Boom and drill jumbo

Abstract

The utility model discloses an arm support and a drill jumbo. The arm support comprises a base, an arm body, a pitching drive and a side-sway drive. The first end of the arm body is connected to the base, and the arm body has a pitch stroke and a side-sway stroke on the base; the first end of the pitching drive is connected to the base, and the second end of the pitching drive is hinged to the arm body through a first hinge point; the first end of the side-sway drive is connected to the base, and the second end of the side-sway drive is hinged to the arm body through a second hinge point; the first hinge point and the second hinge point are both located at the bottom of the arm body. The cantilever crane is applied to the field of rock drilling equipment, the working range of the cantilever crane can be effectively enlarged, and the overall size of the trolley is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drilling equipment, in particular to a boom and a rock drilling trolley. Background Art

[0002] A drilling rig is a walking drilling machine that supports a rock drill for mechanized rock drilling operations. It is widely used in open-pit mining, tunneling, chamber excavation, railways, hydropower and other stone projects. In order to improve construction efficiency, it is common to configure a pair of cylinders on the boom of the drilling rig to simultaneously control the pitch and sway to adjust the working range of the boom.

[0003] In traditional designs, the hinge points of the two cylinders on the boom are usually located on the side of the boom. To complete a side swing action, one cylinder needs to be controlled to extend and the other needs to retract. To complete a pitch action, the two cylinders need to be controlled to extend and retract synchronously. This requires precise control and places extremely high demands on the operators. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a boom and a rock drilling trolley, which can effectively improve the linkage of the pitch cylinder and the side swing cylinder, are more conducive to control, and reduce the requirements for operators.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a boom, including a base, an arm body, a pitch drive and a lateral swing drive;

[0006] The first end of the arm body is connected to the base, and the arm body has a pitch and roll stroke on the base;

[0007] The first end of the pitch drive is connected to the base, and the second end is hinged to the arm body through a first hinge point;

[0008] The first end of the side swing drive is connected to the base, and the second end is hinged to the arm body through a second hinge point;

[0009] The first hinge point and the second hinge point are both located at the bottom of the arm body.

[0010] In one embodiment, the first hinge point and the second hinge point are concentric and collinear.

[0011] In one embodiment, a connecting plate is fixedly connected to the bottom of the arm body;

[0012] A pitch hinged ear plate is provided at the bottom of the connecting plate, and a first hinge hole is provided on the pitch hinged ear plate;

[0013] A side-swing hinged ear plate is provided at the bottom of the connecting plate, and a second hinged hole is provided on the side-swing hinged ear plate.

[0014] In one embodiment, the top of the connecting plate is connected to the side of the arm body through a reinforcing rib plate.

[0015] In one embodiment, the reinforcing rib plate is a tapered curved plate structure that is narrow at the top and wide at the bottom, with a first opening at the wider end and a second opening at the side;

[0016] The edge of the first opening is connected to the connecting plate, and the edge of the second opening is connected to the side of the arm body.

[0017] In one embodiment, the number of the reinforcing rib plate is one, and the reinforcing rib plate is arranged on one side of the top of the connecting plate corresponding to the side swing hinged ear plate; or

[0018] The number of the reinforcing rib plates is more than two, and each of the reinforcing rib plates is arranged on one side of the top of the connecting plate corresponding to the side swing hinged ear plate, and is spaced apart along the width direction of the connecting plate; or

[0019] There are multiple reinforcing rib plates, and both sides of the top of the connecting plate are provided with the reinforcing rib plates.

[0020] In one of the embodiments, the partial contour edges of the connecting plate located on both sides of the pitch hinged ear plate in the length direction are convex arc structures.

[0021] In one embodiment, a first swing support is rotatably connected to the base, and a rotation axis of the first swing support on the base is perpendicular to a height direction of the base;

[0022] The first end of the arm body is hinged to the first swing support through a third hinge point, the first end of the pitch drive is hinged to the first swing support through a fourth hinge point, and the fourth hinge point is located below the third hinge point.

[0023] In one embodiment, a second swing support is rotatably connected to the base, and a rotation axis of the second swing support on the base is perpendicular to a height direction of the base;

[0024] The first end of the side swing drive is hinged to the second swing support via a fifth hinge point.

[0025] In order to achieve the above-mentioned purpose, the utility model also provides a rock drilling trolley, and the rock drilling trolley is provided with the above-mentioned boom.

