Jaw plate pressing structure

Abstract

The utility model provides a jaw plate pressing structure, the upper part and the lower part of an upper jaw plate and a lower jaw plate are respectively provided with an inclined surface for pressing, the upper jaw plate and the lower jaw plate are spliced and mounted on the acting surface of a jaw plate main body in an upper section and a lower section, a jaw head protection plate is mounted at the head part of the jaw plate main body, and the lower end of the jaw head protection plate is provided with an inclined surface for pressing; the bottom end of the lower jaw plate is pressed and fixed on the lower part of the jaw plate main body through a jaw plate lower pressing block; the top end of the lower jaw plate and the bottom end of the upper jaw plate are pressed and fixed in the middle of the jaw plate main body through the jaw plate middle pressing block; the top end of the upper jaw plate and the bottom end of the jaw head protection plate are pressed and fixed at the top end of the jaw plate main body through the jaw plate upper pressing block; the top end of the jaw head protection plate is locked with the jaw plate main body through a protection plate bolt; and the locking ends of the jaw plate upper pressing block, the jaw plate middle pressing block and the jaw plate lower pressing block are locked with the jaw plate main body through an anti-loosening disc spring assembly. The jaw plate pressing structure has the advantages that the jaw plate fitting degree is better, the installation stability is higher, the protection capacity is better, and the replacement convenience is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of crushers, in particular to a jaw plate pressing structure. Background Art

[0002] The core components of a jaw crusher include a movable jaw plate and a fixed jaw plate. The movable jaw plate is driven by a crank-rocker mechanism to perform complex swinging movements, working together with the fixed jaw plate to form the crushing chamber. During the crushing process, the jaw plate comes into direct contact with the material, causing it to break down on its surface.

[0003] Therefore, the jaw plate is the main component for crushing materials. To achieve good crushing effect, the jaw plate must be kept from loosening during the crushing process. If the jaw plate is loose, the crushing efficiency will be reduced, and it may also cause equipment accidents and safety accidents such as bolt breakage, weight breakage, and jaw plate falling.

[0004] like Figure 1 As shown, the traditional jaw plate clamping structure is to process the lower part of the movable jaw into a hook shape, and the upper and lower parts of the jaw plate are processed into inclined surfaces. The lower inclined surface of the jaw plate 21 is supported on the inclined surface of the lower hook of the movable jaw, and the jaw plate pressure block 5 is pressed on the upper inclined surface of the jaw plate 21 to press the jaw plate onto the movable jaw. Bolts are installed on the pressure iron, and a double nut structure is used to prevent the bolts from loosening.

[0005] The following problems were found during actual use:

[0006] During feeding, the material impacts or splashes onto the upper part of the movable jaw, causing severe wear on the upper area of the jaw head.

[0007] When discharging, after the lower part of the jaw plate is worn to a certain extent, it begins to wear the hook under the movable jaw, causing the hook to become narrower and narrower, and finally the hook breaks or even the jaw plate falls off.

[0008] As the wear of these two parts increases, the movable jaw often needs to be repaired or even replaced, which results in long downtime and high maintenance costs.

[0009] like Figure 2 As shown, in order to solve this problem, in the subsequent upgrade process, the upper and lower ends of the jaw plate 21 are designed with a jaw plate upper pressure block 5 and a jaw plate lower pressure block 6, so that these pressure block structures can be replaced after wear, and a jaw head guard plate 2 is added on the top to protect the jaw plate body, prevent material impact wear, and replace it regularly.

[0010] This structure reduces downtime to a certain extent, but there are still certain problems. For example, the overall length of the jaw plate is too long, the span at both ends is large, and the stability of the connection through the pressure block is limited, resulting in loose fit in the middle of the jaw plate and impact; the bolts at the jaw head guard plate are easily twisted and broken due to impact, and long-term impact causes the entire movable jaw plate to have the risk of deformation. The nut structure in various places needs to be replaced frequently due to the intensified overall impact.

[0011] In order to solve these problems, it is necessary to make further improvements to the clamping structure of the jaw plate. Utility Model Content

[0012] The purpose of the utility model is to address the deficiencies of the existing technology and thus provide a jaw plate pressing structure with better jaw plate fitting, stronger installation stability, better protection capability and greater replacement convenience.

