Clamp tooth plate and movable jaw device for crushing clamp

Abstract

The utility model relates to the technical field of crushing pincers of excavators, in particular to a pincer tooth plate and movable jaw device for crushing pincers, which comprises a plate body, a movable jaw plate and a movable jaw plate, the clamp tooth assembly is located on the upper end face of the plate body, and the clamp tooth assembly and the plate body are integrally cast, formed and connected; the limiting part comprises a first limiting plate and a second limiting plate, the first limiting plate and the second limiting plate are arranged on the two sides of the plate body and extend downwards, and the first limiting plate and the second limiting plate are the same in structure and are each provided with a plurality of limiting holes; the reinforcing part is arranged on the lower end face of the plate body, the two ends of the reinforcing part are connected with the first limiting plate and the second limiting plate respectively, through the arrangement, the structure of the clamp tooth is firmer, the clamp tooth is not prone to breakage in the working process, the hardness can reach HRC62, the service life is longer, the working efficiency is effectively improved, and manpower, financial resources and material resources are greatly saved.

Description

Technical Field

[0001] The utility model relates to a jaw plate and a movable jaw device for a crushing pliers, belonging to the technical field of crushing pliers for excavators. Background Art

[0002] The crushing pliers is composed of a pliers body, a hydraulic cylinder, a movable jaw and a fixed jaw, and is installed on an excavator for use. It belongs to an excavator attachment. Because of its advantages such as versatility, safety, and environmental protection, it is widely used in the demolition industry. However, at present, the process of welding the jaw teeth to the mother board is adopted. After welding, the metallographic structure of the metal material is damaged. Defects such as the uncertainty of the welding level and the too low hardness of the jaw teeth after welding make the jaw teeth easy to break, not wear-resistant, and have a short service life. And when it is necessary to repair and replace the jaw teeth, the equipment needs to be transported to a professional repair factory or a professional welding technician needs to be invited to the work site. Limited by the field working conditions, welding equipment, cutting equipment, and the welding level of the welder, etc., it will directly affect the service life and quality of the jaw teeth in the later stage, which is time-consuming and laborious, the quality is not guaranteed, and there are risks such as personnel injury during welding. Therefore, it is of great practical significance to study and solve the above problems and defects. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the utility model provides a jaw plate and a movable jaw device for a crushing pliers.

[0004] A jaw plate for a crushing pliers according to the utility model comprises: a plate body, on which a plurality of mounting holes are opened; a jaw tooth assembly, which is located on the upper end surface of the plate body and is integrally cast and connected with the plate body; a limiting part, the limiting part includes a first limiting plate and a second limiting plate which are arranged on both sides of the plate body and both extend downward, the first limiting plate and the second limiting plate have the same structure and both are provided with a plurality of limiting holes; a strengthening part, the strengthening part is arranged on the lower end surface of the plate body, and its two ends are respectively connected with the first limiting plate and the second limiting plate.

[0005] Further, the jaw tooth assembly includes a first breaking tooth arranged along the central axis of the plate body, and a second breaking tooth located behind the first breaking tooth and also arranged along the central axis of the plate body, and further includes a first crushing tooth group and a second crushing tooth group which are symmetrically arranged relative to the central axis of the plate body, and the first crushing tooth group and the second crushing tooth group have the same structure.

[0006] Further, transition inclined surfaces are arranged at the joints of the first breaking tooth, the second breaking tooth, the first crushing tooth group and the second crushing tooth group and the plate body.

[0007] Further, the thickness of the first breaking tooth gradually increases towards its inner direction, and the thickest part of the first breaking tooth is set as an inverted U-shaped plane.

[0008] Further, the vertical distance from the highest point of the first breaking tooth to the plate body is 1.8 - 2.1 times the vertical distance from the highest point of the second breaking tooth to the plate body, and the horizontal distance between the highest points of the two is 1.35 - 1.45 times the vertical distance from the highest point of the first breaking tooth to the plate body.

[0009] Further, the first crushing tooth group and the second crushing tooth group successively include a fixed tooth, a first tooth, a second tooth, and a third tooth from front to back, and the relationship among the height H1 of the first tooth, the height H2 of the second tooth, and the height H3 of the third tooth satisfies H1:H2:H3 = 1:(1.25 - 1.45):(1.5 - 1.7).

