Bolt assembly and sand mill

Abstract

The utility model belongs to sand making machine technical field, concretely relates to bolt assembly and sand making machine, and bolt assembly is used for locking wear -resisting spare of sand making machine, and sand making machine includes wear -resisting spare mounting plate that has installed hole, and wear -resisting spare has installed groove, and the bottom of installed groove has through -hole, and bolt assembly includes: bolt, including threaded portion and the bolt head at threaded portion one end, threaded portion in proper order through -hole and installed hole, and the bolt head is located installed groove and partially protrudes outward, nut, with threaded portion threaded connection and be used for wear -resisting spare mounting plate and wear -resisting spare locking. Adopt the bolt assembly above, can effectively prolong the service life of bolt, reduce the risk of wear -resisting spare falling off due to bolt head abrasion.

Description

Technical Field

[0001] This utility model belongs to the field of sand making machine technology, specifically relating to bolt assemblies and sand making machines. Background Technology

[0002] In existing technology, the motor of a sand making machine drives a power transmission mechanism via a belt, causing the rotor to rotate at high speed. The rotor has multiple ejection ports. After the sand and gravel aggregate enters the rotor from the feed chamber, it is accelerated and ejected, colliding and crushing with the anvil or other sand and gravel in the crushing chamber. Simultaneously, the sand and gravel rebound under force, splashing throughout the crushing chamber. The high-speed rotating rotor collides and rubs against this splashed sand and gravel. This sand and gravel also rubs against the wear-resistant parts installed on the outer periphery of the rotor, as well as the bolts that mount these parts. Over time, both the wear-resistant parts and the mounting bolts will inevitably wear down, especially under hard rock conditions where the wear rate is even faster. The material of the wear-resistant parts is usually superior to that of the standard bolts.

[0003] Although bolts are usually installed in the mounting holes of wear-resistant parts, the amount of sand and gravel processed by the sand making machine per unit time is very large, so the bolts will still wear out relatively quickly in actual use. If not careful, when the bolt head is completely worn, the wear-resistant parts will fly out and fall off, damaging the sand making machine, causing the sand making machine to stop working and affecting production operations. Utility Model Content The purpose of this invention is to provide a bolt assembly and a sand making machine to solve the technical problem that bolts in wear-resistant parts are easily worn out in the prior art.

[0004] To achieve the above objectives, this utility model provides a bolt assembly for locking wear-resistant parts of a sand making machine. The sand making machine includes a wear-resistant part mounting plate with mounting holes, the wear-resistant part having mounting grooves, and a through hole at the bottom of the mounting grooves. The bolt assembly includes: A bolt, comprising a threaded portion and a bolt head located at one end of the threaded portion, wherein the threaded portion passes through a through hole and a mounting hole in sequence, and the bolt head is located in a mounting groove and partially protrudes outward; Nuts are threaded into the threaded portion and used to lock the wear-resistant mounting plate and the wear-resistant parts in place.

[0005] In some implementations, the bolt head is longer than 40 mm and extends more than 5 mm beyond the outer wall of the wear-resistant part.

[0006] In some implementations, the bolt head is made of structural steel or quenched and tempered steel.

[0007] In some embodiments, the bolt head is a solid cylinder, the outer circumference of the bolt head is clearance-fitted with the inner circumferential wall of the mounting groove, and the end of the bolt head away from the threaded part is a smooth surface or a circular arc surface.

[0008] In some implementations, a snap-fit ​​portion is provided at the end of the threaded portion away from the bolt head.

[0009] In some embodiments, the outer periphery of the snap-fit ​​portion has two snap-fit ​​planes that are opposite to each other.

[0010] In some implementations, the snap-fit ​​portion is a polygonal prism.

[0011] In some embodiments, the snap-fit ​​portion has a multi-faceted groove at the end opposite to the threaded portion.

[0012] In some implementations, the bolt head is a solid multi-faceted prism, and the shape of the mounting groove is adapted to the bolt head.

