Mounting platform suitable for rocker arm of coal mining machine and using method of mounting platform

Abstract

The invention relates to the technical field of rocker arm mounting platforms, in particular to a rocker arm mounting platform suitable for a coal mining machine and a using method of the rocker arm mounting platform. A bottom supporting steel plate is installed at the bottom end in the platform body, vertical supporting steel rods are installed on the two sides of the upper end of the bottom supporting steel plate, edge protection baffles are installed at the upper ends of the vertical supporting steel rods, first inclined clamping plates are installed at the side ends of the edge protection baffles, and transverse clamping plates are installed at the side ends of the first inclined clamping plates. Second inclined clamping plates are installed at the side ends of the transverse clamping plates, and reinforcing supporting steel bars are installed at the upper ends of the bottom supporting steel plates. According to the platform, the rocker arm mounting procedure is simplified, the construction progress is accelerated, the coal mining machine can be put into use more quickly, the downtime during equipment mounting is shortened, the equipment utilization rate is increased, more production benefits are created for enterprises, meanwhile, the stability of the rocker arm in the transportation and mounting process is ensured, and the coal mining machine can be used more quickly. And an operator does not need to carry out repeated adjustment in a complicated and dangerous bracket operation environment.

Description

Technical Field

[0001] The present invention relates to the technical field of rocker arm installation platforms, and particularly to a rocker arm installation platform applicable to a shearer and its usage method. Background Art

[0002] During the installation process of fully-mechanized mining face equipment, the shearer is an important equipment in the installation, and its safe and efficient installation is crucial. The traditional installation method is that when installing the fully-mechanized mining face equipment, first install the hydraulic support, and then suspend the rocker arm below the front cantilever beam of the support with a small chain. Adjust the relative position between the rocker arm and the frame by raising, lowering, advancing, and retreating the support until the pin holes of the two are aligned and then install the pin shaft.

[0003] The traditional installation method relies on the lifting and forward and backward movement of the hydraulic support platform to adjust the position of the rocker arm. However, the stroke and movement range of the support are limited, and it is difficult to achieve fine alignment, especially in a narrow space. It may be necessary to adjust repeatedly many times to align the pin holes. And each adjustment requires operating multiple groups of supports, with poor action coherence. Moreover, the rocker arm is heavy, and only indirectly applying force through the support makes the adjustment process slow, time-consuming, and prolongs the overall installation cycle.

[0004] Therefore, aiming at the problems of limited platform adjustment space, low work efficiency, and prominent safety hazards of the above traditional installation method, a rocker arm installation platform applicable to a shearer and its usage method can be designed. Summary of the Invention

[0005] In order to overcome the problems of limited platform adjustment space, low work efficiency, and prominent safety hazards of the traditional installation method.

[0006] The technical solution is as follows: A rocker arm installation platform applicable to a shearer includes a platform body; a bottom support steel plate is installed at the bottom end inside the platform body, vertical support steel rods are installed on both sides of the upper end of the bottom support steel plate, an edge protection baffle is installed at the upper end of the vertical support steel rods, a first inclined clamping plate is installed at the side end of the edge protection baffle, a transverse clamping plate is installed at the side end of the first inclined clamping plate, a second inclined clamping plate is installed at the side end of the transverse clamping plate, and a reinforcing support steel bar is installed at the upper end of the bottom support steel plate.

[0007] Further, a reinforcing connecting bar is installed at the lower end of the transverse clamping plate, a compression-resistant steel rod is installed at the lower end of the reinforcing connecting bar, and bearing plates are installed at both lower sides of the compression-resistant steel rod.

[0008] Further, a lifting ring is installed at the center of the outer side of the bottom support steel plate.

[0009] Further, the reinforcing support steel bar is an I-shaped steel, and a clamping groove is formed between the first inclined clamping plate, the transverse clamping plate, and the second inclined clamping plate.

[0010] Furthermore, a top horizontal strut is installed at the upper end of the reinforcing support steel bar, and multiple groups of equally spaced partition struts are installed outside the top horizontal strut.

