Manufacturing device for high-strength compact chain stand ring for mine

Abstract

The invention relates to a kind of mining high-strength compact chain stand ring manufacturing device.Its characteristics are: including workbench (1), static pressure mould (2) is fixedly installed on the workbench (1), pressure head (10) is provided above the static pressure mould (2) and the pressure head (10) is connected with vertical hydraulic machine drive, dynamic pressure mould (3) is also installed on the workbench (1);Wherein rectangular slot is provided in the middle of static pressure mould (2) so as to place the stand ring to be processed and rectangular hole is respectively provided on both sides of the rectangular slot, suspension support (7) is installed in the static pressure mould (2), the suspension support (7) includes several vertical connecting rods (13), the connecting rod (13) is respectively passed from the static pressure mould (2) below the aforementioned two rectangular holes.The mining high-strength compact chain stand ring manufacturing device of the invention solves the quality and production defects existing in the current domestic mining high-strength compact chain stand ring pressing.

Description

Technical Field

[0001] The invention relates to a manufacturing device for a high-strength compact chain link for mining. Background Art

[0002] High-strength compact mining chains are essential components for mechanized coal mining. They are used extensively as transmission chains for scraper conveyors and scraper transfer machines. Economic development has led to an imbalance in the mining ratio between thick and thin coal seams. Thin seams, in particular, below 1.3 meters, are often abandoned, resulting in significant resource waste. This abandonment is driven not only by economic interests but also by existing thin-seam mining technology. To avoid this resource waste, chains with structures and performance tailored to the specific conditions of thin-seam mining are needed.

[0003] Currently, the following issues are common in the manufacturing process of high-strength compact chain links for mining: Link quality: 1. Uniform and stable geometry and appearance of the manufactured links cannot be guaranteed. 2. Link dimensions are difficult to control during the manufacturing process. Link production: 1. The manufacturing process requires multiple operators, resulting in a low degree of automation and low production efficiency. 2. Frequent manual loading and unloading is labor-intensive, posing certain safety risks and low security. Summary of the Invention

[0004] The purpose of the present invention is to provide a manufacturing device for high-strength compact chain stand rings for mining, which can significantly improve the production efficiency and quality of the compact chain stand rings for mining.

[0005] A manufacturing device for high-strength and compact chain vertical rings for mining, which is special in that it includes a workbench, on which a static pressing mold is fixedly installed, a pressing head is provided above the static pressing mold and the pressing head is connected to a vertical hydraulic press in a transmission manner, and a dynamic pressing mold is also installed on the workbench; a rectangular groove is provided in the middle of the static pressing mold to place the vertical ring to be processed, and rectangular holes are provided on both sides of the rectangular groove; a suspension support is installed in the static pressing mold, and the suspension support includes a plurality of vertical connecting rods, which respectively pass through the static pressing mold below the two rectangular holes, the top ends of the connecting rods are fixedly connected to the lower connecting plate and the upper connecting plate in turn, and the bottom ends of the connecting rods are provided with limit blocks, and support springs are installed on the connecting rods between the limit blocks and the bottoms of the rectangular holes;

[0006] The dynamic pressing mold includes a base, and the base is elastically connected to the aforementioned workbench. A guide rail is installed on the base, and a core tire seat is installed on the guide rail so that it can move along the guide rail. A pressure ring core tire is fixedly installed on the core tire seat, and a C-shaped end is provided at the tail of the core tire seat. The C-shaped end is semi-openly connected to the head of the horizontal hydraulic cylinder piston rod installed on the aforementioned base, so that the head of the horizontal hydraulic cylinder piston rod can move freely in the vertical direction within the C-shaped end.

[0007] The base and the aforementioned workbench are connected in an elastic manner, specifically, at least 6 T-bolts are vertically installed in the concave groove on the workbench, and the other ends of all the T-bolts pass through the corresponding through holes on the base respectively. Support springs are installed on all the T-bolts between the base and the workbench to support the base.

[0008] The guide rail adopts a dovetail guide rail, and the bottom of the core tire seat is provided with a dovetail groove so as to be matched with the dovetail guide rail.

[0009] The pressure head consists of a main pressure head, an auxiliary pressure head and a pad. The main pressure head is located directly above the static pressing mold and is transmission-connected to the vertical hydraulic press spindle piston rod. The auxiliary pressure head is fixedly installed on the side of the main pressure head, and the pad is installed on the lower surface of the auxiliary pressure head.

[0010] The suspension support includes four connecting rods, two of which pass through the static pressing mold below one of the rectangular holes, and the other two connect rods pass through the static pressing mold below another rectangular hole.

