CN112024052A - A return material extension system for impact crusher - Google Patents

Abstract

The invention belongs to the technical field of crushers, and particularly relates to a material returning and stretching system for an impact crusher. The device comprises a tail end telescopic device which is arranged at the tail end of a return material conveying frame and has a telescopic function and a head end lifting device which is positioned at the head end of the return material conveying frame and has a lifting function; the head end lifting device comprises a four-connecting-rod jacking assembly and a head support assembly used for connecting the four-connecting-rod jacking assembly with the material returning conveying frame; the tail end telescopic device comprises a telescopic cylinder fixed at the position of the vehicle body and a tail support assembly used for connecting the telescopic cylinder with the material returning conveying frame. The invention can realize the functions of on-line folding and lifting of the returned material conveying frame, thereby effectively improving the efficiency of the transportation operation of the impact crusher.

Description

A return material extension system for impact crusher

technical field

The invention belongs to the technical field of pulverizers, and in particular relates to a return material extension system for an impact crusher.

Background technique

The impact crusher is called impact crusher for short. It is mainly used for metallurgy, chemical industry, building materials, hydropower and other materials that often need to be relocated, especially for the pre-crushing operation of mobile stones such as highways, railways, and hydropower projects. When the impact crusher works, first, the material is sent from the feeding hopper to the feeder, and then the material is sent to the impact crusher through the vibration of the feeder. After crushing, the material falls to the conveyor, and the conveyor sends the material to the return material. The screen, the return screen separates the finished product and the unfinished product through vibration; the unfinished material falls into the transition conveyor, and the transition conveyor transports the material to the return material conveyor frame, and then sends it back to the impact breaker for secondary return material processing, and the finished product is processed by Discharge from the outlet. The traditional return conveyor is a monolithic structure. Affected by the height of the return material, the super-high and super-long material rack is the norm; however, the ultra-high and super-long return conveyor obviously causes the overall size of the impact crusher to increase. , which makes transportation extremely inconvenient. At present, when the impact crusher is transported, it is necessary to disassemble the return conveyor as a whole, even if the return conveyor is transported separately from the impact crusher; after the impact crusher is transported to the work site, the return conveyor is reassembled, obviously. The operation is extremely cumbersome and the transportation efficiency is extremely low, which brings many troubles to the actual use of the impact crusher.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to provide a reasonably structured and practical return material extension system for an impact crusher, which can realize the online folding and lifting functions of the return material conveying frame, thereby effectively improving the Efficiency of the transport operation of the impact crusher.

To achieve the above object, the present invention has adopted the following technical solutions:

A return material extension system for an impact crusher is characterized in that: the system comprises a tail end telescopic device with a telescopic function arranged at the tail end of the return material conveyer; and a head with a lifting function located at the head end of the return conveyer End lifts, where:

The head end lifting device includes a four-link jacking assembly and a head support assembly for connecting the four-link jacking assembly and the return conveying frame; the four-link jacking assembly includes a first Connecting rod, the top end of the first connecting rod is hinged to the head end of the "L"-shaped second connecting rod, the tail end of the second connecting rod is hinged to the head end of the "7"-shaped third connecting rod, and the third connecting rod is hinged. The tail end of the rod is hinged with the head end of the "V"-shaped fourth connecting rod, and the tail end of the fourth connecting rod is hinged at the first connecting rod. Connecting rod structure; when the four-link structure is in the initial state, the vertical rod section at the head end of the second connecting rod and the vertical rod section at the tail end of the fourth connecting rod are vertically attached to each other, and the tail end of the second connecting rod is horizontal The upper surface of the rod segment and the upper surface of the head end cross-bar segment of the third link are on the same horizontal plane, so as to form a resting surface for the first support assembly to rest; the four-link jacking assembly also includes a drive The four-link structure forms a power cylinder in two states: the initial state and the extended state. The cylinder wall of the power cylinder is hinged to the body, and the piston rod end of the power cylinder extends upwards obliquely and is hinged to the vertical rod section at the tail end of the fourth connecting rod. At the shaft; the first support assembly includes a first support roller whose roller shaft is perpendicular to the feeding direction of the return conveyor, and the roller surface of the first support roller is hinged to the third connecting rod through the head end hinge seat vertically arranged by the hinge axis On the upper surface of the crossbar section of the head end; the return conveying frame extends downward with a head end bracket; both ends of the head end bracket extend to both ends of the first idler roller and form a slewing fit relationship with the rotation axis as a horizontal line;

