convenient for disassembly, assembly and replacement. A second connection structure 15 is provided at one end of the vehicle frame 2 close to the front support frame 1. The front support frame 1 and the vehicle frame 2 are connected through the first connection structure 13 and the second connection structure 15. By providing the first connection structure 13 and the second connection structure 15 to connect the front support frame 1 and the vehicle frame 2, when it is necessary to dock the front support frame 1 and the vehicle frame 2, only need to place the front support frame 1 on the ground and drive the vehicle frame 2 over in the form of crawler walking, then the docking of the front support frame 1 and the vehicle frame 2 can be completed. Through this setting, the docking of the front support frame 1 and the vehicle frame 2 of the mobile crusher will not require a crane to complete, greatly reducing the installation time and being able to better adapt to various working conditions, especially suitable for the situation where the front support frame 1 needs to be replaced in the wild and on the construction site.

[0038] As a further specific technical solution, in this embodiment, the first connection structure 13 includes a connection head, and the connection head includes two first connection plates 131 arranged side by side and at intervals. One end of each of the two first connection plates 131 is connected to the support frame body 11. Class V-shaped openings 132 are formed at the other ends of the two first connection plates 131. The class V-shaped opening 132 includes a semi-circular hole 1321 and a tapered hole 1322 that are communicated with each other. First through holes 1323 located on the same axis are formed on the upper tapered portion and the lower tapered portion that form the tapered hole 1322. The second connection structure 15 includes a second connection plate 151. One end of the second connection plate 151 is fixedly connected to the vehicle frame 2. A through hole is formed on the second connection plate 151, and a cross bar 152 perpendicular to the second connection plate 151 is inserted through the through hole. Both ends of the cross bar 152 are fixedly connected to the side surface of the second connection plate 151 through fixing plates 153. One end of the fixing plate 153 away from the cross bar 152 is also fixedly connected to the vehicle frame 2 to further fix the cross bar 152. Second through holes 154 are respectively formed on the two fixing plates 153 located on both sides of the second connection plate 151; both ends of the cross bar 152 are inserted into the class V-shaped openings 132 of the two first connection plates 131 and are clamped in the semi-circular holes 1321. The second connection plate 151 is inserted between the two first connection plates 131. Bolts are inserted through the first through holes 1323 and the second through holes 154 to fixedly connect the first connection structure 13 and the second connection structure 15. By forming a class V-shaped opening 132 including a semi-circular hole 1321 and a tapered hole 1322 that are communicated with each other on the first connection plate 131, and fixedly inserting the cross bar 152 through the second connection plate 152 fixedly connected to the vehicle frame 2, the cross bar 152 can be quickly inserted into the class V-shaped opening 132 and the bolts are assisted in limiting, so as to achieve the purpose of quickly positioning and installing or quickly replacing the front support frame 1.

[0039] As a further specific technical solution, as Figure 2 , Figure 4 , Figure 7 and Figure 8As shown in the figure, in this embodiment, the belt conveyor mounting seat 12 includes a bottom plate 121, end plates 122 and a top plate 123. One end of the bottom plate 121 is connected to the lower support plate of the support frame body 11, one end of the top plate 123 is connected to the upper support plate of the support frame body 11, the other ends of the bottom plate 121 and the top plate 123 are respectively connected to both ends of the end plate 122. A plurality of strip holes 124 are formed in both the bottom plate 121 and the end plate 122. The bottom plate 121 is connected to the bottom of the side fixing seat 51 of the belt conveyor 5 through screws passing through the strip holes, and the end plate 122 is connected to the vertical plate of the side fixing seat of the belt conveyor 5 through screws passing through the strip holes. The side fixing seat 51 is arranged on the side close to one end of the belt conveyor 5. The side fixing seat 51 includes a semi-frame-shaped fixing frame 511 and vertical plates 512 and limiting plates 513 that are parallel and spaced apart. The sealed side of the semi-frame-shaped fixing frame 511 is fixedly connected to the bracket at one end of the belt conveyor 5. The vertical plate 512 is fixedly arranged at one end of the semi-frame-shaped fixing 511 frame. A plurality of strip holes with different heights are formed in the vertical plate 512, so that the end plate 122 and the vertical plate 512 can be connected in a height-adjustable manner through screws passing through the strip holes. There are two limiting plates 513. The two limiting plates 513 are spaced apart and arranged at the other end of the semi-frame-shaped fixing frame 511, and the height of the limiting plates 513 is greater than the height of the semi-frame-shaped fixing frame 511. One end of the limiting plate 513 is fixed to the bottom of the frame-shaped fixing frame 511, and the other end is inserted into the top of the frame-shaped fixing frame 511. A tie rod connection seat 514 is further arranged between the two limiting plates 513 at the top of the frame-shaped fixing frame 511, so as to fixedly connect the belt conveyor 5 and the vehicle frame 2 through the tie rod connection seat 514 and the tie rod thereon. Through the arrangement of the belt conveyor mounting seat 12 and the side fixing seat 51 in this embodiment, the front support frame 1 can be directly connected and fixed to one end of the belt conveyor 5, eliminating the support beam (screen frame) for supporting the belt conveyor 5, which is not only convenient for disassembly and assembly, but also saves costs.