[0011] Furthermore, multiple groups of partition bracing plates are installed between two groups of partition struts.

[0012] Usage method of the shearer boom installation platform. Use the shearer boom installation platform as described above, and its characteristics are as follows: The steps are as follows: S1: Insert the shovel of the 55E scraper into the bottom of the platform body, and use a 40T small chain to pass through the lifting ring at the bottom of the platform body to annularly bind the shovel and the platform body, ensuring that the lifting ring serves as the force-bearing anchor point to disperse the binding force and prevent the platform body from tipping over, and then transport it to the installation position of the shearer at the working face: S21: Utilize the lifting function of the 55E scraper to place the left boom on the platform body. Ensure that the bottom surface of the boom contacts the top horizontal strut at the upper end of the reinforcing support steel bar. Through the high bending resistance of the reinforcing support steel bar, disperse the weight of the boom. Align the two edges of the boom with the inner side of the edge protection baffle, and use the inclination angles of the first diagonal clamping plate and the second diagonal clamping plate to guide the boom to slide into the card slot to form a "V-shaped" clamping structure; S22: Pass a 40T small chain through the reserved connection hole of the transverse clamping plate to fix the middle part of the boom to the transverse clamping plate, and use the horizontal supporting force of the transverse clamping plate to prevent the boom from swaying left and right; Connect the transverse clamping plate and the compressive steel rod through the reinforcing link to form a vertical tensile force transmission, ensuring that the binding force is transmitted to the load-bearing plate through the reinforcing link to avoid overloading of a single point of force, and confirm that the direction of the boom pin hole is consistent with the advancing direction of the platform body: S31: The scraper lifts the platform body to the installation height. During the process, observe the deformation of the compressive steel rod, use its high-strength characteristics to bear the vertical load, and slowly move the scraper under the guidance of the ground commander to initially align the boom pin hole with the frame installation pin hole. At this time, the edge protection baffle serves as a visual reference to assist in judging the lateral position deviation; S32: Use the lifting ring at the bottom of the platform body in cooperation with a manual hoist to make left and right fine-tuning to ensure that the central axes of the pin holes coincide; S41: Insert the fork teeth of the JUG-A-O multi-functional forklift into the bottom of the boom pin shaft, and horizontally lift the pin shaft through the lifting function of the forklift to align it with the pin hole and install the pin shaft; S42: After the pin shaft is completely inserted, install the matching cover plate and fix the cover plate to the frame with bolts. During the process, check the swinging freedom of the boom to ensure that there is no jamming: S5: After the pin shaft and cover plate are installed, first remove the connecting chain between the transverse clamping plate and the rocker arm, and then loosen the binding chain between the lifting ring and the scraper plate. Ensure that the rocker arm remains stationary during the untying process. After confirming that the rocker arm is completely fixed on the frame, the scraper plate vehicle slowly retreats to the designated safe position. Observe the contact situation between the load-bearing plate at the bottom of the platform body and the roadway floor during the process to avoid scratching. S6: Using the thrust at the front end of the scraper plate vehicle, slowly push the coal shearer body and the bottom chute towards the tail of the machine, align the chute interfaces, align the pin holes of the chute interfaces, and use special tools to drive the dumbbell pins in to ensure that the pin holes and the dumbbell pins fit tightly to complete the chute connection. Step Seven: The left rocker arm is installed. Step Eight: Install the right rocker arm and crusher using the same method.

[0013] Furthermore, in step S22, a grid structure composed of a partition strut and a partition support plate is used to limit the front end of the rocker arm to prevent it from moving back and forth during transportation.

[0014] Furthermore, in step S32, the reinforcement support steel bars and the top transverse struts form a rigid framework to inhibit the deformation of the platform during adjustment and ensure the position accuracy of the rocker arm.

