A jaw crusher discharge buffer device

Abstract

This utility model belongs to the field of jaw crusher technology, specifically relating to a feeding buffer device for a jaw crusher. It includes a feeding buffer mechanism mounted on the frame of the jaw crusher body. The feeding buffer mechanism includes a baffle located directly below the feeding port of the jaw crusher body. A second clamping seat and a first clamping seat are fixedly mounted on the baffle. The second clamping seat and the first clamping seat are respectively clamped onto a second connecting shaft and a first connecting shaft. The second connecting shaft is rotatably mounted on a first bearing seat. The first connecting shaft is connected to one end of a hydraulic buffer mechanism, and the other end of the hydraulic buffer mechanism is connected to a third connecting shaft, which is rotatably mounted on the second bearing seat. When material falls from the discharge port of the jaw crusher body, the baffle is impacted by the material and swings downwards. The hydraulic buffer mechanism is driven by the baffle to contract, effectively absorbing the impact potential energy of the material through hydraulic shock absorption, preventing material with high potential energy from directly hitting the conveyor belt and causing equipment damage.

Description

Technical Field

[0001] This utility model belongs to the field of jaw crusher technology, specifically relating to a feeding buffer device for a jaw crusher. Background Technology

[0002] Jaw crushers are widely used as an important primary crushing equipment in many industries such as mining and building materials production. Their working principle involves the relative movement of the moving and fixed jaws to compress and split the material entering the crushing chamber, thereby breaking large pieces of material into smaller particles. However, in actual production, the following problems exist in the material feeding process of jaw crushers: When material is crushed by a jaw crusher and discharged from the feed inlet, it possesses significant impact potential energy due to its falling height and its own gravity. When material falls freely from the feed inlet onto the conveyor belt below or into subsequent processing equipment, it causes a strong impact on the surface of the receiving equipment, easily leading to wear and tear on the conveyor belt, shortening its service life, and increasing equipment maintenance costs. For some more precise or impact-sensitive subsequent processing equipment, excessive impact may even damage internal components, affecting normal operation and production efficiency. To address the aforementioned problems, existing technologies employ the following material feeding buffer devices: some utilize a simple buffer plate structure, placing an inclined buffer plate along the material's falling path to attempt to change the material's falling direction and slow its speed. However, this method has limited buffering effectiveness and remains ineffective in absorbing impact energy for larger pieces or materials falling from greater heights. Others incorporate elastic materials such as rubber pads for cushioning, but relying solely on rubber pads leads to rapid aging and deformation, resulting in decreased cushioning performance. Additionally, some utilize external hydraulic systems containing components such as oil pipes, which are overly complex in design, and incur high installation, commissioning, and maintenance costs, making widespread application in actual production difficult. Utility Model Content

[0003] To address the above problems, the purpose of this utility model is to provide a feeding buffer device for a jaw crusher, which solves the problems of large impact during material feeding, easy damage to receiving equipment, poor buffering effect, and complex structure of existing buffer devices.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a jaw crusher feeding buffer device, comprising a feeding buffer mechanism, wherein the feeding buffer mechanism is installed on the frame of the jaw crusher body, the feeding buffer mechanism includes a baffle, the baffle is located directly below the feeding port of the jaw crusher body, a rubber buffer plate is glued to the side of the baffle facing the feeding port of the jaw crusher body, and clamping seats two and one are fixedly provided vertically at intervals on the side of the baffle facing away from the feeding port of the jaw crusher body, clamping seats two and one are respectively clamped on connecting shaft two and connecting shaft one, connecting shaft two is rotatably mounted on bearing seat one, connecting shaft one is rotatably connected to one end of a hydraulic buffer mechanism, the other end of the hydraulic buffer mechanism is rotatably connected to a connecting shaft three, connecting shaft three is rotatably mounted on bearing seat two, and bearing seats two and one are fixed on the frame of the jaw crusher body.

[0005] The beneficial effects of this utility model are as follows: when the material falls from the discharge port of the jaw crusher body, the baffle is impacted by the material and swings downward. The hydraulic buffer mechanism is driven by the baffle to contract, effectively absorbing the impact potential energy of the material through hydraulic shock absorption, and preventing materials with large potential energy from directly hitting the conveyor belt and causing equipment damage.

[0006] In order to effectively absorb the impact potential energy transferred from the material to the baffle through the use of a hydraulic buffer mechanism; As a further improvement to the above technical solution: the hydraulic buffer mechanism includes a cylinder body, a piston is slidably installed inside the cylinder body, one end of the piston rod is connected to the piston, the other end of the piston rod passes through one end of the cylinder body, and a dynamic sealing mechanism is provided at the connection between the cylinder body and the piston rod. A spring is installed between the side of the piston facing away from the piston rod and the inner end face of the cylinder body. Both ends of the cylinder body are connected to oil nozzles, the other end of the oil nozzles is connected to an oil reservoir, the inner cavity of the cylinder body and the inner cavity of the oil reservoir are connected through oil nozzles and filled with hydraulic oil, and lugs are provided at the opposite ends of the cylinder body and the piston rod.