[0040] As a further specific technical solution, as Figures 9 to 11As shown in the figure, in this embodiment, a protective cover 28 for installing a transmission system 9 is provided on a vehicle frame 2. The protective cover 28 is located below a working platform 4. The upper end of the protective cover 28 is hinged with a cover plate 16 (sheet metal door) for covering the transmission system 9. A cylinder 17 and a self-locking limit device 18 for opening the cover plate 16 are arranged between the cover plate 16 and the inner side surface of the protective cover 28. The self-locking limit device 18 includes a push rod 181 and a bent plate 182. One end of the push rod 181 is fixedly connected to the inner side surface of the protective cover 28. The bent plate 182 is a bent plate 182 with an L-shaped cross section and integrally formed by two panels. One panel of the bent plate 182 is fixedly arranged on the inner wall of the cover plate 16, and a hook-shaped hole 184 is formed on the other panel. The other end of the push rod 181 is movably arranged on the hook-shaped hole 183. As the cylinder 17 extends to open the cover plate 16, one end of the push rod 181 moves from the long straight part of the hook-shaped hole 183 to the hook part. When one end of the push rod 181 is clamped at the end of the hook part, the self-locking limit device 18 plays a role of self-locking and limiting the cover plate 16. Since after the cover plate 16 is lifted to a certain position, the self-locking limit device 18 can mechanically limit the cover plate 16. At this time, the force received by the cylinder 17 is greatly reduced, which well protects the cylinder 17 and extends the service life of the cylinder 17. Moreover, the self-locking limit device 18 can also provide safety assurance for workers to maintain the equipment, greatly improving the safety factor, and solving the safety hazards caused by the too large cover plate 16, the easy failure and non-persistence of the cylinder 17, and the insufficient jacking force of the cylinder 17, as well as the mechanical limit problem of the cover plate 16.

[0041] As a further specific technical solution, as Figure 9 and Figure 12As shown in the figure, in this embodiment, the feed hopper 10 includes hopper side walls provided on both sides of the feed inlet. Each hopper side wall includes a first hopper side wall 101 and a second hopper side wall 102 that are hinged to each other. The first hopper side wall 101 is fixedly provided on the side top end of the feed inlet. Each second hopper side wall 102 is supported on the rear end of the vehicle frame 2 through a foldable self-locking mechanism. Specifically, the foldable self-locking mechanism includes a first oil cylinder 103, a second oil cylinder 104, and a plug 105. Among them, the first oil cylinder 103 is a larger oil cylinder, the second oil cylinder 104 is a smaller oil cylinder, and the plug 105 is a bolt. The fixed end of the first oil cylinder 103 is fixedly supported on the rear end of the vehicle frame 2. The piston rod end of the first oil cylinder 103 is fixedly connected to the side of the second hopper side wall 102 facing away from the feed inlet. One end of the plug 105 is a tip, and the other end is an open end. The fixed end of the second oil cylinder 104 is fixed on the higher side of the side of the second hopper side wall 102 facing away from the feed inlet. The piston rod end of the second oil cylinder 104 is fixedly connected to the open end of the plug 105. The tip of the plug 105 can pass through the lower side of the second hopper side wall 102 and be inserted into the first hopper side wall 101. When in the working state, first, the second hopper side wall 102 is lifted in place by the first oil cylinder 103. After being lifted in place, the plug 105 is pushed out by the second oil cylinder 104 on the second hopper side wall 102 and inserted into the first hopper side wall 101 to achieve mechanical limit. All actions in the whole process are completed by the oil cylinders, without the need for manual climbing onto the equipment for operation, greatly improving the operation performance and safety performance of the equipment.

