Feeding safety protection structure and jaw crusher

Abstract

The utility model provides a kind of feeding safety protection structure and jaw crusher, belong to the technical field of crusher, including protective cover shell, multiple protective baffle and multiple counterweight. Among them, protective cover shell is installed above the feeding port of jaw crusher, and it has the discharge passage being communicated with the crushing cavity of jaw crusher. Multiple protective baffles are all hinged on protective cover shell, and sequentially distributed along the rotation axis of protective baffle. Each protective baffle has first position for mutual splicing and closing discharge passage. Multiple counterweights are one-to-one corresponding and arranged at the end of protective baffle away from discharge passage. Counterweight is used to drive protective baffle to pitch up and rotate upward to first position by dead weight after material pushes protective baffle to pitch down and enter discharge passage. The feeding safety protection structure provided by the utility model can prevent material fragments from breaking out from the crushing cavity of jaw crusher.

Description

Technical Field

[0001] This utility model belongs to the field of crusher technology, and more specifically, it relates to a feeding safety protection structure and a jaw crusher. Background Technology

[0002] A jaw crusher is a mechanical device that crushes materials using the periodic squeezing motion between a moving jaw and a fixed jaw. It achieves the crushing of materials such as ores and rocks through a combination of splitting, bending, and squeezing. This equipment features a large crushing ratio, simple structure, and reliable operation, and is widely used in coarse and medium crushing processes in industries such as mining, building materials, metallurgy, water conservancy, and chemicals.

[0003] When existing jaw crushers process materials, the strong vibrations generated by the moving jaw and stationary jaw during the extrusion process, as well as the irregular shape of the materials themselves, cause some material fragments to be ejected from the crushing chamber when some materials are crushed, posing certain safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a feeding safety protection structure and a jaw crusher, which aims to prevent material fragments from being ejected from the crushing chamber.

[0005] Firstly, this utility model provides a feeding safety protection structure, comprising: A protective cover is installed above the feed inlet of the jaw crusher and has a discharge channel that communicates with the crushing chamber of the jaw crusher. Multiple protective baffles are hinged to the protective cover and are distributed sequentially along the rotation axis of the protective baffles; each of the protective baffles has a first position for mutually joining and closing the feeding channel; and Multiple counterweights are disposed one-to-one at the end of the protective baffle away from the feeding channel; the counterweights are used to drive the protective baffle to rotate upward to the first position by their own weight after the material pushes the protective baffle to tilt downward and enter the feeding channel.

[0006] In one possible implementation, the protective baffle includes: The connecting seat is hinged to the protective cover. A baffle unit is inserted into the connecting seat; the baffle unit is provided with a positioning groove; A positioning element is disposed on the connecting seat and has an elastic degree of freedom to move toward the baffle unit; When the baffle unit is inserted into the connecting seat, the positioning member is inserted into the positioning groove so that the baffle unit is locked onto the connecting seat.

[0007] In one possible implementation, the positioning element includes: The positioning block is slidably disposed on the connecting seat, and the sliding direction is perpendicular to the insertion direction of the baffle unit; A positioning spring, with its two ends fixed to the positioning block and the connecting seat respectively, is used to push the positioning block to move toward the baffle unit; The positioning block is adapted to be inserted into the positioning groove.

[0008] In one possible implementation, the counterweight includes: A connecting screw is fixedly mounted on the connecting seat, and its axial direction is the same as the sliding direction of the corresponding positioning block; Multiple counterweight nuts are threaded onto the connecting screw; Specifically, one of the counterweight nuts near the connecting seat is defined as a limiting counterweight nut; the limiting counterweight nut abuts against the positioning block to prevent the positioning block from disengaging from the positioning groove.

[0009] In one possible implementation, the end of the positioning block opposite to the baffle unit is fixed with an extension, which extends outward through the connecting seat; the limiting counterweight nut abuts against the extension.