[0010] Further, the first tooth is located on both sides of the first breaking tooth, the center line of the first tooth is closer to the fixed tooth than the vertical connection line from the highest point of the first breaking tooth to the plate body, and the second tooth and the third tooth are arranged around the second breaking tooth.

[0011] Further, the relationship among the distance L1 between the fixed tooth and the first tooth, the distance L2 between the first tooth and the second tooth, and the distance L3 between the second tooth and the third tooth satisfies L1:L2:L3 = (1.9 - 2.1):(1.4 - 1.6):1.

[0012] Further, the strengthening part is located on the lower end surface of the plate body below the first breaking tooth, and the distance L4 between one side of the strengthening part and the vertical connection line from the highest point of the first breaking tooth to the strengthening part is 0.75 - 0.9 times the length L5 of the strengthening part.

[0013] The present utility model further provides a movable jaw device, including the above-mentioned pliers tooth plate. A groove adapted to the strengthening part and threaded holes are provided on the movable jaw body at positions corresponding to the mounting holes and the limiting holes, and the pliers tooth plate is connected to the movable jaw through bolts.

[0014] The beneficial effects of the present utility model are as follows.

[0015] (1) Through the above settings, it is avoided that the metal microstructure of the pliers teeth is damaged due to welding, the uncertainty of the welding level, and the defect of too low hardness after welding of the pliers teeth. The pliers tooth structure is made more solid, not easily broken during the working process, the hardness can reach HRC62, and the service life is longer;

[0016] (2) Through the above settings, the later maintenance and replacement are made more convenient and efficient. Only one person can complete the replacement alone, avoiding the situation that the equipment needs to be transported to a professional repair factory or a professional welding technician needs to be invited to the work site when a break occurs, effectively improving the work efficiency and greatly saving manpower, financial resources, and material resources. Brief Description of the Drawings

[0017] Figure 1 It is a perspective view of the jaw plate provided in Embodiment 1 of the present utility model;

[0018] Figure 2 It is a top view of the jaw plate provided in Embodiment 1 of the present utility model;

[0019] Figure 3 It is a bottom perspective view of the jaw plate provided in Embodiment 1 of the present utility model;

[0020] Figure 4 Provided by Embodiment 1 of the present utility model Figure 2 The sectional view taken along line B - B in

[0021] Figure 5 Provided by Embodiment 1 of the present utility model Figure 2 The sectional view taken along line A - A in

[0022] Figure 6 It is a perspective view of the movable jaw after installing the jaw plate provided in Embodiment 2 of the present utility model;

[0023] Figure 7 It is a perspective view of the movable jaw provided in Embodiment 2 of the present utility model.

[0024] Reference numerals: 1, plate body; 2, mounting hole; 3, first limiting plate; 4, second limiting plate; 5, limiting hole; 6, strengthening part; 7, first breaking tooth; 8, second breaking tooth; 9, fixed tooth; 10, first tooth; 11, second tooth; 12, third tooth; 13, movable jaw; 130, groove. Detailed Embodiment

[0025] The following makes a detailed description of the specific embodiments of the present utility model. The present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used are only for describing the specific embodiments and do not limit the present utility model.

[0027] Embodiment 1

[0028] As Figure 1As shown in Fig. 3, the present utility model provides a jaw plate for a crushing pliers, including a plate body 1, and a plurality of mounting holes 2 are provided on the plate body 1; a jaw assembly, which is located on the upper end surface of the plate body 1 and is integrally cast and connected with the plate body 1; a limiting part, the limiting part includes a first limiting plate 3 and a second limiting plate 4 which are arranged on both sides of the plate body 1 and both extend downward, the first limiting plate 3 and the second limiting plate 4 have the same structure and are both provided with a plurality of limiting holes 5; a strengthening part 6, the strengthening part 6 is arranged on the lower end surface of the plate body 1, and both ends thereof are respectively connected with the first limiting plate 3 and the second limiting plate 4. It should be noted that the first limiting plate 3, the second limiting plate 4 and the strengthening part 6 are preferably integrally cast and connected with the plate body 1.

[0029] Through the above settings, first of all, it avoids defects such as the destruction of the metallographic structure of the metal material of the jaws due to welding, the uncertainty of the welding level, and the too low hardness after welding of the jaws, making the jaw structure stronger, not easy to break during the working process, with a hardness of up to HRC62 and a longer service life; secondly, the later maintenance and replacement are more convenient and efficient, and only one person can complete the replacement alone, avoiding the situation that the equipment needs to be transported to a professional repair factory or a professional welding technician is invited to the work site in case of breakage, effectively improving the work efficiency and greatly saving manpower, financial resources and material resources.