The tail end telescopic device includes a telescopic cylinder fixed at the vehicle body and a tail stock assembly for connecting the telescopic cylinder and the return conveying frame; the tail stock assembly includes a tail stock whose roller length direction is perpendicular to the feeding direction of the return conveying frame The roller, the roller surface of the tail roller is rotatably fitted on the return conveying frame through the tail end hinge seat arranged vertically with the hinge axis; the piston rod end of the telescopic cylinder extends horizontally to the tail end of the return conveying frame, and is connected with the tail end. The brackets are fixedly connected to each other; the two ends of the tail end bracket extend to the two ends of the tail support roller and form a swivel matching relationship with the rotation axis as a horizontal line.

Preferably, the joint between the second link and the third link is the first joint point, and the joint between the third link and the fourth link is the second joint point. When the four-link structure is in the initial state, On the projection of the top view direction, the second hinge point is located on the connecting line between the first hinge point and the head end hinge seat.

Preferably, the V-shaped angle formed by the shaft of the fourth link is an obtuse angle; when the four-link structure is in an extended state, the vertical rod section at the tail end of the second link and the inclined rod at the tail end of the third link The segments fit parallel to each other.

Preferably, the tail end of the fourth connecting rod is hinged at the middle section of the first connecting rod, and the bottom end of the first connecting rod constitutes a hinge end for the cylinder wall end of the power cylinder to be hinged.

Preferably, the head end support is located below the head end of the return conveying frame, and the tail end support is arranged in a gantry form above the tail end of the return conveying frame.

Preferably, the power cylinder and the telescopic cylinder are both hydraulic cylinders.

The beneficial effects of the present invention are:

1) In the present invention, the head end lifting device and the tail end telescopic device are respectively arranged at the head end and the tail end of the return conveying frame, so as to utilize the stretching method of "head oblique lifting + tail horizontal top" to realize the return The material conveying frame changes from a small slope close to the body during transportation to a large slope away from the body during normal operation.

Specifically, for the head end lifting device, the present invention improves the structure of the traditional four-link structure: on the one hand, by connecting the tail end cross-bar section of the first link and the tail end of the second link horizontally The rod segments form the same horizontal line, thereby providing the first support assembly to rest the platform, which ensures the reliable bearing effect on the return conveyor without affecting the normal extension path of the return conveyor. On the other hand, the vertical rod section at the head end of the second connecting rod and the vertical rod section at the tail end of the fourth connecting rod are in parallel with each other, which not only ensures the bearing capacity and compactness of the structure, but also makes the action stroke of the power cylinder tend to be minimize. Through the above cooperation, in actual work, the power cylinder only needs to exert a little force on the vertical rod section at the tail end, even if the entire four-link structure produces a large lifting and unfolding action, the work sensitivity and reliability are extremely high, and the return conveyor The online folding and lifting actions are obvious. For the tail end telescopic device, whenever the head end lifting device produces an outward and upward oblique jacking action, so that the head end of the return conveyor is gradually moved away from the body, the tail end telescopic device will also act accordingly. , and push the tail end of the return conveyor to move away from the body synchronously, and the work coordination is extremely high.

In addition, it is worth noting that due to the particularity of the return conveyor, the height of its tail end is usually not adjusted. Through the horizontally pushed tail end telescopic device, the tail end of the return conveyor can only be pushed away horizontally outwards, thus ensuring that the return conveyor always has an action reference point, that is, the tail end point during the entire movement process; In this way, no matter how the head end of the return conveyer swings and lifts, the final position of the entire return conveyer is always determined. When the impact crusher arrives at the operation site, the return conveyor can quickly expand by the above action reference point, and realize the self-stretching and self-calibration functions, thereby eliminating the on-site calibration process, which is obviously in line with the current fast-paced and high-efficiency. Site production needs.