[0015] The beneficial effects are as follows: Using the platform of the present invention, only 4 people in 1 shift are required to complete the operation, while the traditional installation method requires 2 shifts with 4 people in each shift to complete the installation of the coal shearer. Calculated at 500 yuan per person's labor cost, the labor cost can be saved by 500×4 = 0.20 ten thousand yuan for installing 1 coal shearer. If 30 coal shearers are installed on average every year, the annual labor cost can be saved up to 6.0 ten thousand yuan, effectively reducing the labor cost of the enterprise and improving the economic benefits; the platform simplifies the installation process of the rocker arm, speeds up the construction progress, enables the coal shearer to be put into use faster, reduces the downtime during equipment installation, improves the utilization rate of the equipment, and creates more production benefits for the enterprise; The traditional installation method relies on the hydraulic support to lift the rocker arm, which has serious safety hazards caused by the broken chain of the support lifting. However, this platform replaces this unsafe lifting method, fundamentally avoiding the risk of broken chain, providing a safer working environment for the operators, ensuring the safety of personnel's lives. Through reasonable structural design and fixing methods, the platform ensures the stability of the rocker arm during transportation and installation. The operators do not need to make repeated adjustments in a complex and dangerous support operation environment, reducing the probability of safety accidents caused by operation errors or environmental factors, making the entire installation process safer and more controllable; This platform is suitable for the installation operation of coal shearers under the mining height conditions of 3 - 10 meters, with strong adaptability. Whether it is in a low mining height or a high mining height working face, it can provide reliable support for the installation of the rocker arm of the coal shearer and meet the production needs of different mines. Description of the Drawings

[0016] Figure 1 This is a three-dimensional structure schematic diagram of the installation platform for the shearer rocker arm applicable to the present invention; Figure 2 This is a three-dimensional structure schematic diagram from another angle of the present invention; Figure 3 This is a three-dimensional structure schematic diagram of the transverse clamping plate of the present invention.

[0017] In the attached drawing reference numerals: 1, platform body; 2, bottom support steel plate; 3, vertical support steel rod; 4, edge protection baffle; 5, first inclined clamping plate; 6, transverse clamping plate; 7, second inclined clamping plate; 8, reinforcement support steel bar; 9, reinforcement connecting bar; 10, compression-resistant steel rod; 11, load-bearing plate; 12, lifting ring; 13, top transverse support bar; 14, partition support bar; 15, partition support plate. Detailed implementation manners

[0018] The following is a specific introduction to the present invention in combination with the attached drawings and specific embodiments.

[0019] Embodiment 1 As Figures 1 - 3 shown, the present invention provides an embodiment: an installation platform for the shearer rocker arm, including a platform body 1; a bottom support steel plate 2 is installed at the inner bottom end of the platform body 1, vertical support steel rods 3 are installed on both sides of the upper end of the bottom support steel plate 2, an edge protection baffle 4 is installed at the upper end of the vertical support steel rod 3, a first inclined clamping plate 5 is installed at the side end of the edge protection baffle 4, a transverse clamping plate 6 is installed at the side end of the first inclined clamping plate 5, a second inclined clamping plate 7 is installed at the side end of the transverse clamping plate 6, and a reinforcement support steel bar 8 is installed at the upper end of the bottom support steel plate 2.

[0020] A reinforcement connecting bar 9 is installed at the lower end of the transverse clamping plate 6, a compression-resistant steel rod 10 is installed at the lower end of the reinforcement connecting bar 9, and load-bearing plates 11 are installed at both lower sides of the compression-resistant steel rod 10.

[0021] A lifting ring 12 is installed at the center of the outer side of the bottom support steel plate 2.

[0022] The reinforcement support steel bar 8 is an I-shaped steel, and a clamping groove is formed between the first inclined clamping plate 5, the transverse clamping plate 6 and the second inclined clamping plate 7.

[0023] A top transverse support bar 13 is installed at the upper end of the reinforcement support steel bar 8, and multiple groups of partition support bars 14 are installed at equal intervals on the outer side of the top transverse support bar 13.