[0007] The beneficial effects of this improvement are as follows: In the initial state, the spring provides support for the piston. When the baffle is impacted by falling material, the baffle squeezes the hydraulic buffer mechanism, causing the piston rod to contract towards the inside of the cylinder. At this time, the spring undergoes elastic deformation, and the hydraulic oil around the spring is squeezed into the oil storage cylinder. Meanwhile, some of the hydraulic oil in the oil storage cylinder is squeezed into the inner cavity of the cylinder on the other side of the piston. The impact potential energy of the material is buffered and absorbed by the resistance of the liquid flow.

[0008] To ensure the stability of the hydraulic buffer mechanism's support for the baffle; As a further improvement to the above technical solution: the number of hydraulic buffer mechanisms is two, and they are arranged opposite to each other on the left and right sides of the baffle.

[0009] The beneficial effect of this improvement is that the two hydraulic buffer mechanisms can provide balanced and stable support for the baffle.

[0010] To prevent damage caused by excessive impact energy leading to overtravel and contraction of the hydraulic buffer mechanism; As a further improvement to the above technical solution: a limiting rod is fixed on the frame of the jaw crusher body below the baffle. When the bottom surface of the baffle is in contact with the limiting rod, the length of the hydraulic buffer mechanism is not less than the fully retracted length of the hydraulic buffer mechanism.

[0011] The beneficial effects of this improvement are: the limit rod acts as a safety device, rigidly supporting the baffle and preventing the hydraulic buffer mechanism from being damaged by excessive compression.

[0012] In order to effectively improve the structural strength of the baffle; As a further improvement to the above technical solution: multiple reinforcing ribs are welded to the side of the baffle facing away from the feed port of the jaw crusher body.

[0013] The beneficial effects of this improvement are: strengthening the ribs can effectively improve the structural strength of the baffle and prevent the baffle from being deformed and damaged by material impact over a long period of time.

[0014] To ensure the connection strength between the rubber buffer plate and the baffle; As a further improvement to the above technical solution: the surface of the baffle that contacts the rubber buffer plate has a protruding mesh-like snap-fit ​​edge, and the surface of the rubber buffer plate that contacts the baffle has a recessed snap-fit ​​groove that matches the snap-fit ​​edge.

[0015] The beneficial effects of this improvement are: after the snap-fit ​​groove and snap-fit ​​edge are positioned and snapped together, the use of glue can effectively prevent relative sliding between the rubber buffer plate and the baffle, thereby improving the stability of the rubber buffer plate installed on the baffle.

[0016] To allow the material to slide smoothly along the surface of the baffle; As a further improvement to the above technical solution: the end of the baffle away from the connecting shaft 2 is inclined from top to bottom.

