Toothed plate mounting structure convenient to replace

Abstract

The utility model discloses a toothed plate mounting structure convenient to replace, which comprises through holes formed in a mounting part of a jaw crusher, nut heads in one-to-one correspondence with the through holes are rotationally arranged on the mounting part, meshed outer teeth are arranged on the side walls of two adjacent nut heads, and the thread directions of screw holes in the middles of the two adjacent nut heads are opposite. The toothed plate is pressed and installed on the front face of the installation part through a plurality of bolts in threaded connection with the nut heads, when one nut head rotates in situ, the nut heads rotate along with the nut heads under the action of the outer teeth, and the inserted bolts are screwed in to press the toothed plate. The nut heads with the gear rings are rotationally arranged on the back face of the mounting part, all the nut heads are meshed in sequence, during mounting and dismounting, the bolts only need to stretch into one ends of the nut heads to be pressed tightly, then one nut head is driven by a tool to rotate, the other nut heads rotate along with the nut heads, the bolts are automatically tightened, and independent tightening one by one is not needed; and the nut heads are in a meshed state after being mounted, so that the nut heads are prevented from loosening.

Description

Technical Field

[0001] The utility model relates to an installation structure of a crusher tooth plate, in particular to an installation structure of a tooth plate which is convenient for replacement. Background Art

[0002] The jaw crusher is commonly known as the jaw breaker. It consists of two tooth plates to form a crushing cavity, and is a crusher that simulates the movement of the two jaws of an animal to complete the material crushing operation. It is widely used in the crushing of various ores and large pieces of materials in industries such as mining and smelting, building materials, highways, railways, water conservancy, and chemical engineering.

[0003] The tooth plate of the jaw crusher extrudes the ore to crush the ore. Due to frequent extrusion, the strip teeth on the tooth plate will have relatively large wear. Therefore, the tooth plate needs to be replaced after being used for a period of time. Currently, the tooth plate is fixed to the machine body by a row of ordinary bolts. Because the tooth plate is subjected to a large force during the crushing process, in order to increase the strength of its installation structure, a relatively large number of bolts need to be arranged from left to right for fixing. The large number of bolts will bring a problem, that is, each bolt needs to be screwed when installing and disassembling, which is time-consuming and laborious. Summary of the Utility Model

[0004] Based on the deficiency that the existing tooth plate installation structure uses ordinary bolts and each bolt needs to be screwed one by one during installation, which is time-consuming and laborious, the utility model provides an installation structure of a tooth plate which is convenient for replacement.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] An installation structure of a tooth plate which is convenient for replacement, including installation parts arranged on both sides of the crushing opening of the jaw crusher. The installation parts are provided with a number of equidistant through holes penetrating through their front and back surfaces. Nut heads corresponding to the through holes one by one are rotatably arranged on the back surface of the installation parts. The side walls of adjacent two nut heads are provided with meshing external teeth and the thread directions of the screw holes in the middle of adjacent two nut heads are opposite. The tooth plate is pressed and installed on the front surface of the installation parts by a number of bolts threadedly connected with the nut heads. When one nut head rotates in place, each nut head rotates following under the action of the external teeth, and the inserted bolts are screwed in to press the tooth plate. Wherein the installation parts are installation plates on both sides of the crusher. This solution rotates and arranges nut heads with tooth rings on the back surface of the installation parts, and each nut head meshes in turn. When installing and disassembling, only need to insert the bolts into one end of the nut heads to press, and then drive one of the nut heads to rotate by a tool, and the rest of the nut heads will rotate following, and the bolts will be automatically tightened, without screwing one by one separately. Moreover, after installation, each nut head is in a meshing state, which can also prevent the nut heads from loosening.

[0007] Preferably, a plurality of cylinders are provided on the back of the installation part. An installation bearing is sleeved on the outer side wall of the cylinder. The inner end of the nut head is sleeved on the installation bearing, and the outer end of the nut head has a screw hole and external teeth. This solution is the installation structure of the nut head, and the installation bearing is in interference fit with both the nut head and the cylinder.

[0008] Preferably, a driving gear meshing with the nut head is provided at one end of the nut head. A cylinder body is provided at one end of the driving gear. A driving sleeve is provided on the back side of the installation part. The cylinder body is sleeved on the driving sleeve and rotates through bearing support. This solution is the installation structure of the driving gear, and the bearing is in interference fit with both the cylinder body and the driving sleeve.

[0009] Preferably, a driving hole is provided in the middle of the driving gear and the driving hole. A spline groove is provided on the side wall of the driving hole. A drill bit with splines is inserted into the spline groove, and the drill bit is externally connected to a driving device. Preferably, the driving device is an electric drill. The driving hole is used to set the spline groove to cooperate with the driving device for electric tightening.

[0010] Preferably, the installation part further includes a pressing plate with an installation hole. The bolt sequentially passes through the pressing plate, the toothed plate, and the through hole on the installation part and is threadedly connected to the nut head to press the toothed plate. By adding the pressing plate, the pressing surface area can be increased, and the installation stability of the toothed plate can be improved.