Through the above-mentioned matching structure, the present invention can realize the online folding and lifting functions of the return conveying frame, thereby effectively improving the efficiency of the transportation operation of the impact crusher.

2) For the first support assembly, its function is to provide the action compensation amount of the return conveyor when it is folded and lifted to ensure that the return conveyor will not be stuck due to assembly errors or cooperation with other auxiliary components. death situation occurs. The first support assembly includes the X-direction slewing system formed by the first idler and the head-end hinge seat arranged vertically with the hinge axis, and the Y-direction slewing system formed by the first idler and the head-end bracket, so as to flexibly play a role. The aforementioned action compensates the effect.

3) The arrangement position of the second hinge point, that is, the hinge point of the third link and the fourth link, is particular. In the projection of the top view, the second hinge point should be located on the line between the first hinge point and the hinge seat of the head end, so as to ensure that in the initial state, when the return conveyor rests on the resting surface, the third hinge The rod and the fourth link can reliably bear the huge mass of the return conveyor, so as to ensure the compactness of the structure, and at the same time ensure the working stability and reliable bearing effect of the overall structure.

4) When the four-link structure is in a fully extended state, the return conveyor is in a high-angle state. At this time, on the one hand, through the concave space formed by the unique "7" structure of the third link, the To the function of accommodating the "L"-shaped corner of the second link, the compactness of the construction is guaranteed. On the other hand, the tail end vertical rod section of the second link and the tail end inclined rod section of the third link are in parallel with each other, so that when the four-link structure is fully extended, the second link and the third link form The matching state similar to the dead point is ensured, thereby ensuring that the present invention can still work reliably and stably under the huge weight of the return conveying frame itself and the huge bumping force during operation, and the practicability is extremely strong.

5) For the first link, it can be directly integrated into the body. In the present invention, the first connecting rod is extended downward, so as to cooperate with the second connecting rod and the fourth connecting rod, it also functions as a fixed base relative to the power cylinder, and realizes the independence of the overall structure. In actual assembly, the present invention can be designed and manufactured independently, and can be directly welded and assembled relative to the vehicle body in the later stage. Even for the existing impact crusher, due to the independent installation feature of the present invention, it is obvious that the existing impact crusher can be directly replaced on site without purchasing a new one, the replacement cost can be significantly reduced, and it is more beneficial to the manufacturer. accepted.

6) The head end bracket is located below the head end of the return conveying rack, which can avoid the phenomenon of high equipment height caused by being arranged above the return conveying rack; similarly, the tail end bracket is arranged in the shape of a gantry in the return conveying Above the end of the rack, this is because the end of the return conveyor has approached the ground, so it is necessary to install the end bracket above the end of the return conveyor to ensure its function.

Description of drawings

Figure 1 is a schematic diagram of the installation position of the four-link jacking assembly in the initial state;

Figure 2 is a front view of the four-link jacking assembly in the initial state;

Fig. 3 is the three-dimensional state diagram of Fig. 2;

Fig. 4 is the front view when the tail end telescopic device is in the extended state;

Fig. 5 is the three-dimensional state diagram of Fig. 4;

Fig. 6 is the front view when the four-link jacking assembly begins to produce the stretching action;

Fig. 7 is the three-dimensional state diagram of Fig. 6;

Figure 8 is a front view of the fully extended four-link jacking assembly;

Fig. 9 is the three-dimensional state diagram of Fig. 8;

FIG. 10 is a schematic diagram of the installation position of the four-link jacking assembly when it is in an extended state.