[0010] In one possible implementation, the baffle unit is fixedly provided with a plug-in part at one end away from the feeding channel, the positioning groove is formed on the plug-in part, and the connecting seat is provided with a slot suitable for the plug-in part to be inserted.

[0011] In one possible implementation, the end of the positioning block facing the baffle unit is a spherical end, and the positioning groove is a spherical groove suitable for insertion of the spherical end.

[0012] In one possible implementation, the plurality of protective baffles are divided into two groups, and the two groups of protective baffles are respectively arranged on opposite sides of the protective cover.

[0013] In one possible implementation, a limiting seat is fixedly provided on the outer wall of the protective cover, and a buffer pad is provided on the limiting seat; When the protective baffle is in the first position, the protective baffle abuts against the upper surface of the buffer pad to restrict the rotation of the protective baffle.

[0014] This utility model provides a feeding safety protection structure, which, compared with the prior art, has the following advantages: The protective cover is installed above the feed inlet of the jaw crusher, and the feeding channel is connected to the crushing chamber, providing a passage for material entry and simultaneously forming the first protective barrier. Multiple protective baffles are hinged to the protective cover and distributed sequentially along the rotation axis. Each protective baffle can automatically maintain its first position under the action of a counterweight, that is, they interlock and close the feeding channel, thereby blocking the direct connection between the crushing chamber and the external environment when not feeding, preventing fragments from flying out.

[0015] When material is fed into the feed inlet, its gravity impacts the protective baffle, forcing it to rotate around the hinge point. This temporarily opens the feed channel, allowing the material to smoothly enter the jaw crusher's crushing chamber. Once the material has passed through, the counterweight immediately drives the protective baffle to rotate in the opposite direction, quickly returning it to its first position and re-closing the feed channel. This ensures feeding while minimizing the risk of fragmentation due to vibration from the compression between the moving and stationary jaws or irregular material shapes during the crushing process.

[0016] Secondly, this utility model also provides a jaw crusher, including the above-mentioned feeding safety protection structure.

[0017] The jaw crusher provided by this utility model adopts the above-mentioned feeding safety protection structure, thereby ensuring feeding while minimizing the risk of fragments splashing due to the squeezing vibration between the moving jaw and the stationary jaw or the irregular shape of the material during the crushing process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the feeding safety protection structure provided in the embodiment of this utility model.

[0020] Figure 2 A cross-sectional view of the feeding safety protection structure provided in an embodiment of this utility model.

[0021] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0022] Figure 4 This is a schematic diagram of the overall structure of the jaw crusher provided in an embodiment of the present utility model.

[0023] In the diagram: 1. Protective cover; 11. Feeding channel; 2. Jaw crusher; 3. Protective baffle; 31. Connecting seat; 311. Slot; 32. Baffle unit; 321. Positioning groove; 322. Insertion part; 33. Positioning component; 331. Positioning block; 332. Positioning spring; 333. Extension part; 4. Counterweight; 41. Connecting screw; 42. Counterweight nut; 51. Limiting seat; 52. Buffer pad. Detailed Implementation

[0024] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Please see Figures 1 to 4 The present invention will now describe a feeding safety protection structure.

[0026] Please see Figure 1 , Figure 2 and Figure 4 A feeding safety protection structure includes a protective cover 1, multiple protective baffles 3, and multiple counterweights 4. The protective cover 1 is installed above the feed inlet of a jaw crusher 2 and has a discharge channel 11 communicating with the crushing chamber of the jaw crusher 2. The multiple protective baffles 3 are hinged to the protective cover 1 and are distributed sequentially along the rotation axis of the protective baffles 3. Each protective baffle 3 has a first position for mutual assembly and sealing of the discharge channel 11. The multiple counterweights 4 are correspondingly located at the ends of the protective baffles 3 furthest from the discharge channel 11. The counterweights 4 are used to rotate the protective baffles 3 upwards to the first position by their own weight after the material pushes the protective baffles downwards and enters the discharge channel 11.

