Jaw crusher
Set a shaft shoulder on the rack shaft of the jaw crusher, and connect the tight set with the shaft shoulder to limit the movement of the bearing of the rack, solve the problem of tightly fixed breaks, and improve the operating efficiency of the equipment.
Patent Information
- Application Number
- CN202421011186.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-10
AI Technical Summary
During the operation of existing jaw crushers, the tightening sleeve is prone to breaking, which affects the operating efficiency.
By setting a shaft shoulder on the rack shaft and connecting the tight set with the shaft shoulder. The frame bearing set is set on the tight set, and the shoulder shoulder and tightly are used to limit the bearing of the rack bearing in Move in your own axial direction to avoid setting up locking nuts and reserved knife grooves on a tight set.
Reduced the crushing of the jaw crusher during the operation and improved operational efficiency.
Smart Images
Figure CN222401764U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of crushing machinery, in particular to a jaw crusher. Background Art
[0002] Jaw crusher is commonly known as jaw crusher, also known as tiger jaw. The crushing chamber is composed of two jaw plates, the moving jaw and the static jaw, which simulate the movement of the two jaws of animals to complete the material crushing operation. It is widely used in the crushing of various ores and bulk materials in the mining and smelting, building materials, highways, railways, water conservancy and chemical industries.
[0003] The inventor has found through research that some existing jaw crushers are prone to have the adapter sleeve broken during operation, thereby affecting the operating efficiency. Utility Model Content
[0004] The utility model aims to provide a jaw crusher, which can reduce the crushing of the adapter sleeve during the operation of the jaw crusher, thereby ensuring the operating efficiency.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In a first aspect, the utility model provides a jaw crusher, comprising:
[0007] The frame shaft comprises a first shaft section and a second shaft section which are connected in sequence, the radial dimension of the first shaft section is smaller than the radial dimension of the second shaft section, and a shaft shoulder is provided at the connection between the first shaft section and the second shaft section;
[0008] An adapter sleeve, which is arranged on the first shaft section and abuts against the shaft shoulder;
[0009] The frame bearing is sleeved in the adapter sleeve and abuts against the shaft shoulder. The bearing sleeve is fixedly connected to the adapter sleeve. The shaft shoulder and the adapter sleeve are used to limit the movement of the frame bearing in the direction of its own axis.
[0010] In an optional embodiment, the inner ring of the frame bearing has a mounting hole, the mounting hole has a large end and a small end, the mounting hole runs through the large end to the small end, and the large end is farther away from the shaft shoulder than the small end.
[0011] In an optional embodiment, the diameter of the mounting hole gradually decreases from the large-mouth end to the small-mouth end.
[0012] In an optional embodiment, the outer peripheral wall of the adapter sleeve is provided with an inclined surface matching the inner wall of the mounting hole, and the adapter sleeve and the mounting hole are interference fit.
[0013] In an optional embodiment, the adapter sleeve includes a first sleeve section and a second sleeve section connected in sequence along its own axial direction, the first sleeve section is away from the shaft shoulder relative to the second sleeve section, the radial dimension of the second sleeve section gradually increases in the direction approaching the first sleeve section, and the second sleeve section is fixedly connected to the frame bearing.
[0014] In an optional embodiment, the radial dimension of the first segment in its own axial direction remains unchanged, and the jaw crusher further comprises a stop pad, which is sleeved on the first segment and is used to limit the movement of the frame bearing in its own axial direction.
[0015] In an optional embodiment, the jaw crusher further comprises a stopper, which is sleeved on the first shaft section and located at an end of the adapter sleeve away from the shaft shoulder, and is used for limiting the movement of the adapter sleeve in its own axial direction.
[0016] In an optional embodiment, the retaining member is a retaining nut, and the retaining nut is threadedly connected to the first shaft segment.
[0017] In an optional embodiment, the adapter sleeve is manufactured by an oil conditioning process.
[0018] In an optional embodiment, the adapter sleeve is made of 42CrMo steel.