The actual corresponding relationship between each label of the present invention and the name of the component is as follows:

a-return conveyor

10-Head end lifting device 11-Four-link jacking assembly

11a-first link 11b-second link 11c-third link 11d-fourth link

111- Vertical rod section at the head end 112- Vertical rod section at the tail end 113- Cross rod section at the tail end

114 - Cross bar section at the head end 115 - Inclined bar section at the tail end

12-First support component

12a-head idler 12a 12b-head-end hinged seat 12b 12c-head-end bracket 12c

13-Power cylinder

20-Tail end telescopic device 21-Telescopic cylinder 22-Tail stock assembly

22a-Tail roller 22b-Tail hinge seat 22c-Tail bracket

Detailed ways

For ease of understanding, the specific structure and working mode of the present invention are further described below in conjunction with the accompanying drawings:

The specific structure of the present invention is shown in FIGS. 1-10, and its main components include two parts: the head end lifting device 10 and the tail end telescopic device 20, wherein:

Head end lift 10

The head end lifting device 10 is arranged at the head end of the return conveying frame a, and its function is to lift the return conveying frame to the lifting force obliquely upward, and can realize the timely retraction and reset effect. The specific location is shown in Figure 1-10.

The head end lifting device 10 is composed of two parts, a four-link jacking assembly 11 and a head support assembly 12 . The four-link jacking assembly 11 is a modified structure based on the conventional four-link, including a first link 11a fixed at the vehicle body. The top end of the first link 11a is hinged to the head end of the "L"-shaped second link 11b, and the tail end of the second link 11b is hinged to the head end of the "7"-shaped third link 11c. The tail end of the connecting rod 11c is hinged with the head end of the "V"-shaped fourth connecting rod 11d, and the tail end of the fourth connecting rod 11d is hinged to the middle section of the first connecting rod 11a, and each hinge point is arranged horizontally, As a result, a four-link structure is formed on the vertical plane, as shown in Fig. 2-3 for details.

When the above-mentioned four-link structure is in the initial state as shown in Figures 2-5, the vertical rod section 111 at the head end of the second link 11b and the vertical rod section 112 at the tail end of the fourth link 11d are vertically attached to each other, In addition, the upper surface of the rear end crossbar section 113 of the second link 11b and the upper surface of the head end crossbar section 114 of the third link 11c are on the same horizontal plane, thereby forming a resting surface for the head rest assembly 12 to rest. At the same time, take the hinge point of the second link 11b and the third link 11c as the first hinge point, and the hinge point of the third link 11c and the fourth link 11d as the second hinge point, when the four-link structure is at the initial stage In the state, on the projection of the top view direction, the second hinge point is located on the connecting line between the first hinge point and the head end hinge seat 12b. When the four-link structure is in the extended state as shown in FIGS. 8-10 , the vertical rod section 111 at the rear end of the second link 11b and the inclined rod section 115 at the rear end of the third link 11c are parallel to each other, so as to To ensure its bearing capacity and compact structure.

On the basis of the above structure, the four-link jacking assembly 11 further includes a power cylinder 13 for driving the four-link structure to form the above-mentioned initial and extended states. The power cylinder 13 is a hydraulic cylinder to ensure a huge driving force for the four-link structure. The cylinder wall of the power cylinder 13 is hinged to the vehicle body, and the piston rod end of the power cylinder 13 extends upwards obliquely and is hinged to the vertical rod section 112 at the rear end of the fourth connecting rod 11d.

For the head support assembly 12, it can actually be regarded as the first support roller 12a as the center, the X-axis rotation mechanism formed by the head support roller 12a and the head end hinge seat 12b, and the first support roller 12a and the head end bracket 12c. The Y-axis slewing mechanism is used to ensure that the return conveyor a can always be in a stable posture when the four-link jacking assembly 11 performs the initial and extension actions.

Tail end telescopic device 20

The specific structure of the tail end telescopic device 20 is shown in FIG. 3 and FIG. 5 , which includes a telescopic cylinder 21 fixed to the vehicle body and a tail stock assembly 22 for connecting the telescopic cylinder 21 and the return conveying frame a.

The structure of the tail stock assembly 22 is similar to that of the head stock assembly 12, that is, with the tail support roller 22a as the center, the X-axis rotation mechanism formed by the tail support roller 22a and the tail end hinge seat 22b, and the tail support roller 22a and the tail end The Y-axis slewing mechanism formed by the bracket 22c ensures that the return conveyor a can always be in a stable posture when the four-link jacking assembly 11 performs the initial and extension actions. The difference is that the head end bracket 12c needs to be arranged below the head end of the return conveyor a, while the tail end bracket 22c needs to be arranged above the tail end of the return conveyer a, as shown in FIG. 3 .