[0027] In the non-feeding state, the counterweight 4 drives the corresponding protective baffle 3 to rotate around the hinge axis by its own weight, so that all the protective baffles 3 move together to the first position. At this time, the edges of each protective baffle 3 are joined together, completely sealing the feeding channel 11. The material fragments generated during the crushing process are blocked by the protective cover 1 and the closed protective baffle 3, and cannot be splashed out from the feed port, thus eliminating the safety hazard.

[0028] When feeding is required, the material is dropped from above the protective cover 1. The material's own weight acts on the protective baffle 3. This weight is greater than the weight of the counterweight 4, which pushes the protective baffle 3 to rotate in the opposite direction around the hinge axis, causing the originally assembled protective baffle 3 to separate. The feeding channel 11 opens, and the material smoothly enters the crushing chamber along the feeding channel 11.

[0029] After the material has completely entered the crushing chamber, the weight of the material on the protective baffle 3 disappears, and the counterweight 4 drives the protective baffle 3 to return to the first position, re-closing the feeding channel 11. No additional power is required. The automatic opening and closing is achieved by the balance between the weight of the material and the weight of the counterweight 4. This does not affect the normal feeding efficiency and can maintain the closed protection during the crushing process. At the same time, the overall structure of the protective cover 1 can further block the fragments splashed from the side. Combined with the dynamic closure of the protective baffle 3, a double protection is formed, which significantly improves the operational safety of the jaw crusher 2 in the coarse and medium crushing processes. Moreover, the structure is simple and reliable, and it is compatible with the installation requirements of the existing jaw crusher 2 without the need for major modifications to the main body of the equipment.

[0030] In some possible embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The protective baffle 3 includes a connecting seat 31, a baffle unit 32, and a positioning member 33. The connecting seat 31 is hinged to the protective housing 1. The baffle unit 32 is inserted into the connecting seat 31. A positioning groove 321 is formed on the baffle unit 32. The positioning member 33 is disposed on the connecting seat 31 and has an elastic degree of freedom to move toward the baffle unit 32. When the baffle unit 32 is inserted into the connecting seat 31, the positioning member 33 is inserted into the positioning groove 321, thereby locking the baffle unit 32 onto the connecting seat 31.

[0031] During the operation of the jaw crusher 2, the baffle unit 32 is in direct contact with the falling material, bearing the impact and friction of the material. It is the most easily worn or damaged component of the protective baffle 3. When the baffle unit 32 experiences excessive wear or partial damage, it is not necessary to disassemble the entire protective baffle 3. Simply use external operation to allow the positioning element 33 to overcome the elastic force and disengage from the positioning groove 321. The damaged baffle unit 32 can then be pulled out of the insertion structure of the connecting seat 31. After inserting the new baffle unit 32 back into the connecting seat 31, the positioning element 33 will automatically reset under the action of elastic force and insert into the positioning groove 321 of the new baffle unit 32, thus completing the replacement. This significantly reduces maintenance difficulty and costs, as only the worn baffle unit 32 needs to be replaced, reducing the consumption of spare parts.

[0032] In some possible embodiments, please refer to Figure 3 The positioning element 33 includes a positioning block 331 and a positioning spring 332. The positioning block 331 is slidably mounted on the connecting seat 31, and its sliding direction is perpendicular to the insertion direction of the baffle unit 32. The positioning spring 332 is fixed at both ends to the positioning block 331 and the connecting seat 31, respectively, and is used to push the positioning block 331 towards the baffle unit 32. The positioning block 331 is adapted to be inserted into the positioning groove 321.

[0033] Insert the baffle unit 32 into the connector 31 along the insertion direction. When the positioning groove 321 on the baffle unit 32 moves to the position aligned with the positioning block 331, the compression of the positioning spring 332 is released. The elastic force pushes the positioning block 331 toward the baffle unit 32, causing the positioning block 331 to insert into the positioning groove 321, thus locking the baffle unit 32 and the connector 31. When it is necessary to disassemble the baffle unit 32, simply push the positioning block 331 away from the baffle unit 32. The positioning block 331 overcomes the elastic force of the positioning spring 332 and compresses until the positioning block 331 is completely disengaged from the positioning groove 321. At this point, the baffle unit 32 can be pulled out of the connector 31 along the insertion direction.