[0013] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a jaw plate pressing structure, including a jaw plate body, a jaw head guard plate, an upper jaw plate, a lower jaw plate, a jaw plate upper pressing block, a jaw plate lower pressing block, a jaw plate middle pressing block and an anti-loosening disc spring assembly;

[0014] The upper and lower parts of the upper jaw plate and the lower jaw plate are both provided with inclined surfaces for tightening. The upper jaw plate and the lower jaw plate are spliced in two sections and installed on the working surface of the jaw plate body. The jaw head guard is installed on the head of the jaw plate body and is provided with an inclined surface for tightening at the lower end.

[0015] The bottom end of the lower jaw plate is pressed and fixed to the lower part of the jaw plate body by a jaw plate lower pressing block;

[0016] The top end of the lower jaw plate and the bottom end of the upper jaw plate are pressed and fixed to the middle part of the jaw plate body by the jaw plate middle pressure block;

[0017] The top end of the upper jaw plate and the bottom end of the jaw head guard plate are pressed and fixed to the top end of the jaw plate body by the jaw plate pressing block;

[0018] The top end of the jaw head guard plate is locked with the jaw plate body by a guard plate bolt;

[0019] The locking ends of the jaw plate upper pressing block, the jaw plate middle pressing block and the jaw plate lower pressing block are locked with the jaw plate body through an anti-loosening disc spring assembly.

[0020] Preferably, a protective pad is provided between the upper jaw plate and the active surface of the jaw plate body.

[0021] Preferably, a protective pad is provided between the lower jaw plate and the active surface of the jaw plate body.

[0022] Preferably, a middle transition pressing block is provided between the upper jaw plate pressing block and the upper end inclined surface of the upper jaw plate.

[0023] Preferably, the anti-loosening disc spring assembly includes an anti-loosening disc spring and a double nut pre-tightening structure arranged outside the anti-loosening disc spring.

[0024] Preferably, the head of the jaw plate body is provided with an inwardly sunken bevel groove corresponding to the top end of the jaw head guard plate, and the top end of the jaw head guard plate is provided with a corresponding matching bevel groove.

[0025] Preferably, the jaw head upper pressure block, the jaw head middle pressure block and the jaw head lower pressure block all pass through the jaw plate body to the rear side of the jaw plate body through the pulling rod, and are locked with the jaw plate body by the anti-loosening disc spring assembly.

[0026] Preferably, the upper jaw plate and the lower jaw plate have the same structure and the same specifications.

[0027] Preferably, the upper jaw plate pressure block and the middle jaw plate pressure block are both inverted cone structures with a large top and a small bottom.

[0028] Preferably, the jaw plate lower pressing block is a structure with an inwardly recessed inclined groove at the upper end.

[0029] The present invention has substantial features and progress over the prior art. Specifically, the present invention has the following advantages:

[0030] 1. The jaw plate is divided into an upper jaw plate and a lower jaw plate, which shortens the overall length of the jaw plate, making the jaw plate fit more reliably and reducing the specifications of the lifting tools, making lifting safer.

[0031] 2. The upper and lower jaw plates are exactly the same and can be interchanged or reversed according to actual wear conditions, which increases the utilization rate of the jaw plates.

[0032] 3. The inclined surface where the pressure block and jaw plate are pressed is placed further inward to avoid wear of the weight.

[0033] 4. Add anti-loosening disc spring assembly to better absorb and compensate for the slight displacement caused by vibration, and improve the situation of bolt loosening.

[0034] 5. Add a protective pad at the rear of the jaw plate to avoid unevenness on the movable jaw processing surface caused by long-term impact, and transfer the impact damage to the protective pad. Only the protective pad needs to be replaced.

[0035] 6. The jaw head guard is clamped to the movable jaw through the upper and lower inclined surfaces, which makes the structure more reliable and avoids the situation of bolt twisting and breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a basic structural diagram of the jaw plate pressing structure in the prior art.

[0037] Figure 2 It is a schematic diagram of the improved structure of the jaw plate pressing structure in the prior art.

[0038] Figure 3 It is a structural schematic diagram of a jaw plate pressing structure in the utility model.