Both the first hinge seat 12b and the tail hinge 22b are through-type hinge posts, so in FIG. 3 , they both penetrate through the corresponding roller body and are exposed on the upper surface of the roller body. In actual operation, each hinge seat can also be designed as a conventional hinge structure such as a hinge ear, which will not be repeated here.

For ease of understanding, the specific workflow of the present invention is described as follows with reference to Figures 1-10:

1) When the impact crusher applying the present invention is in the transport state as shown in Figure 1, it can be seen that the telescopic cylinder 21 at the end telescopic device 20 is completely in the return state, so that on the front view shown in Figure 2, The entire return conveyor a is in a straightened state that completely fits the body. The four-link jacking assembly 11 at the head end lifting assembly is in the initial state. At this time, the tail end vertical rod section 111 of the second connecting rod 11b and the first end cross rod section 114 of the third connecting rod 11c cooperate with each other to form a suitable The resting surface on which the head end of the first support assembly 12 and even the entire return conveying frame a rests. Since the above-mentioned resting surface forms a plane structure, even under the bumping force during transportation, it will not have any influence on the transportation stability of the return conveyor a.

2), when the counterattack is broken and transported to the operation site, the present invention performs the following actions:

a. The tail end telescopic device 20 starts to move, the telescopic cylinder 21 lifts, and pushes the tail end of the return conveying frame a to move away from the vehicle body, as shown in Figure 4-5 for details.

b. When the tail end of the return conveyor a reaches the designated position, the head end lifting device 10 starts to act:

First, the power cylinder 13 moves to push the fourth connecting rod 11d to move around the first connecting rod 11a obliquely, so that the entire four-link structure follows up, and gradually forms the state shown in Figures 6-7. After that, the power cylinder 13 continues to lift until the "L"-shaped corner of the second connecting rod 11b snaps into the concave space formed by the unique "7" structure of the third connecting rod The tail end vertical rod section 111 and the tail end inclined rod section 115 of the third connecting rod 11c are in parallel with each other to form an action dead point. Ultimately, the head end lift 10 is in a fully deployed state as shown in Figures 8-9.

When the impact crusher arrives at the work site, the entire above-mentioned action process can be summarized as follows: the tail end telescopic device 20 pushes the rear end of the return conveyor a away from the impact crusher body in place, and the head end lifting device 10 lifts the return material obliquely upward. The head end of the conveying frame a moves around its tail end until the head end of the return conveying frame a moves in place. At this time, the overall working state of the return conveyor a is shown in FIG. 10 . In the state of Fig. 10, the impact crusher or the impact crusher can work normally. When the counterattack work is completed and the operation site needs to be moved, the above steps can be reversed. Obviously, in the above-mentioned whole operation process, the return conveyor a is assembled on the body of the impact crusher instead of being disassembled separately. It is more dexterous and convenient to use, and the effect is more remarkable in the moving operation of multiple operation sites.

Of course, the above is one of the specific embodiments of the present invention. In actual operation, the equivalent replacement as a power source, such as the adaptive replacement of the power cylinder 13 and the telescopic cylinder 21 with other power components, etc., and the structure of the connecting rods that make up the four-link structure do not affect their own working performance. fine-tuning the shape of the headstock assembly 12 and the corresponding roller bodies at the tailstock assembly 22 into cylindrical, prismatic or even curved rod shapes, etc., such conventional structural changes made on the basis of the known structure of the present invention should be Equivalent or similar designs are intended to fall within the scope of the present invention.