[0034] In some possible embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The counterweight 4 includes a connecting screw 41 and multiple counterweight nuts 42. The connecting screw 41 is fixedly mounted on the connecting seat 31, and its axial direction is the same as the sliding direction of the corresponding positioning block 331. The multiple counterweight nuts 42 are all threadedly connected to the connecting screw 41.

[0035] A counterweight nut 42 near the connecting seat 31 is defined as a limiting counterweight nut 42. The limiting counterweight nut 42 abuts against the positioning block 331 to prevent the positioning block 331 from disengaging from the positioning groove 321.

[0036] The overall weight of the counterweight 4 can be adjusted by increasing or decreasing the number of counterweight nuts 42. When the weight of the material being processed is large, the impact and pressure of the material on the protective baffle 3 are greater, so the number of counterweight nuts 42 needs to be increased to increase the counterweight weight. This ensures that after the material enters the crushing chamber, the protective baffle 3 can reliably return to the first position under the action of the counterweight. When the weight of the material being processed is small, the number of counterweight nuts 42 can be reduced to avoid the counterweight being too large, which would make it difficult for the material to push the protective baffle 3 to open the feeding channel 11.

[0037] During the installation of the counterweight nut 42, the first counterweight nut 42 near the connecting seat 31 is defined as the limiting counterweight nut 42. By tightening the limiting counterweight nut 42, it moves towards the positioning block 331 until the limiting counterweight nut 42 directly abuts against the positioning block 331.

[0038] During the operation of the jaw crusher 2, if the positioning block 331 tends to slide away from the baffle unit 32 due to fatigue of the positioning spring 332, excessive vibration, or other unexpected situations, the limiting counterweight nut 42 will form a rigid block on the positioning block 331, restricting the sliding of the positioning block 331 and ensuring that the positioning block 331 always remains in the state of being inserted into the positioning groove 321, thus preventing the positioning block 331 from dislodging from the positioning groove 321 and causing the baffle unit 32 to loosen.

[0039] In some possible embodiments, please refer to Figure 3 The positioning block 331 has an extension 333 fixed at one end away from the baffle unit 32. The extension 333 extends outward through the connecting seat 31. The limiting counterweight nut 42 abuts against the extension 333.

[0040] The extension 333 is fixed to one end of the positioning block 331 away from the baffle unit 32, and the length of the extension 333 is such that after the positioning block 331 is inserted into the positioning groove 321, the outer end of the extension 333 is exposed in the external space of the connecting seat 31.

[0041] When adjusting the limit counterweight nut 42, the position of the extension 333 can be determined by external observation. Simply turn the limit counterweight nut 42 to move it toward the outer end of the extension 333 until the limit counterweight nut 42 and the outer end of the extension 333 are tightly abutted together, and the limit setting of the positioning block 331 can be completed.

[0042] Meanwhile, the extension 333 serves as an external operating point, allowing the baffle unit 32 to be disassembled without the need for special tools or disassembling the connecting seat 31. Operators can directly control the positioning block 331 through the extension 333, further improving the ease of operation.

[0043] In some possible embodiments, please refer to Figure 3 The baffle unit 32 is fixedly provided with a plug-in part 322 at one end away from the feeding channel 11. The positioning groove 321 is opened on the plug-in part 322, and the connector 31 is provided with a slot 311 suitable for plugging into the plug-in part 322.

[0044] When connecting the baffle unit 32 and the connector 31, the operator aligns the insertion part 322 of the baffle unit 32 with the slot 311 of the connector 31, and pushes the baffle unit 32 along the extension direction of the slot 311 so that the insertion part 322 is fully inserted into the slot 311, thus completing the assembly between the baffle unit 32 and the connector 31.