[0042] This setting adds the second hopper side wall 102 on the basis of the original hopper, that is, the first hopper side wall 101, to achieve the purpose of capacity expansion, solving the problem of insufficient volume of the original hopper. Moreover, the added second hopper side wall 102 can be automatically folded by the oil cylinder, without the need for manpower, which is convenient and fast. However, simply adding a foldable hopper is often not enough to withstand the impact force brought by the excavator feeding, because the folding oil cylinder cannot bear the force for a long time. Long-term force will cause the oil cylinder to fail. Once the oil cylinder fails, it will lead to safety accidents, ranging from equipment damage to personal safety. Therefore, mechanical limit is also added to lock the hopper and offset the impact force brought by the excavator feeding. The mechanical limit is achieved by the second oil cylinder 104 lifting the bolt 105, so that the plug 105 is inserted into the first hopper side wall 101 and locked.

[0043] Embodiment 2

[0044] In this embodiment, except for using another side belt instead of the transition belt, the rest are the same as those in Embodiment 1.

[0045] Specifically, after removing the original transition belt 23 and the return belt 24, a second side belt 29 is installed at the position of the original transition belt 23. The bottom end of the second side belt 29 is fixed below the top screen of the return material screen 21 to receive the discharged material from the top screen, as Figure 13 shown.

[0046] In the mobile breaking of the front-end screen body of the conventional belt, in most cases, a double-layer screen body, a side belt, a transition belt, and a return belt are configured. Under normal circumstances, two types of materials can be produced, namely, the finished product discharged from the bottom screen through the finished product belt on the belt conveyor 5 and the finished product discharged from the middle screen through the side belt 22. The top screen enters the transition belt and returns to the crusher through the return belt for re-crushing. This method is completed in the case of a belt return system. If there is a need for a double-layer screen but no return belt, or sometimes a return belt is required and sometimes not, then the second side belt 29 of this embodiment is used. This setting enables the crusher to arbitrarily switch the conveyor belt form, and two types of materials can be discharged through the side belt 22 and the second side belt 29. It can also arbitrarily select the material from the top screen or the middle screen, with multiple functions, providing more choices for customers and a wider application scenario.

[0047] The above description is a detailed description and illustration of the preferred and feasible embodiments of the present invention, but these descriptions are not intended to limit the scope of protection required by the present invention. Any equivalent changes or modifications completed under the technical guidance prompted by the present invention shall fall within the scope of patent protection covered by the present invention.

Claims

1. A mobile crusher, comprising a front support frame and a vehicle frame, one end of the vehicle frame is connected to one end of the front support frame, a crushing main machine, a power system, a transmission system and a working platform are provided on the vehicle frame, and a feed hopper is provided on the end of the vehicle frame away from the front support frame, characterized in that, One end of the front support frame away from the vehicle frame is connected with a belt conveyor. The front support frame includes a support frame body. One end of the support frame body is provided with a belt conveyor mounting seat for mounting the belt conveyor. The other end of the support frame body is provided with a first connection structure. A support seat is further provided between the first connection structure and the belt conveyor mounting seat at the bottom of the front support frame. One end of the vehicle frame close to the front support frame is provided with a second connection structure. The front support frame and the vehicle frame are connected through the first connection structure and the second connection structure. When it is necessary to dock the front support frame with the vehicle frame, only need to place the front support frame on the ground and drive the vehicle frame over in the form of crawler walking, then the docking of the front support frame and the vehicle frame can be completed. The first connection structure includes a connection head. The connection head includes two first connection plates arranged side by side and spaced apart. One end of each of the two first connection plates is connected to the support frame body. Class V-shaped openings are formed at the other ends of the two first connection plates. The class V-shaped opening includes a semi-circular hole and a tapered hole that are communicated with each other. First through holes are formed on the upper tapered part and the lower tapered part forming the tapered hole and are located on the same axis.