[0030] Specifically, as Figure 2 shown, the jaw assembly includes a first breaking tooth 7 arranged along the center line X1 of the plate body 1, and a second breaking tooth 8 located behind the first breaking tooth 7 and also arranged along the center line X1 of the plate body 1. During operation, the first breaking tooth 7 first contacts the concrete block to be crushed and plays a role in the first breakage, and the second breaking tooth 8 is used for the secondary breakage of the fragments generated after the first breakage. It also includes a first crushing tooth group and a second crushing tooth group symmetrically arranged relative to the center line X1 of the plate body 1. The first crushing tooth group and the second crushing tooth group are arranged on both sides of the plate body 1. The first crushing tooth group and the second crushing tooth group are used for further crushing and separating valuable waste from the broken fragments. The first crushing tooth group and the second crushing tooth group have the same structure. It should be noted that in the embodiment of the present utility model, the "rear side" refers to Figure 2 the left side direction; through the above settings, it can not only ensure that the jaw assembly has sufficient structural strength during the working process, reduce the probability of deformation and fracture, and extend the service life, but also ensure that the concrete block to be crushed is fully crushed into small fragments, making it easier to transport. And if the concrete block to be crushed contains steel bars, the steel bars can be separated from the concrete block, and valueless waste and valuable waste can be classified through the crushing function.

[0031] Specifically, as Figure 1As shown in Fig. -2, transition inclined planes are provided at the joints of the first breaking teeth 7, the second breaking teeth 8, the first crushing tooth group and the second crushing tooth group with the plate body 1. By providing the transition inclined planes, the structural strength at the joint with the plate body 1 can be further improved, and the probability of deformation and fracture during the working process can be further reduced.

[0032] Specifically, as Figure 1 shown in Fig. -2, the thickness of the first breaking teeth 7 gradually increases towards its inner direction, and the thickest part of the first breaking teeth 7 is set as an inverted U-shaped plane. The gradually increasing thickness enables the first breaking teeth 7 to ensure sufficient pressure at the contact with the concrete blocks to be crushed, and also ensures that when the reaction force feedback from the concrete blocks to be crushed is transmitted to the inside, it can have sufficient strength to resist the reaction force. The side of the first breaking teeth 7 in contact with the concrete blocks to be crushed is set as an arc, which can reduce the stress concentration caused by the boundary effect and reduce the probability of local damage caused by stress concentration.

[0033] Specifically, as Figure 4 shown, the vertical distance D1 from the highest point of the first breaking teeth 7 to the plate body 1 is 1.8 - 2.1 times the vertical distance D2 from the highest point of the second breaking teeth 8 to the plate body 1, and the horizontal distance D3 between their highest points is 1.35 - 1.45 times the vertical distance D1 from the highest point of the first breaking teeth 7 to the plate body 1. Through the above distance limitations, it can be ensured that the second breaking teeth 8 select the fragments for secondary breaking, avoiding the problem that the fragments after secondary breaking are too large or too small, thus affecting the further crushing and separation efficiency. Only within the above range interval, the fragments after secondary breaking are more conducive to subsequent further crushing and separation, effectively avoiding the problems of incomplete crushing or excessive fine crushing resulting in serious dust emission.

[0034] Specifically, as Figure 1 、 Figure 2 、 Figure 5 shown, the first crushing tooth group and the second crushing tooth group successively include fixed teeth 9, first teeth 10, second teeth 11, and third teeth 12 from front to back. Taking the first crushing tooth group as an example, the relationship between the height H1 of the first teeth 10, the height H2 of the second teeth 11, and the height H3 of the third teeth 12 satisfies H1:H2:H3 = 1:(1.25 - 1.45):(1.5 - 1.7); the fixed teeth 9 are located on the front side of the plate body 1, and the fixed teeth 9 are used to firmly fix the concrete blocks to be crushed to prevent the concrete blocks to be crushed from loosening and slipping. It should be noted that in the embodiment of the present invention, the "front side" is Figure 2The right side direction. By defining the relationships among the heights H1 of the first tooth 10, the height H2 of the second tooth 11, and the height H3 of the third tooth 12, it has multiple functions. First, setting different heights can ensure that the concrete fragments are crushed step by step, preventing continuous crushing by a single local crushing tooth and avoiding damage caused by overuse of a single local crushing tooth. Second, it can better separate valuable waste, avoiding the need for secondary manual separation due to incomplete separation, effectively improving work efficiency. Finally, through the above settings, the crushing process is stable, the equipment runs smoothly, vibrations and noises between components during the crushing process are avoided, and work stability is effectively improved.