[0045] In some possible embodiments, please refer to Figure 3 The end of the positioning block 331 facing the baffle unit 32 is a spherical end, and the positioning groove 321 is a spherical groove suitable for insertion of the spherical end. The guiding effect of the spherical end makes the insertion and removal process of the baffle unit 32 smoother, reduces the risk of jamming, and further reduces the difficulty of maintenance.

[0046] In some possible embodiments, please refer to Figure 1 , Figure 2 and Figure 4 Multiple protective baffles 3 are divided into two groups, and the two groups of protective baffles 3 are respectively set on opposite sides of the protective cover 1.

[0047] Two sets of symmetrically arranged protective baffles 3 ensure that both the left and right sides of the material discharge channel 11 are covered by protective baffles 3, avoiding side gaps that may occur with single-sided installation. At the same time, the way the two sets of protective baffles 3 are joined together makes the sealing surface more complete, reducing the risk of fragments splashing out from the edge gaps. In addition, the symmetrical arrangement of the protective baffles 3 allows the material to fall from the central area, preventing the material from entering the crushing chamber of the jaw crusher 2 by bias to one side due to single-sided installation, indirectly improving the working stability and crushing quality of the jaw crusher 2.

[0048] In some possible embodiments, please refer to Figure 3 A limiting seat 51 is fixedly installed on the outer wall of the protective cover 1, and a buffer pad 52 is provided on the limiting seat 51. When the protective baffle 3 is in the first position, the protective baffle 3 abuts against the upper surface of the buffer pad 52 to restrict the rotation of the protective baffle 3.

[0049] It should be noted that the buffer pad 52 can be made of elastic and wear-resistant materials such as rubber, and can be installed on the limit seat 51 by means of bonding, snap-fitting or bolting.

[0050] In the non-feeding state, the protective baffle 3 rotates to the first position under the weight of the counterweight 4. When the protective baffle 3 rotates to the first position, the lower edge of the protective baffle 3 will contact and abut against the upper surface of the buffer pad 52. The limiting seat 51 supports the protective baffle 3 through the buffer pad 52, restricting its continued rotation and ensuring that all protective baffles 3 can stay on the same closed plane.

[0051] When the protective baffle 3 resets after the material has fallen, the elasticity of the buffer pad 52 reduces the impact force when the protective baffle 3 contacts the limit seat 51, allowing the protective baffle 3 to stop smoothly in the first position, preventing damage such as cracks or deformation of the protective baffle 3 or the hinge structure due to impact. At the same time, the elasticity of the buffer pad 52 can effectively absorb vibration and impact, preventing rigid impact when the protective baffle 3 resets, preventing damage to components due to impact, and extending the service life of the protective baffle 3.

[0052] In summary, the feeding safety protection structure provided by this utility model, compared with the prior art, has a protective cover 1 installed above the feed inlet of the jaw crusher 2, and a feeding channel 11 connected to the crushing chamber, providing a passage for material entry and forming the first protective barrier. Multiple protective baffles 3 are hinged to the protective cover 1 and distributed sequentially along the rotation axis. Each protective baffle 3 can automatically maintain its first position under the action of the counterweight 4, that is, it can merge with each other and close the feeding channel 11, thereby blocking the direct connection between the crushing chamber and the external environment when not feeding, and preventing fragments from flying out.

[0053] When material is fed into the feed inlet, its gravity impacts the protective baffle 3, forcing it to rotate around the hinge point and temporarily opening the discharge channel 11, allowing the material to smoothly enter the crushing chamber of the jaw crusher 2. Once the material has passed through, the counterweight 4 immediately drives the protective baffle 3 to rotate in the opposite direction by its own weight, causing it to quickly return to the first position and re-close the discharge channel 11. This ensures feeding while minimizing the risk of fragments splashing due to the squeezing vibration between the moving and stationary jaws or the irregular shape of the material during the crushing process.