[0011] The present invention's high-strength, compact chain link manufacturing device addresses the current quality and production deficiencies in the domestic production of high-strength, compact chain links for mining. The device and method utilize a floating core inserted into the inner width of the chain link and then pressed into shape with the mold. This significantly improves chain quality while enabling single-person operation, significantly increasing production efficiency and reducing costs. It also offers the following advantages: 1. Synchronous movement of two suspension devices replaces manual pressing, reducing the impact of human factors during the pressing process. 2. Automated loading and unloading reduces labor intensity and achieves automation.

[0012] 3. Security is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attachment Figure 1 A top view of the present invention;

[0014] Attachment Figure 2 is a side view of the present invention;

[0015] Attachment Figure 3 Schematic diagram of the structure of the static pressing die 2 in the present invention;

[0016] Attachment Figure 4 Schematic diagram of the structure of the static pressing die 2 in the present invention;

[0017] Attachment Figure 5 It is a schematic diagram of the vertical ring structure in the background technology of the present invention;

[0018] Attachment Figure 6This is a schematic diagram of a vertical ring structure pressed by the device of the present invention;

[0019] Attachment Figure 7 It is a schematic diagram of the vertical ring structure in the background technology of the present invention;

[0020] Attachment Figure 8 This is a schematic diagram of a vertical ring structure pressed using the device of the present invention. DETAILED DESCRIPTION

[0021] Example 1:

[0022] The purpose of the present invention is to provide a fully automatic manufacturing method for high-strength compact chain stand rings for mining, which can greatly improve the production efficiency and quality of the compact chain stand rings for mining.

[0023] The present invention is a high-strength compact chain ring manufacturing device for mining, comprising a workbench 1, on which a set of static pressing molds 2 are installed, and a set of dynamic pressing molds 3 are also installed on the workbench 1, wherein the workbench 1 and the dynamic pressing mold 3 are connected by 6 T-bolts 23 and 6 support springs 8. This structure can realize the reciprocating motion of the dynamic pressing mold 3 in the vertical direction relative to the workbench 1; wherein a suspension support 7 is installed in the static pressing mold 2, and the suspension support 7 is composed of a connecting rod 13 passing through four rectangular holes inside the pressure ring seat 16, and connecting the upper connecting plate 11 and the lower connecting plate 12, so that the entire support moves synchronously when subjected to force; wherein the upper connecting plate 11 and the lower connecting plate 12 are vertically distributed in space, and the four support springs 8 are respectively installed in the four slots inside the pressure ring seat 16, and the slots are concentric with the four rectangular holes, so that the entire support can move vertically back and forth in the static pressing mold 2.

[0024] The dynamic pressing mold 3 includes a dynamic pressing mold base 5, on which a dovetail guide rail 14 is installed, and the dovetail guide rail 14 is connected to the dovetail groove at the bottom of the core tire seat 4. The pressure ring core tire 6 is installed on the core tire seat 4, and the C-shaped tail of the core tire seat 4 is semi-openly connected to the piston rod of the horizontal hydraulic cylinder 24. This structure can realize the horizontal reciprocating motion of the pressure ring core tire 6; the pressure head 10 includes a main pressure head 21, an auxiliary pressure head 20, and a cushion block 22. The main pressure head 21 is located directly above the static pressing mold 2 and is connected to the vertical hydraulic press main shaft piston rod. The auxiliary pressure head 20 is installed on the side of the main pressure head 21, and the cushion block 22 is connected to the lower surface of the auxiliary pressure head 20. This structure can realize the reciprocating motion of the pressure head 10 in the vertical direction and provide auxiliary force for the pressure ring core tire 6.

[0025] The T-bolt 23 is installed in the concave groove of the workbench 1 and connected to the hole on the base 5. The support spring 8 is located between the workbench 1 and the base 5 and is sleeved on the T-bolt 23. Two parallel dovetail guide rails 14 are installed on the base 5. The dovetail groove at the bottom of the core tire seat 4 is connected with the dovetail guide rail 14. The tail of the core tire seat 4 is semi-openly connected to the piston rod of the horizontal hydraulic cylinder 24. The core tire seat 4 is connected to the pressure ring core tire 6 as a whole.

[0026] The pressure ring seat 16 is installed in the rectangular groove of the workbench 1, the slotted limit block 18 and the limit block 17 are respectively installed on both sides of the pressure ring seat 16, and the two arc tops 19 are respectively installed on the two short sides of the rectangular groove inside the pressure ring seat 16; the two upper connecting plates 11 are parallel to each other and the long sides are parallel to the long sides of the pressure ring seat 16, and the two lower connecting plates 12 are parallel to each other and the long sides are parallel to the short sides of the pressure ring seat 16.