[0013] The second aspect of this utility model provides a sand making machine, comprising: a rotor having a plurality of wear-resistant component mounting plates; a plurality of wear-resistant components, each corresponding to one of the plurality of wear-resistant component mounting plates; and a plurality of bolt assemblies according to the above, each bolt assembly being used to lock the wear-resistant components and the wear-resistant component mounting plates.

[0014] In the above technical solution, the bolt assembly is used to lock the wear-resistant parts of the sand making machine. The sand making machine includes a wear-resistant part mounting plate with mounting holes, and the wear-resistant part has a mounting groove with a pipe punch at the bottom of the mounting groove. The bolt assembly includes a bolt and a nut. The threaded portion of the bolt passes through the through hole and the mounting hole in sequence, and the bolt head is located in the mounting groove and partially protrudes outward. The nut is threadedly connected to the threaded portion, locking the wear-resistant part mounting plate and the wear-resistant part, further enhancing the structural stability. The bolt assembly provided by this utility model includes a bolt, and the bolt head is significantly longer than that of the bolt head in the prior art. This design effectively extends the service life of the bolt and reduces the risk of wear-resistant parts falling off due to wear of the bolt head.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram illustrating an application scenario of the bolt assembly provided according to an embodiment of the present utility model; Figure 2 This is a structural schematic diagram of a sand making machine provided according to an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached figures 100 rotors 200 wear-resistant parts 300 bolt assembly 400 Wear-resistant Parts Mounting Plate 10 bolts 11 Bolt head 12 Threaded section 13-card connector 20 nuts Detailed Implementation The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0018] The bolt assembly 300 and the sand making machine according to the present invention are described below with reference to the accompanying drawings. Figure 1 The diagram shown is a schematic representation of an application scenario for the bolt assembly 300 provided according to an embodiment of the present invention; as shown... Figure 2 The diagram shown is a structural schematic of a sand making machine according to an embodiment of the present invention. The bolt assembly 300 provided in this embodiment is used to lock the wear-resistant part 200 of the sand making machine. The sand making machine includes a wear-resistant part mounting plate 400 with mounting holes. The wear-resistant part 200 has a mounting groove (not shown in the figure), and a through hole (not shown in the figure) is formed at the bottom of the mounting groove. The bolt assembly 300 includes: Bolt 10 includes a threaded portion 12 and a bolt head 11 located at one end of the threaded portion 12. The threaded portion 12 passes through a through hole and a mounting hole in sequence, and the bolt head 11 is located in a mounting groove and partially protrudes outward. Nut 20 is threaded to threaded part 12 and used to lock wear-resistant mounting plate 400 and wear-resistant part 200.

[0019] In the existing technology, the bolts used to lock the wear-resistant plates of the sand making machine are standard bolts. The bolt head of the standard bolt is embedded in the wear-resistant part 200, and the other end away from the bolt head passes through the wear-resistant part 200 and the wear-resistant part mounting plate 400 in sequence. The wear-resistant part 200 and the wear-resistant part mounting plate 400 are locked together by a nut 20. However, the standard bolt has a problem that the bolt head is too short. During the use of the sand making machine, it is easily damaged by sand and gravel. When the upper groove is damaged, it often makes it difficult to disassemble the standard bolt.

[0020] This utility model provides a bolt assembly 300, which includes a bolt 10 and a nut 20. Compared to a standard bolt 10, the bolt 10 of this application includes a threaded portion 12 and a bolt head 11 located at one end of the threaded portion 12. The bolt head 11 is located in a mounting groove and partially protrudes outward, allowing the bolt head 11 to better withstand the wear of sand and gravel in the harsh working environment of the sand making machine, thus extending the service life of the bolt 10. Simultaneously, the partially protruding bolt head 11 facilitates replacement or repair after the bolt 10 wears out, reducing maintenance costs. Furthermore, the bolt assembly 300 also includes a nut 20 threadedly connected to the threaded portion 12. The tight fit between the nut 20 and the threaded portion 12 further enhances the structural stability and ensures the stability of the wear-resistant part 200 during the operation of the sand making machine.