[0019] The beneficial effect of the embodiment of the utility model is as follows: the jaw crusher provided by the embodiment of the utility model includes a frame shaft, an adapter sleeve and a frame bearing. The frame shaft includes a first shaft section and a second shaft section connected in sequence, the radial dimension of the first shaft section is smaller than the radial dimension of the second shaft section, and a shaft shoulder is provided at the connection between the first shaft section and the second shaft section, the adapter sleeve is sleeved on the first shaft section and abuts against the shaft shoulder, the frame bearing is sleeved on the adapter sleeve and abuts against the shaft shoulder, the bearing sleeve is fixedly connected to the adapter sleeve, and the shaft shoulder and the adapter sleeve are used to limit the movement of the frame bearing in its own axial direction. The shaft shoulder and the adapter sleeve between the first shaft section and the second shaft section can limit the movement of the frame bearing in its own axial direction, rather than setting a locking nut on the adapter sleeve to limit the movement of the frame bearing in the axial direction, and the adapter sleeve does not need to reserve a knife back groove, thereby reducing the situation of the adapter sleeve being broken during the operation of the jaw crusher and ensuring the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 It is a schematic diagram of the assembly of the frame shaft, adapter sleeve and frame bearing of the existing structure;
[0022] Figure 2 for Figure 1 A magnified image of
[0023] Figure 3 The present invention is a schematic diagram of the assembly of a frame shaft, an adapter sleeve and a frame bearing provided in an embodiment of the present invention.
[0024] Icons: 100-frame shaft; 110-first shaft section; 120-second shaft section; 130-shaft shoulder; 200-adapter sleeve; 210-first sleeve section; 220-second sleeve section; 300-frame bearing; 310-large end; 320-small end; 400-retraction pad; 500-retraction nut; 2000-knife groove. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0028] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] The specific structure of a jaw crusher provided by an embodiment of the utility model and the corresponding technical effects brought about by it are described in detail below in conjunction with the patent drawings.
[0032] Please refer to Figure 1-Figure 2 In some existing jaw crushers, the adapter sleeve 200 is sleeved on the first shaft section 110 of the frame shaft 100. In order to limit the axial movement of the frame bearing 300 on the adapter sleeve 200, an external thread connected to the locking nut thread is provided at the end of the adapter sleeve 200 away from the second shaft section 120, and a back-off groove 2000 is left during the processing of the adapter sleeve 200. Therefore, the impact force received during the operation of the jaw crusher easily causes stress concentration at the back-off groove 2000 of the adapter sleeve 200, causing the adapter sleeve 200 to rupture.
[0033] Please refer to Figure 3 A jaw crusher provided by an embodiment of the utility model includes a frame shaft 100, a tightening sleeve 200 and a frame bearing 300.
[0034] The frame shaft 100 includes a first shaft section 110 and a second shaft section 120 which are connected in sequence. The radial dimension of the first shaft section 110 is smaller than the radial dimension of the second shaft section 120. A shoulder 130 is provided at the connection between the first shaft section 110 and the second shaft section 120. The adapter sleeve 200 is sleeved on the first shaft section 110 and abuts against the shoulder 130. The frame bearing 300 is sleeved on the adapter sleeve 200 and abuts against the shoulder 130. The bearing sleeve is fixedly connected to the adapter sleeve 200. The shoulder 130 and the adapter sleeve 200 are used to limit the movement of the frame bearing 300 in its own axial direction.
[0035] It can be understood that, since the shoulder 130 and the adapter sleeve 200 between the first shaft section 110 and the second shaft section 120 in the embodiment can limit the movement of the frame bearing 300 in its own axial direction, instead of providing a locking nut on the adapter sleeve 200 to limit the movement of the frame bearing 300 in the axial direction, the adapter sleeve 200 does not need to reserve a retreat groove 2000, thereby reducing the breakage of the adapter sleeve 200 during the operation of the jaw crusher and ensuring the operating efficiency.
[0036] In detail, in this embodiment, the inner ring of the frame bearing 300 has a mounting hole, and the mounting hole has a large end 310 and a small end 320. The mounting hole runs through the large end 310 to the small end 320, and the large end 310 is farther away from the shaft shoulder 130 than the small end 320.
[0037] It can be understood that in this embodiment, the inner diameter size of the inner ring mounting hole of the frame bearing 300 in the axial direction is not the same size, and the large end 310 is farther away from the shaft shoulder 130 relative to the small end 320. Therefore, in the direction away from the shaft shoulder 130, the size of the mounting hole becomes smaller, thereby limiting the movement of the frame bearing 300 in the direction away from the shaft shoulder 130, and the shaft shoulder 130 limits the movement of the frame bearing 300 in the direction close to the second shaft segment 120, so as to ensure that the frame bearing 300 is stably arranged on the adapter sleeve 200.