[0024] Multiple groups of partition support plates 15 are installed between two groups of partition support bars 14.

[0025] The using method of the installation platform for the shearer rocker arm, using the installation platform for the shearer rocker arm as described above, is characterized in that the steps are as follows: S1: Insert the shovel plate of the 55E shovel truck into the bottom of the platform body 1, and use a 40T small chain to pass through the lifting ring 12 at the bottom of the platform body 1 to circularly bind the shovel plate to the platform body. Ensure that the lifting ring 12 serves as the force-bearing anchor point to disperse the binding force and prevent the platform body from tipping over. Then transport it to the installation position of the shearer at the working face: S21: Utilize the lifting function of the 55E shovel truck to place the left rocker arm on the platform body 1, Ensure that the bottom surface of the rocker arm contacts the top cross brace 13 at the upper end of the reinforced support steel bar 8. Disperse the weight of the rocker arm through the high bending resistance performance of the reinforced support steel bar 8. Align the two edges of the rocker arm with the inner side of the edge protection baffle 4, and utilize the inclination angles of the first diagonal clamping plate 5 and the second diagonal clamping plate 7 to guide the rocker arm into the card slot to form a "V-shaped" clamping structure; S22: Pass a 40T small chain through the reserved connection hole of the transverse clamping plate 6 to fix the middle part of the rocker arm to the transverse clamping plate 6, and utilize the horizontal support force of the transverse clamping plate 6 to prevent the rocker arm from swaying left and right; Connect the transverse clamping plate 6 and the compression-resistant steel rod 10 through the reinforced connecting bar 9 to form a vertical tension conduction, ensuring that the binding force is transmitted to the load-bearing plate 11 through the reinforced connecting bar 9 to avoid overloading of a single point of force. Confirm that the direction of the rocker arm pin hole is consistent with the advancing direction of the platform body 1, and utilize the grid structure composed of the partition support bar 14 and the partition support plate 15 to limit the front end of the rocker arm to prevent it from moving back and forth during transportation: S31: The shovel truck lifts the platform body 1 to the installation height. During the process, observe the deformation of the compression-resistant steel rod 10, utilize its high-strength characteristics to bear the vertical load, and slowly move the shovel truck under the guidance of the ground commander to initially align the rocker arm pin hole with the frame installation pin hole. At this time, the edge protection baffle 4 serves as a visual reference to assist in judging the lateral position deviation; S32: Utilize the lifting ring 12 at the bottom of the platform body 1 in cooperation with a manual hoist for left and right fine-tuning to ensure that the central axes of the pin holes coincide. The reinforced support steel bar 8 and the top cross brace 13 form a rigid framework to inhibit platform deformation during the adjustment process and ensure the position accuracy of the rocker arm; S41: Insert the fork teeth of the JUG-A-O multi-functional forklift into the bottom of the rocker arm pin shaft, horizontally lift the pin shaft through the lifting function of the forklift, align it with the pin hole, and install the pin shaft; S42: After the pin shaft is completely inserted, install the matching cover plate, and fix the cover plate to the frame with bolts. During the process, check the swing freedom of the rocker arm to ensure no jamming: S5: After the pin shaft and the cover plate are installed, first remove the connecting chain between the transverse clamping plate 6 and the rocker arm, and then loosen the binding chain between the lifting ring 12 and the shovel plate. Ensure that the rocker arm remains stationary during the unbinding process. After confirming that the rocker arm is completely fixed on the frame, the shovel truck slowly retreats to the designated safe position. During the process, observe the contact situation between the load-bearing plate 11 at the bottom of the platform body 1 and the roadway floor to avoid scratching: S6: Using the thrust at the front end of the scraper loader, slowly push the coal shearer body and the bottom chute towards the tail end of the machine to align the chute interfaces, align the pin holes of the chute interfaces, and use a special tool to drive the dumbbell pins in to ensure a tight fit between the pin holes and the dumbbell pins, thus completing the connection of the chutes: Step Seven: The left rocker arm is installed. Step Eight: Install the right rocker arm and the crusher using the same method.