[0035] Specifically, as Figure 2 and Figure 5 shown, the first tooth 10 is located on both sides of the first breaking tooth 7. The center line of the first tooth 10 is closer to the fixed tooth 9 relative to the vertical connection line X2 from the highest point of the first breaking tooth 7 to the plate body 1. The second tooth 11 and the third tooth 12 are arranged around the second breaking tooth 8. First, the first tooth 10 cooperates with the first breaking tooth 7. When the first breaking tooth 7 makes the first break, the volume of the concrete fragment is still relatively large at this time. By setting the relatively shorter first tooth 10 on both sides of the first breaking tooth 7, there is enough biting gap for further crushing the larger concrete fragments generated after the first break. And by setting the center line of the first tooth 10 closer to the fixed tooth 9 relative to the vertical connection line from the highest point of the first breaking tooth 7 to the plate body 1, the first tooth 10 can either hold the concrete fragment and then perform further crushing, or when the first breaking tooth 7 makes the first break, the first tooth 10 can intervene in the crushing faster, sharing the pressure for the first breaking tooth 7 and effectively extending the service life of the first breaking tooth 7. Finally, by arranging the second tooth 11 and the third tooth 12 around the second breaking tooth 8, it can further ensure uniform crushing and complete separation.

[0036] Specifically, as Figure 2 shown, the relationship among the distance L1 between the fixed tooth 9 and the first tooth 10, the distance L2 between the first tooth 10 and the second tooth 11, and the distance L3 between the second tooth 11 and the third tooth 12 satisfies L1:L2:L3=(1.9 - 2.1):(1.4 - 1.6):1. By defining the distances between adjacent clamping teeth, it further ensures uniform crushing. On the premise of completely separating valuable waste, it avoids the crushed fragments being too large or too small, and further solves the problems of incomplete crushing or excessive fineness of crushing resulting in serious dust generation.

[0037] Specifically, as Figure 4As shown, the reinforcing part 6 is located on the lower end surface of the plate body 1 below the first breaking tooth 7. The distance L4 between one side of the reinforcing part 6 and the vertical connection line from the highest point of the first breaking tooth 7 to the reinforcing part 6 is 0.75 - 0.9 times the length L5 of the reinforcing part 6. It can be understood that since the reinforcing part 6 is located below the first breaking tooth 7, the vertical connection line from the highest point of the first breaking tooth 7 to the reinforcing part 6 is collinear with the vertical connection line X2 from the highest point of the first breaking tooth 7 to the plate body 1. If L4 is less than 0.75 times L5, at this time, the position of the reinforcing part 6 relative to the first breaking tooth 7 is too lagging. When the first breaking tooth 7 is breaking, the front side of the first breaking tooth 7 receives a downward force, which is more likely to drive the plate body 1 to deform downward around the reinforcing part 6. If L4 is greater than 0.9 times L5, at this time, the position of the reinforcing part 6 relative to the first breaking tooth 7 is too forward, and the reinforcing part 6 cannot coordinate to offset the reaction force generated when the first breaking tooth 7 breaks to the highest point for the first time. Therefore, only within the above range, the reinforcing part 6 not only plays a role in strengthening and supporting, but also plays a role in preventing the plate body 1 from deforming, and also plays a role in limiting the position.