[0027] A rectangular hole is opened on the long side of the static pressing mold 2, and a rectangular groove is arranged inside the geometric center of the static pressing mold 2. When the chain link to be pressed is placed in the rectangular groove, the core tire seat 4 drives the pressure ring core tire 6 to move horizontally through the rectangular hole on the long side of the static pressing mold 2, and puts the chain link in the rectangular groove on the middle part of the pressure ring core tire 6.

[0028] The working characteristics of the device of the present invention are as follows:

[0029] When the pressing ring core 6 drives the core seat 4 to move vertically downward, the piston rod of the horizontal hydraulic cylinder 24 is not subjected to radial force. The upper connecting plate 11 and the lower connecting plate 12 are connected into a whole by the connecting rod 13. The two upper connecting plates 11 bear the pressure of the head and tail of the pressing ring core 6 respectively, balancing the force on the pressing ring core 6 during the pressing process and always keeping the pressing ring core 6 in a horizontal state during the pressing process.

[0030] When the chain link is forced to move downward, the pressing ring core 6 moves downward and drives the upper connecting plate 11 to move downward, thereby causing the entire suspension support 7 to move downward. When the pressing ring core 6 moves backward under the movement of the piston rod, the pressed chain link automatically falls off from the pressing ring core 6 due to the obstruction of the inner wall of the rectangular groove of the static pressing mold 2.

[0031] The main ram 21 acts on the center of the static pressing die 2 and squeezes the chain link when moving downward. The auxiliary ram 20 provides auxiliary pressure and acts on the pressing ring core 6. When the ram 10 is lifted, the elastic force of the support spring 8 returns the suspension support 7 and the dynamic pressing die 3 to their initial height.

[0032] Example 2:

[0033] like Figure 1 、 2As shown in Figures 3 and 4, the present invention is a high-strength compact chain ring manufacturing device for mining, including a dynamic pressing mold 3, which includes a core tire seat 4. The tail of the core tire seat 4 is semi-openly connected to the piston rod of the horizontal hydraulic cylinder 24, and the pressing ring core tire 6 is inserted into the rectangular hole of the static pressing mold 2 through the horizontal movement of the piston rod of the horizontal hydraulic cylinder 24; wherein the T-bolt 23 is installed in the concave groove of the workbench 1 and is connected to the base 5, and six supporting springs 8 are installed between the workbench 1 and the base 5, so that the entire dynamic pressing mold 3 is suspended on the workbench 1.

[0034] A pressure head 10 is installed above the static pressing mold 2, and a suspended support 7 is installed in the internal cavity of the static pressing mold 2. When the pressure ring core 6 is inserted into the rectangular hole of the static pressing mold 2, the chain ring is sleeved on the middle part of the pressure ring core 6, and the head and tail of the pressure ring core 6 are supported on the upper surface of the upper connecting plate 11. When the pressure head 10 is pressed down and squeezes the chain ring in the vertical direction, the chain ring drives the pressure ring core 6 to move downward. At the same time, the pressure ring core 6 drives the suspended support 7 and the dynamic pressing mold 3 to move downward as a whole, so that the chain ring is always horizontally passed through the chain ring during the pressing process.

[0035] As the ram 10 is lifted upward, the suspension support 7 and the dynamic pressing jig 3 simultaneously return upward under the elastic force of the support spring 8. The piston rod of the horizontal hydraulic cylinder 24 pulls the core holder 4 back to its initial position, and the pressing ring core 6 is withdrawn from the rectangular through-hole of the static pressing die 2. Due to the obstruction of the inner wall of the rectangular groove of the static pressing die 2, the chain link automatically falls off the pressing ring core 6. This design aims to achieve automatic reset of the tooling and automatic loading and unloading of the chain link within a single cycle, enabling single-person operation, significantly improving production efficiency and reducing labor intensity.

[0036] The ram 10 is connected to the end of the spindle piston rod of the vertical hydraulic press, enabling vertical reciprocating motion of the ram 10. The core holder 4 is semi-openly connected to the piston rod of the horizontal hydraulic cylinder 24, enabling horizontal reciprocating motion of the core holder 4. The support spring 8 enables the suspended support 7 and the dynamic pressing jig 3 to be retracted to their initial positions after pressing. This design allows the chain link and the pressing jig to move as a whole during the pressing process, replacing traditional manual pressing. This solves the problem of chain link straight edge bending after pressing, improves the chain link straight edge strength and service life, and effectively ensures the size and inner and outer arc shapes of the vertical ring mechanism after pressing.

[0037] A cooling water nozzle is provided outside the dynamic pressing mold 3, and the nozzle is connected to a cooling water pipe. When the nozzle returns to the initial position, cooling water is passed to cool the pressing ring core tire 6. The advantages of this design are simple structure, local cooling of high temperature areas, and prevention of cooling water spraying onto the chain ring after pressing.