[0026] Compared with the prior art, the utility model has the following beneficial technical effects:

[0027] 1. The utility model sets the hinge point of the side swing drive and the hinge point of the pitch drive on the boom at the bottom of the boom, and sets the first hinge point and the second hinge point concentrically and collinearly, so that the side swing drive and the pitch drive have strong linkage, and the movement is smoother and the angle control is more precise during the side swing and pitch movements;

[0028] 2. The utility model can reduce the overall size of the trolley to a certain extent by arranging the pitch drive below the arm body and reducing one side swing drive.

[0029] 3. The utility model sets the hinge point of the side swing drive and the hinge point of the pitch drive on the boom at the bottom of the boom, and only needs to process one hinge seat, and the first hinge point and the second hinge point are set concentrically and collinearly, so that the processing is more convenient and the processing accuracy is higher.

[0030] 4. In the preferred embodiment of the utility model, the connecting plate is used as the connection transfer between the pitch articulated ear plate, the side swing articulated ear plate and the arm body, so as to avoid direct welding between the pitch articulated ear plate, the side swing articulated ear plate and the arm body, and there is no need to worry about bending the arm body during welding, which can effectively avoid the problem of false welding or weak welding caused by too small arm body plate thickness and too thin welding angle;

[0031] 5. In the preferred embodiment of the utility model, a reinforcing rib plate which is narrow at the top and wide at the bottom can be added on the top of the connecting plate to connect the side of the arm body. This can not only effectively improve the connection strength between the hinge seat and the arm body, but also the reinforcing rib plate which is narrow at the top and wide at the bottom can well release the lateral stress of the arm body, thereby avoiding stress concentration and reducing the overall strength of the arm body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 It is a first axonometric view of the arm in Example 1 of the utility model;

[0034] Figure 2 It is a second axonometric view of the arm in Example 1 of the utility model;

[0035] Figure 3 It is the third axonometric view of the arm in Embodiment 1 of the utility model;

[0036] Figure 4 This is a first partial schematic diagram of the base in Example 1 of the utility model;

[0037] Figure 5 This is a second partial schematic diagram of the base in Example 1 of the utility model.

[0038] Figure numbers: base 1, arm body 2, pitch drive 3, side swing drive 4, first hinge point 5, second hinge point 6, connecting plate 7, pitch articulated ear plate 8, side swing articulated ear plate 9, first rib plate 10, second rib plate 11, reinforcing rib plate 12, first swing bearing 13, second swing bearing 14, third hinge point 15, fourth hinge point 16, fifth hinge point 17, drill arm reinforcement plate 18, first ear plate 19, second ear plate 20, sixth hinge point 21, seventh hinge point 22.

[0039] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] like Figures 1 to 5 The figure shows a boom disclosed in the present embodiment, which mainly includes a base 1, an arm body 2, a pitch drive 3 and a roll drive 4. Among them, the first end of the arm body 2 is connected to the base 1, and the second end is connected to the operating unit, and the arm body 2 has a pitch and roll stroke on the base 1. The first end of the pitch drive 3 is connected to the base 1, and the second end is hinged to the arm body 2 through the first hinge 5, so as to drive the arm body 2 to perform a pitch movement on the base 1. The first end of the roll drive 4 is connected to the base 1, and the second end is hinged to the arm body 2 through the second hinge 6, so as to drive the arm body 2 to perform a roll movement on the base 1. Among them, the first hinge 5 and the second hinge 6 are both located at the bottom of the arm body 2, so that the roll drive 4 and the pitch drive 3 have strong linkage, and the movement is smoother and the angle control is more precise when performing roll and pitch movements.

[0046] In this embodiment, a connecting plate 7 is fixedly welded to the bottom of the arm body 2, a pitch articulated lug plate 8 is welded to the bottom of the connecting plate 7, and the pitch articulated lug plate 8 has a first articulated hole, and the first end of the pitch drive 3 is hinged to the first articulated hole of the pitch articulated lug plate 8 through a pin, that is, the first articulated hole cooperates with the pin to form a first hinge point 5. A side swing articulated lug plate 9 is also welded to the bottom of the connecting plate 7, and the side swing articulated lug plate 9 has a second articulated hole, and the first end of the side swing drive 4 is hinged to the second articulated hole of the side swing articulated lug plate 9 through a pin, that is, the second articulated hole cooperates with the pin to form a second articulated point 6. By using the connecting plate 7 as a connecting transit between the pitch articulated lug plate 8, the side swing articulated lug plate 9 and the arm body 2, the pitch articulated lug plate 8, the side swing articulated lug plate 9 and the arm body 2 are prevented from being directly welded, so there is no need to worry about the arm body 2 being bent by welding, and the problem of false welding or weak welding caused by too small plate thickness of the arm body 2 and too thin welding angle is effectively avoided.

