Front arm device of KR crawler loader

Abstract

The utility model discloses a front arm device of a KR crawler loader, and relates to the technical field of crawler loaders. The tail end of the large arm is provided with a connecting flange, the center of the connecting flange is fixedly provided with a cylinder in a penetrating manner, the top of the front end of the large arm is provided with a group of first pin shaft edges, the two sides of the front end of the large arm are fixedly provided with V-shaped pin shaft edges, the small arm is arranged on the outer side of the front end of the large arm, and an obtuse angle is formed between the small arm and the large arm; and the small arm is arranged between the two V-shaped pin shaft edges in parallel. The front arm is divided into the large arm and the small arm, meanwhile, through the design of the connecting mechanism between the large arm and the small arm, original overall connection at the inflection point of the front arm is replaced by a pin shaft connecting mechanism, a pin rod is adopted for bearing the borne impact load, and the strength and stability of the front arm are improved; the problem that the turning point of the front arm of the crawler loader is prone to deformation and fracture is effectively solved, replacement is convenient, and replacement maneuverability and flexibility are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of muck loaders, and in particular relates to a front arm device for a KR muck loader. Background Technology

[0002] As an important component of the molten iron pretreatment process, the slag remover plays an increasingly important role in the production of high-quality steel. Its main function is to remove slag from molten iron after desulfurization, dephosphorization, and desiphorization, as well as blast furnace slag, thereby improving the cleanliness of the molten iron and achieving a low-slag or slag-free state, thus improving the quality of the main raw materials for steelmaking in the converter steelmaking process.

[0003] However, due to improper operation by the operator, the slag removal forearm hits the inner wall of the molten iron ladle (the container holding molten iron) at high speed, which causes severe bending deformation or even breakage of the forearm, thereby increasing the maintenance frequency of the forearm. Secondly, since the top of the forearm is in contact with the high-temperature molten iron, the working environment is very harsh. Sometimes it is necessary to break the "hardened" slag on the top of the forearm, making the stress conditions of the forearm very demanding. Summary of the Invention

[0004] The purpose of this utility model is to provide a forearm device for a KR muck loader. By dividing the forearm into a large arm and a small arm, and designing a connecting mechanism between the large arm and the small arm, the original integral connection at the forearm inflection point is replaced with a pin-shaft connection mechanism. The pins bear the impact load, which improves the strength and stability of the forearm, effectively solves the problem of easy deformation and breakage at the inflection point of the muck loader forearm, and has the feature of easy replacement, improving the mobility and flexibility of replacement.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a front arm device for a KR muck loader, including a boom, a forearm and a connecting mechanism;

[0007] The boom tail end is provided with a connecting flange, and a cylinder is fixed through the center of the connecting flange. The top of the boom front end is provided with a set of first pin edges, and V-shaped pin edges are fixed on both sides of the boom front end.

[0008] The forearm is located on the outer side of the front end of the upper arm and forms an obtuse angle with the upper arm. The forearm is parallel to the two V-shaped pin sides. The two tail ends of the forearm are fixed with second pin sides, and the two second pin sides are respectively flush with the two first pin sides.

[0009] The first pin has a first hole in the middle, the second pin has a second hole at the tail end, and the forearm tail end, the V-shaped pin front end, and the second pin front end have concentric third holes.

[0010] The connecting mechanism includes a first pin, a second pin, a third pin, and a set of connecting plates;

[0011] The connecting plate has a fourth hole at both ends, and the connecting plate is located inside the first pin side and the second pin side on the same side.

[0012] The first pin passes through the first hole on the two first pin shaft sides and the fourth hole at the tail end of the two connecting plates. The second pin passes through the second hole on the two second pin shaft sides and the fourth hole at the front end of the two connecting plates. The third pin passes through the third hole on the two V-shaped pin shaft sides, the two second pin shaft sides, and the forearm.

[0013] The forearm has a scraper mounting position parallel to the upper arm at its front end, and a scraper groove is fixed on the bottom surface of the scraper mounting position.

[0014] Furthermore, both the upper arm and the forearm are square tube structures, and ribs are provided along the length direction on all four sides of the upper arm and the forearm.