[0026] Experimental Example Use the traditional installation method, that is, first complete the installation of the hydraulic support, then use a small chain to hang the rocker arm under the front-probing beam of the support, and adjust the relative position between the rocker arm and the frame by raising, lowering, advancing, and retreating the support until the pin holes of the two are aligned and then install the pin shaft as the control group, and use the installation method applicable to the rocker arm installation platform of the coal shearer invented above as the experimental group; Select multiple fully-mechanized coal mining faces with similar geological conditions and a mining height range of 3 - 10 meters as experimental samples. For each working face, install the rocker arm of the coal shearer using the control group and the experimental group respectively. The sample size can be determined according to the actual situation, and 10 working faces are selected for each; Installation time: The time from the start of preparing to install the rocker arm to the rocker arm being completely fixed on the frame and completing the connection of the chutes, and use a timer to accurately time; Labor cost: Record the number of workers involved in the installation process and the labor cost per person, and calculate the total labor cost; Installation accuracy: After installation, measure the concentricity error between the pin holes of the rocker arm and the installation pin holes of the frame, and the parallelism error between the rocker arm and the frame, using professional measuring tools such as dial indicators and laser rangefinders; Safety accident incidence rate: Record the number of safety accidents that occurred during the installation process, such as broken chains of the support, slipping of the rocker arm, and injuries to personnel, and calculate the safety accident incidence rate, that is, the number of safety accidents / total number of installations × 100%; Equipment utilization rate: Statistically calculate the time interval from the start of installing the coal shearer to its being put into use, and the idle time of the equipment during the installation period, and calculate the equipment utilization rate, that is, the actual working time of the equipment / (the actual working time of the equipment + the idle time of the equipment) × 100%:

Claims

1. Applicable to the installation platform of the shearer rocker arm, characterized in that, It includes a platform body (1); at the inner bottom end of the platform body (1), a bottom support steel plate (2) is installed. On both sides of the upper end of the bottom support steel plate (2), vertical support steel rods (3) are installed. At the upper end of the vertical support steel rods (3), an edge protection baffle (4) is installed. At the side end of the edge protection baffle (4), a first inclined clamping plate (5) is installed. At the side end of the first inclined clamping plate (5), a transverse clamping plate (6) is installed. At the side end of the transverse clamping plate (6), a second inclined clamping plate (7) is installed. At the upper end of the bottom support steel plate (2), a reinforcing support steel bar (8) is installed.

2. The mounting platform for the shearer rocker arm according to claim 1, characterized in that, At the lower end of the transverse clamping plate (6), a reinforcing connecting bar (9) is installed. At the lower end of the reinforcing connecting bar (9), a compressive steel rod (10) is installed. At the lower ends of both sides of the compressive steel rod (10), load-bearing plates (11) are installed.

3. The mounting platform for the shearer rocker arm according to claim 1, wherein At the center of the outer side of the bottom support steel plate (2), a lifting ring (12) is installed.

4. The rocker arm mounting platform for coal mining machines according to claim 1, characterized in that: The reinforcing support steel bar (8) is an I-shaped steel. A clamping groove is formed between the first inclined clamping plate (5), the transverse clamping plate (6) and the second inclined clamping plate (7).

5. The rocker arm mounting platform for coal mining machines according to claim 1, characterized in that: At the upper end of the reinforcing support steel bar (8), a top transverse support rod (13) is installed. On the outer side of the top transverse support rod (13), multiple groups of equally spaced partition support rods (14) are installed.

6. The rocker arm mounting platform for coal mining machines according to claim 5, characterized in that: Between two groups of partition support rods (14), multiple groups of partition support plates (15) are installed.