[0047] Specifically in this embodiment, the pitch articulated ear plate 8 and the side swing articulated ear plate 9 are both perpendicular to the connecting plate 7, and the pitch articulated ear plate 8 and the side swing articulated ear plate 9 are parallel to the length direction of the arm body 2. By arranging the pitch articulated ear plate 8 and the side swing articulated ear plate 9 in parallel and perpendicular to the connecting plate 7, loads and stresses from different directions can be effectively dispersed and transmitted, thereby effectively improving the stability and durability of the entire structure and reducing the risk of fatigue or damage caused by stress concentration.

[0048] It is worth noting that in the specific application process, the pitch articulated ear plate 8 and the roll articulated ear plate 9 can also be set to be non-parallel. For example, the pitch articulated ear plate 8 is set to be parallel to the length direction of the arm body 2, and the roll articulated ear plate 9 is set to be perpendicular to the length direction of the arm body 2. At this time, the pitch articulated ear plate 8 is directly articulated to the pitch drive 3 of the arm body 2, and the roll articulated ear plate 9 is articulated to the roll drive 4 of the arm body 2 through a universal joint structure.

[0049] As a preferred embodiment, the first hinge point 5 and the second hinge point 6 are concentric and collinear, that is, the first hinge hole and the second hinge hole are coaxially arranged, so that not only the pitch and swing angles of the boom can be accurately controlled, but also the first hinge hole and the second hinge hole can be processed and formed by boring with one tool, which has a simple process, convenient machining, and can also ensure high processing accuracy.

[0050] In the present embodiment, the number of the pitch articulated ear plates 8 and the side-swing articulated ear plates 9 are both two, the two pitch articulated ear plates 8 are arranged in parallel and spaced apart on the first side of the bottom of the connecting plate 7, the two side-swing articulated ear plates 9 are arranged in parallel and spaced apart on the second side of the bottom of the connecting plate 7, and a first rib plate 10 is connected between the two pitch articulated ear plates 8, and a second rib plate 11 is connected between the two side-swing articulated ear plates 9, thereby effectively enhancing the overall structural stability of the boom.

[0051] In this embodiment, a reinforcing rib plate 12 that can be connected to the side of the arm body 2 is welded to the top of the connecting plate 7. The reinforcing rib plate 12 is a tapered curved plate structure that is narrow at the top and wide at the bottom. The wider end of the reinforcing rib plate 12 has a first opening and the side has a second opening. The edge of the first opening is connected to the connecting plate 7, and the edge of the second opening is connected to the side of the arm body 2. In the reinforcing rib plate 12, the stress of the narrower part on the top is relatively concentrated, and the wider part on the bottom allows the stress to be relatively dispersed, and the stress is released from the narrow part to the wide part, thereby effectively avoiding stress concentration.

[0052] Since in the specific implementation process, the pitch drive 3 is mostly located directly below the arm body 2, and the roll drive 4 is mostly located on the side of the arm body 2, when the connecting plate 7 is connected to the arm body 2 in this embodiment, one side of the connecting plate 7 corresponding to the roll hinged ear plate 9 usually extends out of the side of the arm body 2. In order to enhance the stability of the connection between the connecting plate 7 and the arm body 2, the layout structure of the reinforcing rib plate 12 in this embodiment specifically has the following implementation modes:

[0053] In the first embodiment, one side of the connecting plate 7 corresponding to the side swing hinge ear plate 9 extends out of the side of the arm body 2. At this time, the number of the reinforcing rib plate 12 is one, and the reinforcing rib plate 12 is arranged on the side of the top of the connecting plate 7 corresponding to the side swing hinge ear plate 9.

[0054] In the second embodiment, one side of the connecting plate 7 corresponding to the side swing hinge ear plate 9 extends out of the side of the arm body 2. At this time, the number of reinforcing ribs 12 is more than two, and each reinforcing rib 12 is arranged on one side of the top of the connecting plate 7 corresponding to the side swing hinge ear plate 9, and each reinforcing rib 12 is spaced apart along the width direction of the connecting plate 7, wherein the width direction of the connecting plate 7 is the length direction of the arm body 2.

[0055] In the third embodiment, both sides of the connecting plate 7 extend out of the side of the arm body 2. At this time, the number of reinforcing ribs 12 is multiple, and both sides of the top of the connecting plate 7 have reinforcing ribs 12, that is, the connecting plate 7 and the reinforcing ribs 12 are a concave structure as a whole, and the arm body 2 is connected in the groove of the concave structure.