[0015] Furthermore, the cross-section of the scraper groove is an inverted U-shaped structure, and both sides of the scraper groove are provided with mounting openings that are misaligned with the forearm.

[0016] Furthermore, an upper clearance area is provided at the top of the front end of the upper arm, and the first pin shaft edge is located in the upper clearance area.

[0017] Furthermore, the ribs on both sides of the front end of the upper arm are provided with side clearance areas, and the tail end of the V-shaped pin is located in the side clearance area.

[0018] Furthermore, both sides of the forearm tail end are provided with a lower clearance area, and the front end of the V-shaped pin is located in the lower clearance area.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model divides the forearm into a large arm and a small arm, and the connection mechanism between the large arm and the small arm replaces the original integral connection at the forearm inflection point with a pin connection mechanism. The pin bears the impact load, which improves the strength and stability of the forearm and effectively solves the problem of easy deformation and breakage at the inflection point of the slag remover. It also has the feature of easy replacement, which improves the mobility and flexibility of replacement. While improving service life and slag removal efficiency, it reduces the amount of slag generated in the subsequent converter process.

[0021] 2. The design of the scraper groove in this utility model can be used for the installation and positioning of the scraper, and at the same time facilitates the partial replacement of the scraper, which makes operation convenient and reduces maintenance costs.

[0022] 3. By setting a protruding cylinder at the connecting flange, this utility model can reduce the shear stress on the flange, effectively solve the problem of easy bending and breakage at the flange of the slag remover, and improve the connection strength.

[0023] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the forearm device of a KR muck loader according to the present invention;

[0026] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 This is a structural diagram of the end of the boom near the connecting flange.

[0028] Figure 4 This is a sectional view of the structure at the location of the scraper groove;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1-Upright arm, 2-Left arm, 3-First pin, 4-Second pin, 5-Third pin, 6-Connecting plate, 7-Scraper groove, 101-Connecting flange, 102-Cylinder, 103-First pin side, 104-V-shaped pin side, 105-First hole, 106-Rib, 107-Upper clearance area, 108-Side clearance area, 201-Second pin side, 202-Second hole, 203-Third hole, 204-Scraper mounting position, 205-Lower clearance area, 601-Fourth hole, 701-Mounting port. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-4As shown, this utility model is a KR muck loader front arm device, including a boom 1, a forearm 2 and a connecting mechanism;

[0033] The tail end of the boom 1 is provided with a connecting flange 101, and a cylinder 102 is fixed through the center of the connecting flange 101. The top of the front end of the boom 1 is provided with a set of first pin edges 103, and V-shaped pin edges 104 are fixed on both sides of the front end of the boom 1.

[0034] Forearm 2 is located on the outer front end of upper arm 1 and forms an obtuse angle with upper arm 1. Forearm 2 is parallel to the two V-shaped pin edges 104. The two ends of forearm 2 are fixed with second pin edges 201. The two second pin edges 201 are flush with the two first pin edges 103 respectively.

[0035] The first pin side 103 has a first hole 105 in the middle, the second pin side 201 has a second hole 202 at the tail end, and the forearm 2 has a third hole 203 at the tail end, the front end of the V-shaped pin side 104, and the front end of the second pin side 201.

[0036] The connecting mechanism includes a first pin 3, a second pin 4, a third pin 5, and a set of connecting plates 6;

[0037] The connecting plate 6 has a fourth hole 601 at both ends, and the connecting plate 6 is located inside the first pin side 103 and the second pin side 201 on the same side.

[0038] The first pin 3 is inserted through the first hole 105 of the two first pin shaft sides 103 and the fourth hole 601 at the tail end of the two connecting plates 6. The second pin 4 is inserted through the second hole 202 of the two second pin shaft sides 201 and the fourth hole 601 at the front end of the two connecting plates 6. The third pin 5 is inserted through the third hole 203 of the two V-shaped pin shaft sides 104, the two second pin shaft sides 201 and the forearm 2.

[0039] The forearm 2 has a scraper mounting position 204 parallel to the upper arm 1 at its front end, and a scraper groove 7 is fixed on the bottom surface of the scraper mounting position 204.