[0038] The diameter of the mounting hole gradually decreases from the large end 310 to the small end 320. Of course, in some other embodiments, the diameter of the mounting hole may not gradually decrease from the large end 310 to the small end 320, but may suddenly change at a preset position in the axial direction of the mounting hole.
[0039] The outer peripheral wall of the adapter sleeve 200 is provided with an inclined surface matching the inner wall of the mounting hole, and the adapter sleeve 200 is interference fit with the mounting hole, that is, the outer wall of the adapter sleeve 200 matching with the mounting hole gradually increases in the direction away from the shaft shoulder 130, and is interference fit with the mounting hole, so that the frame bearing 300 can be stably assembled on the adapter sleeve 200.
[0040] In detail, the adapter sleeve 200 includes a first sleeve section 210 and a second sleeve section 220 which are sequentially connected along its own axial direction. The first sleeve section 210 is relatively far away from the shaft shoulder 130, and the radial dimension of the second sleeve section 220 gradually increases in the direction approaching the first sleeve section 210, that is, the radial dimension of the second sleeve section 220 gradually increases in the direction away from the shaft shoulder 130, and the radial dimension of the first sleeve section 210 in its own axial direction remains unchanged. The second sleeve section 220 is fixedly connected to the frame bearing 300, that is, the second sleeve section 220 is interference fit with the frame bearing 300.
[0041] Of course, in some other embodiments, the adapter sleeve 200 and the frame bearing 300 can also be fixedly connected by a key, and are not limited to the above-mentioned interference fit. Or in some other embodiments, the adapter sleeve 200 and the frame bearing 300 can also be connected by a fastener, or the adapter sleeve 200 and the frame bearing 300 can also be connected by an adhesive.
[0042] Optionally, the jaw crusher further includes a stop pad 400, which is sleeved on the first sleeve section 210. The stop pad 400 is used to limit the axial movement of the frame bearing 300. It can be understood that the axial movement of the frame bearing 300 can be further limited by the setting of the stop pad 400.
[0043] Optionally, the jaw crusher further comprises a stopper, which is sleeved on the first shaft section 110 and located at an end of the adapter sleeve 200 away from the shaft shoulder 130 , and is used to limit the movement of the adapter sleeve 200 in its own axial direction.
[0044] The retaining member is a retaining nut 500 , and the retaining nut 500 is threadedly connected to the first shaft section 110 .
[0045] Of course, in some other embodiments, the retaining member is not limited to the retaining nut 500 threadedly connected to the first shaft segment 110, and the retaining member can also be other structures, for example, the retaining member is sleeved on the first shaft segment 110 and connected to the first shaft segment 110 through a key, or the retaining member is sleeved on the first shaft segment 110 and connected to the first shaft segment 110 through a fastener.
[0046] Optionally, in this embodiment, the adapter sleeve 200 is manufactured by an oil quenching and tempering process, which refers to a heat treatment method combining oil quenching and tempering in the production process of the adapter sleeve 200 to improve its mechanical properties and internal quality.
[0047] Oil conditioning can significantly improve the surface and core hardness of the adapter sleeve 200, thereby enhancing its ability to resist wear, which is particularly important for the adapter sleeve 200 used in high load, high speed or relative sliding situations. The oil conditioning process can make the adapter sleeve 200 obtain a good balance of toughness and plasticity, making it less likely to suffer brittle fracture when subjected to impact or alternating stress, and improving its fatigue resistance and stress corrosion resistance. Through precise control of oil quenching and tempering, the deformation during the heat treatment process can be effectively reduced to ensure the dimensional stability of the adapter sleeve 200, which is particularly important for the adapter sleeve 200 that requires precise matching. Oil conditioning can comprehensively improve the mechanical properties of the adapter sleeve 200, such as yield strength, tensile strength and elongation, and improve its service performance under complex working conditions.
[0048] Through the oil conditioning process, the adapter sleeve 200 can significantly improve its comprehensive properties such as hardness, wear resistance, toughness, plasticity and dimensional stability, so as to meet the high requirements for the adapter sleeve 200 under various complex working conditions, extend its service life, and improve the reliability and safety of equipment operation.