7. Method for using the installation platform of the shearer rocker arm, using the installation platform for the shearer rocker arm as described in any one of claims 1-6, characterized in that: The steps are as follows: S1: Shovel the shovel plate of the 55E shovel loader into the bottom of the platform body (1), and use a 40T small chain to pass through the lifting ring (12) at the bottom of the platform body (1), and circularly bind the shovel plate and the platform body to ensure that the lifting ring (12) serves as a force-bearing anchor point to disperse the binding force and prevent the platform body from tipping over. Then transport it to the installation position of the shearer at the working face: S21: Utilize the lifting function of the 55E shovel loader to place the left rocker arm on the platform body (1), Ensure that the bottom surface of the rocker arm contacts the top transverse support rod (13) at the upper end of the reinforcing support steel bar (8). Through the high bending resistance of the reinforcing support steel bar (8), disperse the weight of the rocker arm. Align the two side edges of the rocker arm with the inner side of the edge protection baffle (4). Utilize the inclination angles of the first inclined clamping plate (5) and the second inclined clamping plate (7) to guide the rocker arm to slide into the clamping groove to form a "V-shaped" clamping structure; S22: Pass a 40T small chain through the reserved connection hole of the transverse clamping plate (6) to fix the middle part of the rocker arm to the transverse clamping plate (6). Utilize the horizontal support force of the transverse clamping plate (6) to prevent the rocker arm from swaying left and right; Connect the transverse clamping plate (6) and the compressive steel rod (10) through the reinforcing connecting bar (9) to form a vertical tension conduction to ensure that the binding force is transmitted to the load-bearing plate (11) through the reinforcing connecting bar (9) to avoid overloading of a single point of force. Confirm that the direction of the rocker arm pin hole is consistent with the advancing direction of the platform body (1): S31: The shovel loader lifts the platform body (1) to the installation height. During the process, observe the deformation of the compressive steel rod (10). Utilize its high-strength characteristic to bear the vertical load. Under the guidance of the ground commander, slowly move the shovel loader to initially align the rocker arm pin hole with the frame installation pin hole. At this time, the edge protection baffle (4) serves as a visual reference to assist in judging the lateral position deviation; S32: Use the lifting ring (12) at the bottom of the platform body (1) in conjunction with the hand chain hoist to make fine adjustments left and right to ensure that the center axes of the pin holes coincide; S41: Use the fork tine of the JUG-AO multi-purpose forklift to insert the bottom of the rocker arm pin shaft, use the forklift lifting function to lift the pin shaft horizontally, align it with the pin hole, and install the pin shaft; S42: After the pin is fully inserted, install the matching cover and secure it to the frame with bolts. During this process, check the swing freedom of the rocker arm to ensure there is no jamming. S5: After the pin and cover are installed, first remove the connecting chain between the horizontal clamp (6) and the rocker arm, then loosen the binding chain between the lifting ring (12) and the shovel board, ensuring that the rocker arm remains stationary during the untying process. After confirming that the rocker arm is completely fixed on the frame, the shovel board truck slowly retreats to the designated safe position. During the process, observe the contact between the load-bearing plate (11) at the bottom of the platform body (1) and the roadway bottom plate to avoid scratching: S6: Use the front thrust of the shovel truck to slowly push the coal mining machine body and the bottom chute toward the tail of the machine, align the chute interface, align the chute interface pin hole, use a special tool to drive the dumbbell pin in, ensure that the pin hole and the dumbbell pin fit tightly, and complete the chute connection: Step 7: The left rocker arm is installed: Step 8: Use the same method to install the right rocker arm and crusher.

8. The method of using the rocker arm installation platform of a shearer according to claim 7, characterized in that, In step S22, a grid structure composed of a partition support rod (14) and a partition support plate (15) is used to limit the front end of the rocker arm to prevent it from moving forward and backward during transportation.

9. The method of using the rocker arm installation platform of a shearer according to claim 7, characterized in that, In step S32, the support steel bars (8) and the top transverse support rods (13) are reinforced to form a rigid frame, which suppresses the deformation of the platform during the adjustment process and ensures the position accuracy of the rocker arm.

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