[0040] Among them, such as Figure 1-3 As shown, both the upper arm 1 and the lower arm 2 are square tube structures, and ribs 106 are provided along the length direction on all four sides of the upper arm 1 and the lower arm 2.

[0041] Among them, such as Figure 4 As shown, the cross-section of the scraper groove 7 is an inverted U-shaped structure, and both sides of the scraper groove 7 are provided with mounting ports 701 that are misaligned with the forearm 2.

[0042] Among them, such as Figure 1-2 As shown, an upper clearance area 107 is provided at the rib 106 at the top of the front end of the upper arm 1, and the first pin side 103 is provided at the upper clearance area 107.

[0043] Among them, such as Figure 1-2 As shown, the ribs 106 on both sides of the front end of the upper arm 1 are provided with side clearance areas 108, and the tail end of the V-shaped pin side 104 is located at the side clearance area 108.

[0044] Among them, such as Figure 1-2 As shown, both sides of the forearm 2 have a lower clearance area 205, and the front end of the V-shaped pin side 104 is located at the lower clearance area 205.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A KR muck loader boom device, characterized in that: It includes a large arm (1), a small arm (2), and a connecting mechanism; The boom (1) is provided with a connecting flange (101) at the tail end. A cylinder (102) is fixed through the center of the connecting flange (101). A set of first pin edges (103) is provided at the top of the front end of the boom (1). V-shaped pin edges (104) are fixed on both sides of the front end of the boom (1). The forearm (2) is located on the outer side of the front end of the upper arm (1) and forms an obtuse angle with the upper arm (1). The forearm (2) is arranged parallel between the two V-shaped pin sides (104). The two ends of the forearm (2) are fixed with second pin sides (201). The two second pin sides (201) are flush with the two first pin sides (103). The first pin side (103) is provided with a first hole (105) in the middle, the second pin side (201) is provided with a second hole (202) at the tail end, and the forearm (2) tail end, the V-shaped pin side (104) front end and the second pin side (201) front end are provided with concentric third holes (203). The connecting mechanism includes a first pin (3), a second pin (4), a third pin (5), and a set of connecting plates (6); The connecting plate (6) has a fourth hole (601) at both ends, and the connecting plate (6) is located inside the first pin side (103) and the second pin side (201) on the same side; The first pin (3) is inserted through the first hole (105) of the two first pin shaft sides (103) and the fourth hole (601) at the tail end of the two connecting plates (6). The second pin (4) is inserted through the second hole (202) of the two second pin shaft sides (201) and the fourth hole (601) at the front end of the two connecting plates (6). The third pin (5) is inserted through the third hole (203) at the two V-shaped pin shaft sides (104), the two second pin shaft sides (201) and the forearm (2). The forearm (2) has a scraper mounting position (204) parallel to the upper arm (1) at its front end, and a scraper groove (7) is fixed on the bottom surface of the scraper mounting position (204).

2. The KR muck loader boom device according to claim 1, characterized in that, Both the upper arm (1) and the lower arm (2) are square tube structures, and ribs (106) are provided along the length direction on the four sides of the upper arm (1) and the lower arm (2).

3. The KR muck loader forearm device according to claim 1, characterized in that, The cross-section of the scraper groove (7) is an inverted U-shaped structure, and both sides of the scraper groove (7) are provided with mounting openings (701) that are misaligned with the forearm (2).

4. The KR muck loader forearm device according to claim 1, characterized in that, The upper relief area (107) is provided at the rib (106) at the top front end of the upper arm (1), and the first pin edge (103) is located at the upper relief area (107).

5. The KR muck loader forearm device according to claim 1, characterized in that, The upper arm (1) has side clearance areas (108) on both sides of the front end of the ribs (106), and the tail end of the V-shaped pin (104) is located in the side clearance area (108).

6. The KR muck loader forearm device according to claim 1, characterized in that, The forearm (2) has a lower clearance area (205) on both sides of the tail end, and the front end of the V-shaped pin (104) is located in the lower clearance area (205).

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