[0054] Please see Figure 4 This utility model also provides a jaw crusher, including the above-mentioned feeding safety protection structure. By adopting the above-mentioned feeding safety protection structure, the risk of fragments splashing due to the squeezing vibration of the moving jaw and the stationary jaw or the irregular shape of the material during the crushing process is minimized while ensuring feeding.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A feeding safety protection structure, characterized in that, include: The protective cover (1) is installed above the feed inlet of the jaw crusher (2) and has a discharge channel (11) connected to the crushing chamber of the jaw crusher (2); Multiple protective baffles (3) are hinged to the protective cover (1) and are distributed sequentially along the rotation axis of the protective baffles (3); each of the protective baffles (3) has a first position for mutually splicing and closing the unloading channel (11); and Multiple counterweights (4) are respectively installed at one end of the protective baffle (3) away from the feeding channel (11); the counterweights (4) are used to drive the protective baffle (3) to rotate upward to the first position by their own weight after the material pushes the protective baffle to rotate downward and enter the feeding channel (11).

2. The feeding safety protection structure as described in claim 1, characterized in that, The protective baffle (3) includes: Connecting seat (31) is hinged to the protective cover (1); A baffle unit (32) is inserted into the connecting seat (31); a positioning groove (321) is provided on the baffle unit (32); The positioning element (33) is disposed on the connecting seat (31) and has an elastic degree of freedom to move toward the baffle unit (32); When the baffle unit (32) is inserted into the connecting seat (31), the positioning member (33) is inserted into the positioning groove (321) so that the baffle unit (32) is locked on the connecting seat (31).

3. The feeding safety protection structure as described in claim 2, characterized in that, The positioning element (33) includes: The positioning block (331) is slidably disposed on the connecting seat (31), and the sliding direction is perpendicular to the insertion direction of the baffle unit (32); The positioning spring (332) is fixed at both ends to the positioning block (331) and the connecting seat (31) respectively, and is used to push the positioning block (331) towards the baffle unit (32); The positioning block (331) is adapted to be inserted into the positioning groove (321).

4. The feeding safety protection structure as described in claim 3, characterized in that, The counterweight (4) includes: The connecting screw (41) is fixedly mounted on the connecting seat (31), and its axial direction is the same as the sliding direction of the corresponding positioning block (331); Multiple counterweight nuts (42) are threaded onto the connecting screw (41); Among them, one of the counterweight nuts (42) near the connecting seat (31) is defined as the limiting counterweight nut (42); the limiting counterweight nut (42) abuts against the positioning block (331) to restrict the positioning block (331) from disengaging from the positioning groove (321).

5. The feeding safety protection structure as described in claim 4, characterized in that, The positioning block (331) has an extension (333) fixed at one end away from the baffle unit (32), the extension (333) extends outward through the connecting seat (31); the limiting counterweight nut (42) abuts against the extension (333).

6. The feeding safety protection structure as described in claim 2, characterized in that, The baffle unit (32) is fixedly provided with a plug-in part (322) at one end away from the feeding channel (11), the positioning groove (321) is opened on the plug-in part (322), and the connecting seat (31) is provided with a slot (311) suitable for the plug-in part (322) to be inserted.

7. The feeding safety protection structure as described in claim 3, characterized in that, The end of the positioning block (331) facing the baffle unit (32) is a spherical end, and the positioning groove (321) is a spherical groove suitable for insertion of the spherical end.

8. The feeding safety protection structure as described in claim 1, characterized in that, The multiple protective baffles (3) are divided into two groups, and the two groups of protective baffles (3) are respectively arranged on opposite sides of the protective cover (1).

9. The feeding safety protection structure as described in claim 1, characterized in that, A limiting seat (51) is fixedly provided on the outer wall of the protective cover (1), and a buffer pad (52) is provided on the limiting seat (51); When the protective baffle (3) is in the first position, the protective baffle (3) abuts against the upper surface of the buffer pad (52) to restrict the rotation of the protective baffle (3).

10. A jaw crusher, characterized in that, Includes the feed safety protection structure as described in any one of claims 1 to 9.

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