[0021] In one embodiment, the bolt head 11 is longer than 40 mm and extends more than 5 mm beyond the outer wall of the wear-resistant component 200. To better protect the components of the rotor 100, the wear-resistant component 200 is typically thicker, for example, 30 mm. Correspondingly, to ensure the bolt head 11 is compatible with the thickness of the wear-resistant component 200, the bolt head 11 provided in this embodiment is longer than 40 mm and extends more than 5 mm beyond the outer wall of the wear-resistant component 200. This design gives the bolt head 11 a longer wear life, maintaining good structural strength even under prolonged abrasion from sand and gravel, and reducing the risk of the wear-resistant component 200 falling off. Compared to the standard bolt head of approximately 5 mm, the bolt assembly 300 provided in this embodiment significantly improves the wear resistance of the bolt 10.

[0022] In one embodiment, the bolt head 11 is made of structural steel or quenched and tempered steel. Structural steel or quenched and tempered steel has high hardness and wear resistance, effectively resisting wear from materials such as sand and gravel, further extending the service life of the bolt 10. Simultaneously, these materials also possess good mechanical properties, ensuring that the bolt 10 maintains stable performance in the harsh working environment of the sand making machine. In a specific embodiment, the bolt head 11 has also undergone quenching heat treatment to increase its hardness.

[0023] In one embodiment, such as Figure 1As shown, the bolt head 11 is a solid cylinder. The outer circumference of the bolt head 11 is clearance-fitted with the inner circumferential wall of the mounting groove. The end of the bolt head 11 away from the threaded portion 12 is a smooth surface or an arc surface. Standard bolts typically have an internal hexagonal groove or a cross groove at the end of the bolt head 11 to facilitate fixing when disassembling the bolt 10. However, the presence of the internal hexagonal groove or cross groove makes standard bolts more prone to wear and damage, affecting their lifespan. The bolt 10 of this invention adopts a solid cylindrical structure, and the end of the bolt head 11 away from the threaded portion 12 is a smooth surface or an arc surface. This allows the bolt head 11 to withstand wear more evenly when subjected to abrasion from materials such as sand and gravel, avoiding stress concentration caused by the internal hexagonal groove or cross groove, thereby further extending the service life of the bolt 10. Furthermore, the clearance fit between the outer circumference of the bolt head 11 and the inner circumferential wall of the mounting groove ensures the stability of the bolt 10 within the mounting groove and facilitates replacement or repair of the bolt 10 when needed, improving maintenance convenience.

[0024] In one embodiment, such as Figure 1 As shown, a snap-fit ​​portion 13 is provided at the end of the threaded portion 12 opposite to the bolt head 11. When installing or removing the nut 20, the snap-fit ​​portion 13 is locked in place. To keep the bolt 10 stationary during nut 20 installation, this embodiment of the invention provides a snap-fit ​​portion 13 at the end of the threaded portion 12 opposite to the bolt head 11. This design cleverly utilizes a snap-fit ​​component, ensuring that the snap-fit ​​portion 13 is securely locked in place during nut 20 installation or removal. This allows workers to more easily fix the bolt 10 when installing or removing the nut 20, preventing the bolt 10 from rotating due to external forces, greatly improving operational convenience and efficiency. This innovative design of the snap-fit ​​portion 13 not only simplifies the assembly process of the bolt assembly 300 but also effectively reduces the risk of damage to the bolt assembly 300 due to improper operation.

[0025] In one embodiment, the outer periphery of the locking portion 13 has two opposing locking surfaces. Having two opposing locking surfaces allows the locking pliers or wrench to engage more effectively, providing a more stable hold. As common tools, locking pliers or wrenches are readily available and easy to use, reducing operating costs.

[0026] In one embodiment, the snap-fit ​​portion 13 is a polygonal prism, and the snap-fit ​​element is a snap-fit ​​clamp adapted to the polygonal prism, which can be fitted onto the outer periphery of the polygonal prism to fix it in place. For example, the snap-fit ​​portion is a triangular prism, a square prism, a pentagonal prism, etc.

[0027] In one specific embodiment, the locking part 13 is a hexagonal prism. The hexagonal prism locking part 13, when used with an external hex wrench, provides a more secure locking effect, preventing the bolt 10 from rotating during the installation and removal of the nut 20, and further improving the convenience and efficiency of operation.