[0017] The beneficial effect of this improvement is that the baffle, with its tilt set at a suitable angle, can allow the material to slide smoothly down the surface of the baffle onto the conveyor belt below the baffle after being buffered and received.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention. Figure One ; Figure 2This is a schematic diagram of the structure of the present invention. Figure Two ; Figure 3 This is a schematic diagram of the feeding buffer mechanism of this utility model after removing the rubber buffer plate; Figure 4 This is a schematic diagram of the structure of the rubber buffer plate in this utility model; Figure 5 This is a cross-sectional view of the hydraulic buffer mechanism in this utility model; In the diagram: 1. Jaw crusher body; 2. Feeding buffer mechanism; 3. Baffle; 31. Clamping rib; 32. Reinforcing rib; 4. Clamping seat one; 5. Connecting shaft one; 6. Clamping seat two; 7. Connecting shaft two; 8. Bearing seat one; 9. Hydraulic buffer mechanism; 91. Cylinder; 92. Piston; 93. Piston rod; 94. Spring; 95. Oil nozzle; 96. Oil reservoir; 10. Connecting shaft three; 11. Bearing seat two; 12. Rubber buffer plate; 121. Clamping groove; 13. Limiting rod. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0021] Example 1: like Figure 1As shown in Figure 5: A jaw crusher feeding buffer device includes a feeding buffer mechanism 2, which is mounted on the frame of the jaw crusher body 1. The feeding buffer mechanism 2 includes a baffle 3, which is located directly below the feeding port of the jaw crusher body 1. A rubber buffer plate 12 is adhered to the side of the baffle 3 facing the feeding port of the jaw crusher body 1. A clamping seat 2 6 and a clamping seat 1 4 are fixedly mounted vertically at intervals on the side of the baffle 3 facing away from the feeding port of the jaw crusher body 1. The clamping seat 2 6 and the clamping seat 1 4 are respectively clamped on the connecting shaft 2 7 and the connecting shaft 1 5. The connecting shaft 2 7 is rotatably mounted on the bearing seat 1 8. The connecting shaft 1 5 is rotatably connected to one end of the hydraulic buffer mechanism 9. The other end of the hydraulic buffer mechanism 9... The connecting shaft 3 10 is rotatably connected to the end of the jaw crusher body 1. The connecting shaft 3 10 is rotatably mounted on the bearing seat 2 11. The bearing seat 2 11 and the bearing seat 1 are fixed on the frame of the jaw crusher body 1. When the material falls from the discharge port of the jaw crusher body 1, the baffle 3 is impacted by the material and swings downward. The hydraulic buffer mechanism 9 is driven by the baffle 3 to retract, effectively absorbing the impact potential energy of the material through hydraulic shock absorption, and preventing the material with large potential energy from directly hitting the conveyor belt and causing equipment damage. The hydraulic buffer mechanism 9 includes a cylinder 91. A piston 92 is slidably installed inside the cylinder 91. The piston 92 is connected to one end of a piston rod 93. The other end of the piston rod 93 passes through one end of the cylinder 91. The connection between the cylinder 91 and the piston rod 93 is provided with The system includes a dynamic sealing mechanism. A spring 94 is installed between the side of the piston 92 facing away from the piston rod 93 and the inner end face of the cylinder 91. Both ends of the cylinder 91 are connected to oil nozzles 95, and the other end of each oil nozzle 95 is connected to an oil reservoir 96. The inner cavity of the cylinder 91 and the inner cavity of the oil reservoir 96 are connected through the oil nozzles 95 and filled with hydraulic oil. Lugs are provided at the opposite ends of the cylinder 91 and the piston rod 93. Initially, the spring 94 provides support for the piston 92. When the baffle 3 is impacted by falling material, the baffle 3 compresses the hydraulic buffer mechanism 9, causing the piston rod 93 to contract inwards towards the cylinder 91. At this time, the spring 94 undergoes elastic deformation, and the hydraulic oil around the spring 94 is squeezed into the oil reservoir 96. A portion of the hydraulic oil in the oil reservoir 96... Hydraulic oil is forced into the inner cavity of cylinder 91 on the other side of piston 92. The resistance of the liquid flow buffers and absorbs the impact potential energy of the material. There are two hydraulic buffer mechanisms 9, which are arranged opposite each other on the left and right sides of baffle 3. The two hydraulic buffer mechanisms 9 can provide balanced and stable support for baffle 3. A limit rod 13 is fixed on the frame of jaw crusher body 1 below baffle 3. When the bottom surface of baffle 3 is in contact with the limit rod 13, the length of hydraulic buffer mechanism 9 is not less than the fully retracted length of hydraulic buffer mechanism 9. The limit rod 13 acts as a safety device, which can rigidly support baffle 3 and prevent hydraulic buffer mechanism 9 from being damaged by excessive compression. Multiple reinforcing ribs 32 are welded on the side of baffle 3 facing away from the feed port of jaw crusher body 1.The reinforcing ribs 32 effectively improve the structural strength of the baffle 3, preventing it from deforming and being damaged by material impact over a long period of time. The surface of the baffle 3 that contacts the rubber buffer plate 12 has protruding mesh-like locking ribs 31, and the surface of the rubber buffer plate 12 that contacts the baffle 3 has recessed locking grooves 121 that fit the locking ribs 31. After the locking grooves 121 and locking ribs 31 are mutually positioned and locked, the use of adhesive effectively prevents relative sliding between the rubber buffer plate 12 and the baffle 3, improving the stability of the rubber buffer plate 12 on the baffle 3. The end of the baffle 3 furthest from the connecting shaft 7 is inclined downwards. The baffle 3, with its appropriate angle of inclination, allows the material to smoothly slide down its surface onto the conveyor belt below the baffle 3 after being buffered and received.