2. The mobile crusher according to claim 1, characterized in that, The second connection structure includes a second connection plate. One end of the second connection plate is fixedly connected to the vehicle frame. A through hole is formed on the second connection plate. A cross bar perpendicular to the second connection plate is inserted through the through hole. Both ends of the cross bar are fixedly connected to the side surface of the second connection plate through fixing plates. Second through holes are respectively formed on the two fixing plates located on both sides of the second connection plate. Both ends of the cross bar are inserted into the class V-shaped openings of the two first connection plates and are clamped in the semi-circular holes. The second connection plate is inserted between the two first connection plates. Bolts are inserted through the first through holes and the second through holes to fixedly connect the first connection structure and the second connection structure.

3. A mobile crusher according to claim 1, characterized in that, The belt conveyor mounting seat includes a bottom plate, an end plate and a top plate. One end of the bottom plate is connected to the lower support plate of the support frame body. One end of the top plate is connected to the upper support plate of the support frame body. The other ends of the bottom plate and the top plate are respectively connected to both ends of the end plate. A plurality of strip holes are formed on both the bottom plate and the end plate. The bottom plate is fixedly connected to the bottom of the side fixing seat of the belt conveyor through screws inserted through the strip holes. The end plate is fixedly connected to the side fixing seat of the belt conveyor through screws inserted through the strip holes.

4. The mobile crusher according to claim 3, characterized in that, The side fixing seat is arranged on the side surface near one end of the belt conveyor. The side fixing seat includes a semi-frame-shaped fixing frame, a vertical plate and a limiting plate which are parallel and arranged at intervals. The sealed side of the semi-frame-shaped fixing frame is fixedly connected to the side bracket at the end of the belt conveyor close to the end. The vertical plate is fixedly arranged at one end of the semi-frame-shaped fixing frame. A plurality of strip-shaped holes with different heights are formed in the vertical plate, so that the end plate and the vertical plate are connected in a height-adjustable manner through screws passing through the strip-shaped holes. The limiting plate is arranged at the other end of the semi-frame-shaped fixing frame. One end of the limiting plate is fixed to the bottom of the semi-frame-shaped fixing frame, and the other end is inserted into the top of the semi-frame-shaped fixing frame. A pull rod connecting seat is further arranged between the top of the semi-frame-shaped fixing frame and the limiting plate and the vertical plate, so as to fixedly connect the belt conveyor and the vehicle frame through the pull rod connecting seat and the pull rod thereon.

5. The mobile crusher according to claim 4, characterized in that, There are two limiting plates, and the two limiting plates are arranged at intervals at the other end of the semi-frame-shaped fixing frame. The pull rod connecting seat is fixedly arranged between the two limiting plates.

6. The mobile crusher according to claim 5, characterized in that, A protective cover for protecting the transmission system is arranged on the vehicle frame. The upper end of the protective cover is hinged with a cover plate for covering the transmission system. A cylinder and a self-locking limiting device for opening the cover plate are arranged between the cover plate and the inner wall of the protective cover.

7. The mobile crusher according to claim 6, characterized in that, The self-locking limiting device includes a push rod and a bent plate. One end of the push rod is fixedly connected to the inner wall of the protective cover. The bent plate is a bent plate with an L-shaped cross-section formed by integrally molding two panels. One panel of the bent plate is fixedly arranged on the inner wall of the cover plate, and a hook-shaped hole is formed in the other panel. The other end of the push rod is movably arranged on the hook-shaped hole.

8. A mobile crusher according to claim 1, characterized in that, The feed hopper includes hopper side walls arranged on both sides of the feed inlet. Each hopper side wall includes a first hopper side wall and a second hopper side wall which are hinged. The first hopper side wall is fixedly arranged at the side top end of the feed inlet. Each second hopper side wall is supported on the rear end of the vehicle frame through a foldable self-locking mechanism.

9. The mobile crusher according to claim 8, characterized in that, The foldable self-locking mechanism includes a first oil cylinder, a second oil cylinder and a plug-in part. The fixed end of the first oil cylinder is fixedly supported on the rear end of the vehicle frame. The piston rod end of the first oil cylinder is fixedly connected to the surface of the second hopper side wall facing away from the feed inlet. One end of the plug-in part is a tip, and the other end is an open end. The fixed end of the second oil cylinder is fixed on the higher side of the surface of the second hopper side wall facing away from the feed inlet. The piston rod end of the second oil cylinder is fixedly connected to the open end of the plug-in part. The tip of the plug-in part can pass through the lower side of the second hopper side wall and be inserted into the first hopper side wall.

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