[0028] In one embodiment, the snap-fit ​​portion 13 has a multi-faceted groove at the end opposite to the threaded portion 12. Taking a hexagonal groove as an example, when disassembling or assembling the nut 20, the operator can use an Allen wrench to firmly lock the snap-fit ​​portion 13 into the hexagonal groove, thereby fixing the bolt 10 and preventing the bolt 10 from rotating.

[0029] In one embodiment, the bolt head 11 is a solid polygonal prism, and the shape of the mounting groove is adapted to the bolt head 11. When the bolt 10 is installed, the bolt head 11 engages with the inner wall of the mounting groove, preventing the bolt 10 from rotating. This allows the nut 20 to smoothly connect with the threaded portion 12, preventing the bolt 10 from rotating during tightening of the nut 20, thus ensuring the accuracy and stability of the bolt assembly 300 installation. Furthermore, the design of the solid polygonal prism structure of the bolt head 11 and its adaptation to the mounting groove also provides better positioning of the bolt 10 within the mounting groove, reducing the risk of the wear-resistant part 200 falling off due to loosening of the bolt 10.

[0030] In one embodiment, such as Figure 2 As shown, a sand making machine is provided, including: a rotor 100, a plurality of wear-resistant parts 200 and the aforementioned bolt assembly 300. The rotor 100 has a plurality of wear-resistant part mounting plates 400. The plurality of wear-resistant parts 200 are mounted one-to-one on the plurality of wear-resistant part mounting plates 400. Each bolt assembly 300 is used to lock the wear-resistant part 200 and the wear-resistant part mounting plate 400.

[0031] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A bolt assembly, characterized in that, Wear-resistant parts (200) for locking a sand making machine, the sand making machine including a wear-resistant part mounting plate (400) with mounting holes, the wear-resistant part (200) having mounting grooves, the bottom of the mounting grooves having through holes, the bolt assembly (300) including: The bolt (10) includes a threaded portion (12) and a bolt head (11) located at one end of the threaded portion (12). The threaded portion (12) passes through the through hole and the mounting hole in sequence, and the bolt head (11) is located in the mounting groove and partially protrudes outward. Nut (20) is threaded to the threaded portion (12) and is used to lock the wear-resistant mounting plate (400) and the wear-resistant part (200).

2. The bolt assembly according to claim 1, characterized in that, The bolt head (11) is longer than 40 mm and extends more than 5 mm beyond the outer wall of the wear-resistant part (200).

3. The bolt assembly according to claim 1, characterized in that, The bolt head (11) is made of structural steel or quenched and tempered steel.

4. The bolt assembly according to claim 1, characterized in that, The bolt head (11) is a solid cylinder. The outer circumference of the bolt head (11) is in clearance fit with the inner circumferential wall of the mounting groove. The end of the bolt head (11) away from the threaded part (12) is a smooth surface or a circular arc surface.

5. The bolt assembly according to claim 4, characterized in that, The threaded portion (12) is provided with a snap-fit ​​portion (13) at the end opposite to the bolt head (11).

6. The bolt assembly according to claim 5, characterized in that, The outer periphery of the snap-fit ​​portion (13) has two snap-fit ​​planes that are opposite to each other.

7. The bolt assembly according to claim 5, characterized in that, The snap-fit ​​part (13) is a polygonal prism.

8. The bolt assembly according to claim 5, characterized in that, The snap-fit ​​portion (13) has a multi-faceted groove at one end opposite to the threaded portion (12).

9. The bolt assembly according to claim 1, characterized in that, The bolt head (11) is a solid polygonal prism, and the shape of the mounting groove is adapted to the bolt head (11).

10. A sand making machine, characterized in that, include: Rotor (100), the rotor (100) having a plurality of wear-resistant mounting plates (400); Multiple wear-resistant parts (200) are installed one-to-one on multiple wear-resistant part mounting plates (400); Multiple bolt assemblies (300) according to any one of claims 1 to 9, each bolt assembly (300) being used to lock the wear-resistant part (200) and the wear-resistant part mounting plate (400).

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