[0038] The method of using the device of the present invention is:

[0039] The rod is welded into a single ring, and the chain ring with residual heat is placed in the static pressing mold 2. Under the action of the piston rod of the horizontal hydraulic cylinder 24, the pressure ring core 6 in the dynamic pressing mold 3 is inserted into the chain ring. The vertical hydraulic press piston rod drives the ram 10 to move vertically downward, pressing the chain ring, dynamic pressing mold 3, and suspended support 7 downward at the same time. When the ram 10 contacts the limit, the movement stops, and the chain ring is kept under pressure for 2s between the static pressing mold 2 and the pressure ring core 6 to complete the vertical ring pressing. Finally, the ram 10 returns to the initial position, the pressure ring core 6 and the suspended support 7 are automatically reset, and the piston rod of the horizontal hydraulic cylinder 24 returns to the initial position. The rectangular groove structure inside the static pressing mold 2 realizes automatic unloading.

[0040] The high-strength compact chain link for mining manufactured by the present invention has the following structural features:

[0041] The straight edge of the vertical ring after pressing is regular in shape, and the straight edge of the chain link has no bends (such as Figure 6 Middle part A), can effectively improve the straight edge strength of the chain. After pressing, the outer arc part of the vertical ring has a regular shape, and the top of the arc has no flat surface that is squeezed with the mold (such as Figure 8 Middle part B), can effectively improve the service life of the chain. After pressing, the inner arc part of the vertical ring is regular in shape, and there is no elliptical arc formed by the die extrusion at the top 19 of the inner arc (such as Figure 8 The middle part C) can effectively ensure good contact with the arc of the compact chain flat link, reduce wear at the intersection of the arcs during use, and increase the service life of the chain.

[0042]

[0043] The above table shows the relevant data of the vertical links of the high-strength compact chain for mining manufactured by the device of the present invention. The implementation standard of the high-strength compact chain for mining is MT / T929-2004.

Claims

1. A manufacturing device for high-strength compact chain links for mining, characterized by: The invention comprises a workbench (1), on which a ring pressing seat (16) is fixedly mounted, a pressing head (10) is provided above the ring pressing seat (16), and the pressing head (10) is connected to a vertical hydraulic press by transmission, and a dynamic pressing mold (3) is also installed on the workbench (1); wherein a rectangular groove is provided in the middle of the ring pressing seat (16) so as to place the vertical ring to be processed, and rectangular holes are provided on both sides of the rectangular groove, and a suspension support (7) is installed in the ring pressing seat (16), and the suspension support (7) includes a plurality of vertical connecting rods (13), and the connecting rods (13) are all The top ends of the connecting rods (13) are fixedly connected to the lower connecting plate (12) and the upper connecting plate (11) in sequence, wherein the pressing ring seat (16) is installed in the rectangular groove of the workbench (1), and the slotted limit block (18) and the limit block (17) are installed on both sides of the pressing ring seat (16); the connecting rod (13) passes through the four rectangular holes inside the pressing ring seat (16), and the four support springs (8) are installed in the four slots inside the pressing ring seat (16), and the slots are concentric with the four rectangular holes. The dynamic pressing mold (3) includes a base (5), and the base (5) is elastically connected to the aforementioned workbench (1), a guide rail is installed on the base (5), a core tire seat (4) is installed on the guide rail so that it can move along the guide rail, a pressure ring core tire (6) is fixedly installed on the core tire seat (4), and a C-shaped end is provided at the tail of the core tire seat (4), and the C-shaped end is semi-openly connected to the piston rod head of the horizontal hydraulic cylinder (24) installed on the aforementioned base (5), so that the piston rod head of the horizontal hydraulic cylinder (24) can move freely in the vertical direction within the C-shaped end; The base (5) and the workbench (1) are connected in an elastic manner, specifically, at least six T-bolts (23) are vertically installed in the concave groove on the workbench (1), and the other ends of all the T-bolts (23) pass through the corresponding through holes on the base (5). Support springs (8) are installed on all the T-bolts (23) between the base (5) and the workbench (1), so as to support the base (5); The pressure head (10) is composed of a main pressure head (21), an auxiliary pressure head (20) and a pad (22); The main pressure head (21) is located directly above the pressure ring seat (16), and the main pressure head (21) is connected to the vertical hydraulic press main shaft piston rod in a transmission manner. The auxiliary pressure head (20) is fixedly mounted on the side of the main pressure head (21), and the pad (22) is mounted on the lower surface of the auxiliary pressure head (20).

2. The manufacturing device for high-strength compact chain link for mining according to claim 1, characterized in that: The guide rail adopts a dovetail guide rail (14), and the bottom of the core tire seat (4) is provided with a dovetail groove so as to be matched and connected with the dovetail guide rail (14).

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