[0022] The working principle of this technical solution is as follows: In this application, the feeding buffer mechanism 2 can be installed on the jaw crusher body 1 of various sizes and models. It is only necessary that there is a certain height difference between the jaw crusher body 1 and the material conveying or receiving equipment below. Therefore, the structure and working principle of the jaw crusher body 1 itself are not described here. When the jaw crusher body 1 operates, and the material is discharged from the discharge port, it first impacts the rubber buffer plate 12 on the baffle 3. The rubber buffer plate 12 uses its own elasticity to initially buffer the impact force of the material. As the material continues to impact, the baffle 3 is subjected to a downward force and swings downward around the connecting shaft 7, which in turn pushes the connecting shaft 5, causing the piston rod 93 of the hydraulic buffer mechanism 9 to retract into the cylinder 91. During this process, the piston 92 compresses the spring 94, causing it to undergo elastic deformation. At the same time, the hydraulic oil on both sides of the piston 92 flows between the cylinder 91 and the oil reservoir 96 through the oil nozzle 95, utilizing the resistance of the fluid flow and the elasticity of the spring. The elastic force of spring 94 absorbs the impact potential energy of the material. Due to the two opposing hydraulic buffer mechanisms 9, they can evenly bear the force transmitted by baffle 3, ensuring that baffle 3 stably buffers the impact of the material. When the impact potential energy of the material is too large, causing baffle 3 to swing excessively, the bottom surface of baffle 3 will contact the limit rod 13. The limit rod 13 provides rigid support at this time to prevent the hydraulic buffer mechanism 9 from overtravel and being damaged. After the material is buffered on baffle 3, since the end of baffle 3 away from the connecting shaft 7 is inclined from top to bottom, the material will smoothly slide down the surface of baffle 3 onto the conveyor belt below or into the subsequent processing equipment.

[0023] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the invention; these examples are merely for the purpose of helping to understand the method and core ideas of the invention. The above descriptions are only preferred embodiments of the invention. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of the invention, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this invention.

Claims

1. A jaw crusher material discharge buffer device, characterized by: The device includes a feeding buffer mechanism (2), which is mounted on the frame of the jaw crusher body (1). The feeding buffer mechanism (2) includes a baffle (3), which is located directly below the feeding port of the jaw crusher body (1). A rubber buffer plate (12) is glued to the side of the baffle (3) facing the feeding port of the jaw crusher body (1). A clamping seat 2 (6) and a clamping seat 1 (4) are fixedly installed at intervals on the side of the baffle (3) facing away from the feeding port of the jaw crusher body (1). Clamping seat 2 (6) and clamping seat 1 (4) are respectively clamped on connecting shaft 2 (7) and connecting shaft 1 (5). Connecting shaft 2 (7) is rotatably mounted on bearing seat 1 (8). Connecting shaft 1 (5) is rotatably connected to one end of hydraulic buffer mechanism (9). The other end of hydraulic buffer mechanism (9) is rotatably connected to connecting shaft 3 (10). Connecting shaft 3 (10) is rotatably mounted on bearing seat 2 (11). Bearing seat 2 (11) and bearing seat 1 (8) are fixed on the frame of jaw crusher body (1).

2. The jaw crusher feed buffer device of claim 1, wherein: The hydraulic buffer mechanism (9) includes a cylinder (91), a piston (92) is slidably installed inside the cylinder (91), the piston (92) is connected to one end of a piston rod (93), the other end of the piston rod (93) passes through one end of the cylinder (91), and a dynamic sealing mechanism is provided at the connection between the cylinder (91) and the piston rod (93). A spring (94) is installed between the side of the piston (92) facing away from the piston rod (93) and the inner end face of the cylinder (91). Both ends of the cylinder (91) are connected to oil nozzles (95), and the other end of the oil nozzles (95) is connected to an oil reservoir (96). The inner cavity of the cylinder (91) and the inner cavity of the oil reservoir (96) are connected through the oil nozzles (95) and filled with hydraulic oil. The opposite ends of the cylinder (91) and the piston rod (93) are provided with ear rings.

3. The jaw crusher feed buffer of claim 1, wherein: The hydraulic buffer mechanism (9) consists of two parts, which are arranged opposite each other on the left and right sides of the baffle (3).

4. The jaw crusher feed buffer of claim 1, wherein: A limiting rod (13) is fixed on the frame of the jaw crusher body (1) below the baffle (3). When the bottom surface of the baffle (3) is connected to the limiting rod (13), the length of the hydraulic buffer mechanism (9) is not less than the fully retracted length of the hydraulic buffer mechanism (9).

5. The jaw crusher feed buffer of claim 1, wherein: The baffle (3) has multiple reinforcing ribs (32) welded to the side facing away from the feed port of the jaw crusher body (1).

6. The jaw crusher feed buffer of claim 1, wherein: The surface of the baffle (3) that is in contact with the rubber buffer plate (12) has a grid-like snap-fit ​​edge (31) protruding out, and the surface of the rubber buffer plate (12) that is in contact with the baffle (3) has a snap-fit ​​groove (121) that is suitable for matching the snap-fit ​​edge (31) recessed in.

7. The jaw crusher feed buffer of claim 1, wherein: The end of the baffle (3) away from the connecting shaft (7) is inclined from top to bottom.

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