[0039] In the figure: 1. Jaw plate body; 2. Jaw head guard plate; 3. Upper jaw plate; 4. Lower jaw plate; 5. Jaw plate upper pressure block; 6. Jaw plate lower pressure block; 7. Jaw plate middle pressure block; 8. Anti-loosening disc spring assembly; 9. Guard plate bolt; 10. Protective pad; 11. Middle transition pressure block; 21. Jaw plate. DETAILED DESCRIPTION

[0040] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0041] like Figure 3 As shown, a jaw plate clamping structure includes a jaw plate body 1, a jaw head guard plate 2, an upper jaw plate 3, a lower jaw plate 4, a jaw plate upper pressure block 5, a jaw plate lower pressure block 6, a jaw plate middle pressure block 7 and an anti-loosening disc spring assembly 8.

[0042] The upper and lower parts of the upper jaw plate 3 and the lower jaw plate 4 are both provided with inclined surfaces for tightening. The upper jaw plate 3 and the lower jaw plate 4 are spliced in two sections and installed on the active surface of the jaw plate body 1. A protective pad 10 is provided between the upper jaw plate 3 and the lower jaw plate 4 and the active surface of the jaw plate body 1. The upper jaw plate and the lower jaw plate have the same structure and specifications so as to be interchangeable.

[0043] By dividing the original jaw plate into two sections, the span of the jaw plate is shortened, and the problem of insufficient surface fit between the jaw plate and the working surface of the jaw plate body 1 is avoided. Moreover, due to the addition of the protective pad 10, the working surface is further protected, effectively avoiding the probability of impact damage.

[0044] The jaw head guard plate 2 is installed on the head of the jaw plate body 1 and is provided with a bevel for tightening at the lower end; the head of the jaw plate body 1 is provided with an inward-sunken bevel groove corresponding to the top of the jaw head guard plate 2, and the top of the jaw head guard plate 2 is provided with a corresponding matching bevel corresponding to the bevel groove.

[0045] After the jaw head guard plate 2 is modified, it can be tightly fitted with the jaw plate body 1 through the inclined surfaces at the upper and lower ends, thereby protecting the guard plate bolts 9 and avoiding the problem of distortion, deformation and damage.

[0046] The bottom end of the lower jaw plate 4 is pressed and fixed to the lower part of the jaw plate body by a jaw plate lower pressing block 6. The jaw plate lower pressing block is a structure with an inwardly sunken inclined groove at the upper end.

[0047] The top end of the lower jaw plate 4 and the bottom end of the upper jaw plate 3 are pressed and fixed to the middle part of the jaw plate body 1 through the jaw plate middle pressure block 7;

[0048] The top end of the upper jaw plate 3 and the bottom end of the jaw head guard plate 2 are pressed and fixed to the top end of the jaw plate body 1 by the jaw plate pressure block 5; the jaw plate upper pressure block and the jaw plate middle pressure block are both inverted cone structures with a large top end and a small bottom end.

[0049] A middle transition pressing block 11 is provided between the upper jaw plate pressing block 5 and the upper end inclined surface of the upper jaw plate 3 .

[0050] The top end of the jaw head guard plate 2 is locked to the jaw plate body 1 through a guard plate bolt 9. In this embodiment, the guard plate bolt 9 is also installed using an anti-loosening disc spring assembly.

[0051] The locking ends of the jaw plate upper pressure block 5, jaw plate middle pressure block 7, and jaw plate lower pressure block 6 are locked to the jaw plate body 1 via an anti-loosening disc spring assembly 8. Specifically, in this embodiment, the anti-loosening disc spring assembly includes an anti-loosening disc spring and a double-nut pre-tightening structure disposed outside the anti-loosening disc spring. The jaw head pressure block 5, jaw head middle pressure block 7, and jaw head lower pressure block 6 are all extended through the jaw plate body to the rear side of the jaw plate body via a pulling rod and locked to the jaw plate body by the anti-loosening disc spring assembly.

[0052] Through a series of modifications to the pressing block structure, the pressing block and the jaw plate are fitted more closely and are not exposed, thus avoiding wear and tear of the pressing block.

[0053] The specific installation process is as follows:

[0054] 1. Install the jaw plate pressing block 6 to the lower part of the jaw plate body 1 of the movable jaw, and install the anti-loosening disc spring in front of the double nut to form an anti-loosening disc spring assembly 8.