[0038] Embodiment 2

[0039] As Figure 6 -7 shows, the present utility model provides a movable jaw device, including the clamping tooth plate described in Embodiment 1. The movable jaw 13 is used to be hinged with a fixed jaw to form a crushing clamp. It should be noted that since the fixed jaw belongs to the conventional technology in this field, it is not shown in the drawings. A groove 130 adapted to the reinforcing part 6 and threaded holes are provided on the body of the movable jaw 13 at positions corresponding to the mounting hole 2 and the limiting hole 5. The clamping tooth plate is connected to the movable jaw 13 by bolts. The reinforcing part 6 is embedded in the groove 130, and the outer surface of the reinforcing part 6 is in surface contact with the inner surface of the groove 130. By setting it as surface contact, the phenomenon of local stress concentration at the contact between the reinforcing part 6 and the groove 130 can be effectively avoided, which is beneficial to uniform stress distribution and further prolongs the service life. During the actual processing, a certain processing error of the clamping tooth plate relative to the movable jaw 13 is allowed. By providing the limiting hole 5, it can not only share the pressure but also finely adjust the installation position of the clamping tooth plate, further ensuring the working stability.

[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, all possible combinations of the technical features in the above embodiments are not exhaustively listed. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0041] For those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the appended claims.

Claims

1. A clamping tooth plate for a crushing pliers, characterized in that, Comprising: A plate body, on which a plurality of mounting holes are provided; A pair of clamping teeth assemblies, which are located on the upper end surface of the plate body and are integrally cast and connected to the plate body; A limiting part, the limiting part includes a first limiting plate and a second limiting plate which are arranged on both sides of the plate body and both extend downward, the first limiting plate and the second limiting plate have the same structure and are both provided with a plurality of limiting holes; A strengthening part, which is arranged on the lower end surface of the plate body, and its two ends are respectively connected to the first limiting plate and the second limiting plate.

2. The clamping tooth plate for a crushing clamp according to claim 1, wherein The pair of clamping teeth assemblies include a first breaking tooth arranged along the central axis of the plate body, and a second breaking tooth located behind the first breaking tooth and also arranged along the central axis of the plate body, and further include a first crushing tooth group and a second crushing tooth group which are symmetrically arranged relative to the central axis of the plate body, and the first crushing tooth group and the second crushing tooth group have the same structure.

3. The clamping tooth plate for a crushing pliers according to claim 2, wherein, Transition inclined surfaces are arranged at the joints of the first breaking tooth, the second breaking tooth, the first crushing tooth group and the second crushing tooth group with the plate body.

4. The clamping tooth plate for a crushing clamp according to claim 3, characterized in that, The thickness of the first breaking tooth gradually increases towards its inner direction, and the thickest part of the first breaking tooth is set as an inverted U-shaped plane.

5. The clamping tooth plate for a crushing clamp according to claim 2, wherein, The vertical distance from the highest point of the first breaking tooth to the plate body is 1.8 - 2.1 times the vertical distance from the highest point of the second breaking tooth to the plate body, and the horizontal distance between the highest points of the two is 1.35 - 1.45 times the vertical distance from the highest point of the first breaking tooth to the plate body.

6. The clamping tooth plate for a crushing pliers according to claim 2, characterized in that, The first crushing tooth group and the second crushing tooth group successively include a fixed tooth, a first tooth, a second tooth, and a third tooth from front to back, and the relationship among the height H1 of the first tooth, the height H2 of the second tooth, and the height H3 of the third tooth satisfies H1:H2:H3 = 1:(1.25 - 1.45):(1.5 - 1.7).

7. The clamping tooth plate for a crushing pliers according to claim 6, characterized in that, The first tooth is located on both sides of the first breaking tooth, and the center line of the first tooth is closer to the fixed tooth than the vertical connection line from the highest point of the first breaking tooth to the plate body, and the second tooth and the third tooth are arranged around the second breaking tooth.

8. The clamping tooth plate for a crushing pliers according to claim 7, characterized in that, The relationship among the distance L1 between the fixed tooth and the first tooth, the distance L2 between the first tooth and the second tooth, and the distance L3 between the second tooth and the third tooth satisfies L1:L2:L3 = (1.9 - 2.1):(1.4 - 1.6):

1.

9. The clamping tooth plate for a crushing clamp according to claim 8, characterized in that, The strengthening part is located on the lower end surface of the plate body below the first breaking tooth, and the distance L4 between one side of the strengthening part and the vertical connection line from the highest point of the first breaking tooth to the strengthening part is 0.75 - 0.9 times the length L5 of the strengthening part.

10. A movable jaw device, characterized in that, Including the pair of clamping teeth plates according to any one of claims 1 - 9, a groove adapted to the strengthening part is provided on the movable jaw body, and threaded holes are arranged at positions corresponding to the mounting holes and the limiting holes, and the pair of clamping teeth plates are connected to the movable jaw by bolts.

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