Claims (6)

1. A return material extension system for an impact crusher, characterized in that: the system comprises a tail end telescopic device (20) with a telescopic function arranged at the tail end of the return material conveyer; and a starter located at the head end of the return conveyer Head end lifting device (10) for lifting function, wherein: The head-end lifting device (10) includes a four-link jacking assembly (11) and a head support assembly (12) for connecting the four-link jacking assembly (11) and the return conveying frame; the four-link jacking assembly (12) The rod jacking assembly (11) comprises a first connecting rod (11a) fixed at the vehicle body, the top end of the first connecting rod (11a) is hinged with the head end of an "L"-shaped second connecting rod (11b), and the second connecting rod (11b) is hinged at the top of the first connecting rod (11a). The tail end of the connecting rod (11b) is hinged with the head end of the "7"-shaped third connecting rod (11c), and the tail end of the third connecting rod (11c) is connected with the "V"-shaped fourth connecting rod (11d) ) is hinged at the head end, the tail end of the fourth connecting rod (11d) is hinged at the first connecting rod (11a), and all the hinges are arranged horizontally, thereby forming a four-link structure on the vertical plane; When the structure is in the initial state, the vertical rod section (111) at the head end of the second connecting rod (11b) and the vertical rod section (112) at the rear end of the fourth connecting rod (11d) are vertically attached to each other, and the second connecting rod The upper surface of the rear end crossbar section (113) of (11b) is on the same horizontal plane as the upper surface of the head end crossbar section (114) of the third link (11c), thereby forming the available first support assembly (12) A resting surface for resting; the four-link jacking assembly (11) further includes a power cylinder (13) for driving the four-link structure to form an initial state and an extended state, the cylinder of the power cylinder (13) The wall is hinged to the body, and the piston rod end of the power cylinder (13) extends upwards obliquely and is hingedly connected to the shaft of the vertical rod section (112) at the rear end of the fourth connecting rod (11d); the head support assembly (12) includes The first idler (12a) of which the roller shaft is perpendicular to the feeding direction of the return conveyor, the roller surface of the first idler (12a) is hinged to the third connecting rod ( 11c) on the upper surface of the head-end crossbar section (114); a head-end bracket (12c) extends downward at the return conveying frame; The end and its rotation axis is a horizontal line to form a swivel fitting relationship; The tail end telescopic device (20) comprises a telescopic cylinder (21) fixed at the vehicle body and a tail stock assembly (22) for connecting the telescopic cylinder (21) and a return conveying frame; the tail stock assembly (22) It includes a tail roller (22a) whose length direction of the roller is perpendicular to the feeding direction of the return conveyor, and the roller surface of the tail roller (22a) is rotatably matched to the return conveyor through a tail end hinge seat (22b) vertically arranged by the hinge axis up; the end of the piston rod of the telescopic cylinder (21) extends horizontally to the tail end of the return conveying frame, and is fixedly connected with the tail end bracket (22c); both ends of the tail end bracket (22c) extend to the tail roller (22a) The two ends are in a swivel fitting relationship with the horizontal axis of rotation. 2. A return material extension system for an impact crusher according to claim 1, characterized in that: the first hinge point is the hinge joint of the second connecting rod (11b) and the third connecting rod (11c), The hinge point between the third link (11c) and the fourth link (11d) is the second hinge point. When the four-link structure is in the initial state, the second hinge point is located at the first hinge point on the projection of the top view direction. On the connecting line with the head end hinge seat (12b). 3. A return material extension system for an impact crusher according to claim 2, characterized in that: the V-shaped angle formed by the shaft of the fourth connecting rod (11d) is an obtuse angle; When in the extended state, the vertical rod section (111) at the rear end of the second link (11b) and the inclined rod section (115) at the rear end of the third link (11c) are in parallel with each other. 4. A return material extension system for an impact crusher according to claim 1, 2 or 3, characterized in that: the tail end of the fourth connecting rod (11d) is hinged to the first connecting rod (11a) At the middle section of the shaft, the bottom end of the first connecting rod (11a) constitutes a hinged end for the cylinder wall end of the power cylinder (13) to be hinged. 5. A return material extension system for an impact crusher according to claim 1, 2 or 3, characterized in that: the head end bracket (12c) is located below the head end of the return material conveying frame, and the tail end The bracket (22c) is arranged in the shape of a gantry above the rear end of the return conveying frame. 6 . The material returning extension system for an impact crusher according to claim 1 , wherein the power cylinder ( 13 ) and the telescopic cylinder ( 21 ) are both hydraulic cylinders. 7 .

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