[0011] Preferably, a set of abutting inclined surfaces that abut against each other are provided on the toothed plate and the pressing plate. When the pressing plate presses the toothed plate, the set of abutting inclined surfaces abut against each other, and the abutting inclined surfaces on both sides of the same toothed plate are in an eight-shaped configuration. The inclined surfaces on both sides play a limiting role on the toothed plate.

[0012] Preferably, the installation hole on the pressing plate is a cylindrical stepped hole, and the bolt is a round head bolt. The stepped hole can hide the end of the bolt inside to avoid being impacted by ore.

[0013] Preferably, a regular hexagonal hexagonal groove is provided in the middle of the bolt. This hexagonal groove is used to cooperate with a wrench to tighten a single nut when the bolts are out of sync.

[0014] Preferably, each of the two installation parts is provided with a toothed plate installation structure group. The toothed plate installation structure group includes two toothed plate installation structures arranged on the upper side and the lower side of the installation part. The two toothed plate installation structures in the same group respectively fix the upper side and the lower side of the toothed plate.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: In this application, a nut head with a toothed ring is rotatably arranged on the back of the installation part, and the nut heads are meshed in sequence. When installing and disassembling, only need to insert the bolt into one end of the nut head to press it, and then drive one of the nut heads to rotate through a tool, and the rest of the nut heads will follow to rotate, and the bolt will be automatically tightened without tightening one by one separately. Moreover, after installation, the nut heads are in a meshed state, which can also prevent the nut heads from loosening. Description of the Drawings

[0016] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 is a schematic structural diagram of a jaw crusher;

[0018] Figure 2 is a schematic structural diagram of a jaw crusher;

[0019] Figure 3 is a schematic structural diagram of the tooth plate installation part;

[0020] Figure 4 is an exploded view of the tooth plate installation part (nut head);

[0021] Figure 5 is an exploded view of the tooth plate installation part (drive gear);

[0022] In the figure: 10, jaw crusher; 20, tooth plate; 30, tooth plate installation structure; 301, bolt; 302, drive gear; 3021, cylindrical body; 303, nut head; 3031, connecting sleeve; 304, cylinder; 305, pressing plate; 306, drive sleeve. Detailed Description of the Preferred Embodiment

[0023] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present utility model.

[0024] It should be noted that: similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0025] This embodiment mainly elaborates on the title of the tooth plate installation structure that is convenient for replacement, specifically as follows:

[0026] Main scheme :

[0027] The tooth plate installation structure that is convenient for replacement, such as Figures 1 - 5As shown in the figure, it includes mounting parts arranged on both sides of the crushing opening of the jaw crusher 10. The mounting parts are provided with a number of equally spaced through holes penetrating their front and back surfaces. A nut head 303 corresponding to each through hole is rotatably provided on the back surface of the mounting part. The side walls of adjacent nut heads 303 are provided with meshing external teeth, and the thread directions of the screw holes in the middle of adjacent nut heads 303 are opposite. The tooth plate 20 is pressed and mounted on the front surface of the mounting part by a number of bolts 301 threadedly connected to the nut heads 303. When one nut head 303 rotates in place, each nut head 303 rotates following under the action of the external teeth, and the inserted bolts 301 are screwed in to press the tooth plate 20. The mounting parts are the mounting plates on both sides of the crusher 10. In this solution, by rotatably arranging nut heads 303 with toothed rings on the back surface of the mounting part, each nut head 303 meshes in sequence. When installing and disassembling, only need to extend the bolts 301 to one end of the nut heads 303 to press, and then drive one of the nut heads 303 to rotate through a tool, and the rest of the nut heads 303 will follow to rotate, and the bolts 301 will be automatically tightened without tightening them one by one separately. Moreover, after installation, the meshing state of each nut head 303 can also prevent the nut heads 303 from loosening.

[0028] Rotating connection part of nut head :

[0029] As Figures 3 - 4 shown, a number of cylinders 304 are provided on the back surface of the mounting part. The outer side wall of the cylinder 304 is sleeved with a mounting bearing. The inner end of the nut head 303 is provided with a connecting sleeve 3031 and is sleeved on the mounting bearing through the connecting sleeve 3031. The outer end of the nut head 303 has a screw hole and external teeth. This solution is the mounting structure 30 of the nut head 303. The mounting bearing is in interference fit with both the nut head 303 and the cylinder 304.

[0030] Driving gear part :

[0031] As Figure 5 shown, a driving gear 302 meshing with the nut head 303 is provided at one end of the nut head 303. One end of the driving gear 302 is provided with a cylindrical body 3021. A driving sleeve 306 is provided on the back side of the mounting part. The cylindrical body 3021 is sleeved on the driving sleeve 306 and rotates supported by a bearing. This solution is the mounting structure 30 of the driving gear 302. The bearing is in interference fit with both the cylindrical body 3021 and the driving sleeve 306.