[0049] Optionally, the adapter sleeve 200 is made of 42CrMo steel. The tensile strength of 42CrMo steel in a heat-treated state (such as quenching and tempering) can usually reach 900MPa to 1100MPa, and it has a very high load-bearing capacity. The yield strength is generally above 800MPa, indicating that it has a high ability to resist deformation at the initial stage of force. The elongation is often around 10%, indicating that it can withstand a certain amount of plastic deformation before breaking and has good toughness. Under low temperature or dynamic loading conditions, it can still maintain a high impact resistance, which is crucial to preventing the brittle fracture of the adapter sleeve 200.
[0050] Of course, in some other embodiments, the adapter sleeve 200 may also be made of other materials.
[0051] In summary, a jaw crusher provided by an embodiment of the utility model includes a frame shaft 100, an adapter sleeve 200 and a frame bearing 300. The frame shaft 100 includes a first shaft section 110 and a second shaft section 120 connected in sequence, the radial dimension of the first shaft section 110 is smaller than the radial dimension of the second shaft section 120, and a shaft shoulder 130 is provided at the connection between the first shaft section 110 and the second shaft section 120, the adapter sleeve 200 is sleeved on the first shaft section 110 and abuts against the shaft shoulder 130, the frame bearing 300 is sleeved on the adapter sleeve 200 and abuts against the shaft shoulder 130, the bearing sleeve is fixedly connected to the adapter sleeve 200, and the shaft shoulder 130 and the adapter sleeve 200 are used to limit the movement of the frame bearing 300 in its own axial direction. The shoulder 130 and the adapter sleeve 200 between the first shaft section 110 and the second shaft section 120 can limit the movement of the frame bearing 300 in the axial direction thereof, instead of setting a locking nut on the adapter sleeve 200 to limit the movement of the frame bearing 300 in the axial direction. The adapter sleeve 200 does not need to reserve a cutter groove 2000, thereby reducing the possibility of the adapter sleeve 200 being broken during the operation of the jaw crusher and ensuring the operating efficiency.
[0052] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A jaw crusher, characterized in that: include: A frame shaft, the frame shaft comprising a first shaft section and a second shaft section connected in sequence, the radial dimension of the first shaft section is smaller than the radial dimension of the second shaft section, and a shaft shoulder is provided at a connection between the first shaft section and the second shaft section; An adapter sleeve, which is arranged on the first shaft section and abuts against the shaft shoulder; A frame bearing, wherein the frame bearing sleeve is arranged on the adapter sleeve and abuts against the shaft shoulder, the bearing sleeve is fixedly connected to the adapter sleeve, and the shaft shoulder and the adapter sleeve are used to limit the movement of the frame bearing in the direction of its own axis.
2. The jaw crusher according to claim 1, characterized in that: The inner ring of the frame bearing has a mounting hole, the mounting hole has a large end and a small end, the mounting hole penetrates from the large end to the small end, and the large end is far away from the shaft shoulder relative to the small end.
3. The jaw crusher according to claim 2, characterized in that: The aperture of the mounting hole gradually decreases from the large-mouth end to the small-mouth end.
4. The jaw crusher according to claim 3, characterized in that: The outer peripheral wall of the adapter sleeve is provided with an inclined surface matching the inner wall of the mounting hole, and the adapter sleeve is interference fit with the mounting hole.
5. The jaw crusher according to claim 1, characterized in that: The adapter sleeve includes a first sleeve section and a second sleeve section which are connected in sequence along its own axial direction. The first sleeve section is farther away from the shaft shoulder than the second sleeve section. The radial dimension of the second sleeve section gradually increases in the direction approaching the first sleeve section. The second sleeve section is fixedly connected to the frame bearing.
6. The jaw crusher according to claim 5, characterized in that: The radial dimension of the first sleeve segment in the direction of its own axis is unchanged. The jaw crusher also includes a stop pad, which is sleeved on the first sleeve segment and is used to limit the movement of the frame bearing in its own axial direction.
7. The jaw crusher according to claim 1, characterized in that: The jaw crusher also includes a stopper, which is sleeved on the first shaft section and located at an end of the adapter sleeve away from the shaft shoulder, and is used to limit the movement of the adapter sleeve in its own axial direction.
8. The jaw crusher according to claim 7, characterized in that: The retaining member is a retaining nut, and the retaining nut is threadedly connected to the first shaft segment.
9. The jaw crusher according to claim 1, characterized in that: The adapter sleeve is manufactured through an oil conditioning process.
10. The jaw crusher according to claim 1, characterized in that: The adapter sleeve is made of 42CrMo steel.