[0055] 2. Install the protective backing plate 10 onto the large processing surface of the jaw plate main body 1 of the movable jaw.

[0056] 3. Install the bottom end of the lower jaw plate 4 onto the jaw plate lower pressing block 6.

[0057] 4. Install the jaw plate middle pressure block 7 to the middle part of the jaw plate main body 1 of the movable jaw, and install the anti-loosening disc spring in front of the double nut to form an anti-loosening disc spring assembly 8.

[0058] 5. Install the upper jaw plate 3 onto the jaw plate middle pressure block 7.

[0059] 6. Install the intermediate transition pressure block 11 onto the concave inclined surface of the upper jaw plate 3.

[0060] 7. Install the jaw head guard plate 2 onto the upper part of the jaw plate body 1 of the movable jaw, tighten the upper bolts, and make the upper inclined surface of the jaw head guard plate fit tightly against the inclined surface machined on the upper part of the movable jaw.

[0061] 8. Install the jaw plate pressure block 5 between the middle transition pressure block 11 and the jaw head guard plate 2, and install the anti-loosening disc spring assembly in front of the double nut.

[0062] Finally, it should be noted that: The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A jaw plate pressing structure, characterized in that: It includes a jaw plate body, a jaw head guard plate, an upper jaw plate, a lower jaw plate, a jaw plate upper pressure block, a jaw plate lower pressure block, a jaw plate middle pressure block and an anti-loosening disc spring assembly; The upper and lower parts of the upper jaw plate and the lower jaw plate are both provided with inclined surfaces for tightening. The upper jaw plate and the lower jaw plate are spliced in two sections and installed on the working surface of the jaw plate body. The jaw head guard is installed on the head of the jaw plate body and is provided with an inclined surface for tightening at the lower end. The bottom end of the lower jaw plate is pressed and fixed to the lower part of the jaw plate body by a jaw plate lower pressing block; The top end of the lower jaw plate and the bottom end of the upper jaw plate are pressed and fixed to the middle part of the jaw plate body by the jaw plate middle pressure block; The top end of the upper jaw plate and the bottom end of the jaw head guard plate are pressed and fixed to the top end of the jaw plate body by the jaw plate pressing block; The top end of the jaw head guard plate is locked with the jaw plate body by a guard plate bolt; The locking ends of the jaw plate upper pressing block, the jaw plate middle pressing block and the jaw plate lower pressing block are locked with the jaw plate body through an anti-loosening disc spring assembly.

2. The jaw plate pressing structure according to claim 1, characterized in that: A protective pad is provided between the upper jaw plate and the action surface of the jaw plate body.

3. The jaw plate pressing structure according to claim 1 or 2, characterized in that: A protective pad is provided between the lower jaw plate and the action surface of the jaw plate body.

4. The jaw plate pressing structure according to claim 3, characterized in that: A middle transition pressing block is provided between the upper jaw plate pressing block and the upper end inclined surface of the upper jaw plate.

5. The jaw plate pressing structure according to claim 1, 2 or 4, characterized in that: The anti-loosening disc spring assembly includes an anti-loosening disc spring and a double-nut pre-tightening structure arranged outside the anti-loosening disc spring.

6. The jaw plate pressing structure according to claim 5, characterized in that: The head of the jaw plate body is provided with an inwardly sunken inclined groove corresponding to the top end of the jaw head guard plate, and the top end of the jaw head guard plate is provided with a corresponding matching inclined surface corresponding to the inclined groove.

7. The jaw plate pressing structure according to claim 5, characterized in that: The jaw head upper pressing block, the jaw head middle pressing block and the jaw head lower pressing block all pass through the jaw plate body to the rear side of the jaw plate body through the pulling rod, and are locked with the jaw plate body by the anti-loosening disc spring assembly.

8. The jaw plate pressing structure according to claim 1, 2 or 4, characterized in that: The upper jaw plate and the lower jaw plate have the same structure and the same specifications.

9. The jaw plate pressing structure according to claim 1, 2 or 4, characterized in that: The jaw plate upper pressing block and the jaw plate middle pressing block are both inverted cone structures with a large top and a small bottom.

10. The jaw plate pressing structure according to claim 1, 2 or 4, characterized in that: The jaw plate pressing block is a structure with an inwardly sunken inclined groove at the upper end.

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