[0032] Preferably, a driving hole is provided in the middle of the driving gear 302 and the driving hole, and a spline groove is provided on the side wall of the driving hole. A drill bit with splines is inserted into the spline groove, and the drill bit is externally connected to a driving device. Preferably, the driving device is an electric drill. The driving hole is used to set the spline groove to cooperate with the driving device for electric tightening.

[0033] Pressure plate part :

[0034] As shown Figures 3 - 5 in the figure, the installation part further includes a pressing plate 305 with installation holes. The bolt 301 passes through the pressing plate 305, the toothed plate 20 and the through holes on the installation part in sequence and is threadedly connected with the nut head 303 to press the toothed plate 20 tightly. By adding the pressing plate 305, the area of the pressing surface can be increased, and the stability of the installation of the toothed plate 20 can be improved.

[0035] Preferably, a set of abutting inclined surfaces that abut against each other are provided on the toothed plate 20 and the pressing plate 305. When the pressing plate 305 presses the toothed plate 20, the set of abutting inclined surfaces abut against each other, and the abutting inclined surfaces on both sides of the same toothed plate 20 are in a V shape. The inclined surfaces on both sides play a role in limiting the toothed plate 20.

[0036] Preferably, the installation hole on the pressing plate 305 is a cylindrical stepped hole, and the bolt 301 is a round head bolt 301. The stepped hole can hide the end part of the bolt 301 inside to avoid being impacted by ore.

[0037] Preferably, a regular hexagon hexagonal groove is provided in the middle of the bolt 301. This hexagonal groove is used to cooperate with a wrench to tighten a single nut when the bolts 301 are out of sync.

[0038] Overall layout :

[0039] As shown Figures 1 - 3 in the figure, each of the two installation parts is provided with a toothed plate 20 installation structure group. The toothed plate 20 installation structure group includes two toothed plate 20 installation structures 30 arranged on the upper side and the lower side of the installation part. The two toothed plate 20 installation structures 30 in the same group respectively fix the upper side and the lower side of the toothed plate 20.

[0040] The above has introduced the title provided by the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and the core idea. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A tooth plate installation structure that is easy to replace, comprising installation parts arranged on both sides of the crushing opening of the jaw crusher, characterized in that: The mounting portion is provided with a plurality of equidistant through holes penetrating the front and back sides thereof, and a nut head corresponding to the through holes is rotatably provided on the back side of the mounting portion, and meshing external teeth are provided on the side walls of two adjacent nut heads, and the thread directions of the screw holes in the middle parts of the two adjacent nut heads are opposite, and the tooth plate is pressed and installed on the front side of the mounting portion by a plurality of bolts threadedly connected to the nut heads. When a nut head rotates in situ, each nut head rotates with it under the action of the external teeth, and the inserted bolts are screwed in to press the tooth plate.

2. The tooth plate installation structure that is easy to replace according to claim 1 is characterized in that: A plurality of cylinders are arranged on the back of the installation part, and installation bearings are sleeved on the outer wall of the cylinders. The inner end of the nut head is sleeved on the installation bearings, and the outer end of the nut head is provided with screw holes and external teeth.

3. The tooth plate installation structure that is easy to replace according to claim 2 is characterized in that: A driving gear meshing with the nut head is provided at one end of the nut head, a cylindrical body is provided at one end of the driving gear, a driving sleeve is provided on the back side of the mounting portion, and the cylindrical body is sleeved on the driving sleeve and rotated by bearing support.

4. The tooth plate installation structure that is easy to replace according to claim 3 is characterized in that: A driving hole is arranged in the middle of the driving gear, a spline groove is arranged on the side wall of the driving hole, a drill bit with splines is inserted in the spline groove, and the drill bit is externally connected to a driving device.

5. The tooth plate installation structure that is easy to replace according to claim 4 is characterized in that: The driving device is an electric drill.

6. The tooth plate installation structure that is easy to replace according to claim 1 is characterized in that: The mounting portion further comprises a pressing plate with a mounting hole, and the bolts pass through the pressing plate, the tooth plate and the through holes on the mounting portion in sequence and are threadedly connected with the nut head to press the tooth plate.

7. The tooth plate installation structure that is easy to replace according to claim 6 is characterized in that: A group of abutting inclined surfaces are arranged on the tooth plate and the pressing plate, and when the pressing plate presses the tooth plate, the abutting inclined surfaces abut against each other, wherein the abutting inclined surfaces on both sides of the same tooth plate are in an eight-shaped shape.

8. The tooth plate installation structure that is easy to replace according to claim 6 or 7, characterized in that: The mounting holes on the pressure plate are cylindrical step holes, and the bolts are round head bolts.

9. The tooth plate installation structure that is easy to replace according to claim 8, characterized in that: A regular hexagonal hexagonal groove is arranged in the middle of the bolt.

10. The tooth plate installation structure that is easy to replace according to claim 1, characterized in that: Each of the two mounting parts is provided with a tooth plate mounting structure group, which includes two tooth plate mounting structures arranged on the upper and lower sides of the mounting part. The two tooth plate mounting structures in the same group fix the upper and lower sides of the tooth plate respectively.

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