[0056] As a preferred embodiment, part of the contour edges on the connecting plate 7 on both sides of the length direction of the pitch articulated ear plate 8 are convex arc structures. Since the area on the connecting plate 7 corresponding to the pitch articulated ear plate 8 is located as a whole below the arm body 2, the edge contour of the corresponding position is set to a convex arc structure, and the convex direction is the same as the length direction of the arm body 2. Therefore, the stress can be effectively released, thereby effectively avoiding stress concentration.

[0057] In this embodiment, the base 1 is rotatably connected with a first swing support 13 and a second swing support 14, and the rotation axes of the first swing support 13 and the second swing support 14 on the base 1 are parallel to the height direction of the base 1. The first end of the arm body 2 is hinged to the first swing support 13 through a third hinge point 15, the first end of the pitch drive 3 is hinged to the first swing support 13 through a fourth hinge point 16, and the fourth hinge point 16 is located below the third hinge point 15, and the first end of the roll drive 4 is hinged to the second swing support 14 through a fifth hinge point 17.

[0058] In the specific implementation process, the base 1 is provided with a drill arm reinforcement plate 18, a first ear plate 19 and a second ear plate 20, and the drill arm reinforcement plate 18 is provided with a third hinge hole and a fourth hinge hole at intervals along the width direction of the base 1. The first ear plate 19 is arranged in parallel below the drill arm reinforcement plate 18, and the first ear plate 19 has a fifth hinge hole coaxial with the third hinge hole. The second ear plate 20 is arranged in parallel below the drill arm reinforcement plate 18 and is higher than the second ear plate 20, and the second ear plate 20 has a sixth hinge hole coaxial with the fourth hinge hole. Among them, the third hinge hole and the fifth hinge hole together constitute the sixth hinge point 21 of the first support on the base 1, and the fourth hinge hole and the sixth hinge hole together constitute the seventh hinge point 22 of the second support on the base 1.

[0059] It is worth noting that in the specific application process, the third hinge hole and the fourth hinge hole may not be set on the drill arm reinforcement plate, that is, the third ear plate and the fourth ear plate are directly set, the third hinge hole is opened on the third ear plate, and the fourth hinge hole is opened on the fourth ear plate. Preferably, the position corresponding to the third ear plate and the first ear plate 19 on the base can be set to a concave step structure or a backward inclined surface structure, so that the sixth hinge point 21 retreats a short distance on the base, thereby further shortening the overall length of the trolley.

[0060] In this embodiment, one arm 2, one pitch drive 3 and one roll drive 4 together constitute a group of construction units. In the specific implementation process, multiple groups of construction units can be arranged on the base 1 along the width direction of the base 1 at intervals.

[0061] Example 2

[0062] This embodiment discloses a drilling trolley, which has at least one boom in Embodiment 1. Specifically, the base on the boom is fixedly connected to the top of the drilling trolley, or the base on the boom is slidably connected to the top of the drilling trolley in cooperation with a track, or the base on the boom is rotatably connected to the top of the drilling trolley in cooperation with a slewing support.

[0063] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A boom, characterized in that: It includes a base, an arm, a pitch drive and a roll drive; The first end of the arm body is connected to the base, and the arm body has a pitch and roll stroke on the base; The first end of the pitch drive is connected to the base, and the second end is hinged to the arm body through a first hinge point; The first end of the side swing drive is connected to the base, and the second end is hinged to the arm body through a second hinge point; The first hinge point and the second hinge point are both located at the bottom of the arm body.

2. The boom according to claim 1, characterized in that: The first hinge point and the second hinge point are concentric and collinear.

3. The boom according to claim 1 or 2, characterized in that: The bottom of the arm body is fixedly connected with a connecting plate; A pitch hinged ear plate is provided at the bottom of the connecting plate, and a first hinge hole is provided on the pitch hinged ear plate; A side-swing hinged ear plate is provided at the bottom of the connecting plate, and a second hinged hole is provided on the side-swing hinged ear plate.

4. The boom according to claim 3, characterized in that: The top of the connecting plate is connected to the side of the arm body through a reinforcing rib plate.

5. The boom according to claim 4, characterized in that: The reinforcing rib plate is a tapered curved plate structure that is narrow at the top and wide at the bottom, with a first opening at the wider end and a second opening at the side; The edge of the first opening is connected to the connecting plate, and the edge of the second opening is connected to the side of the arm body.

6. The boom according to claim 4, characterized in that: The number of the reinforcing rib plate is one, and the reinforcing rib plate is arranged on one side of the top of the connecting plate corresponding to the side swing hinged ear plate; or The number of the reinforcing rib plates is more than two, and each of the reinforcing rib plates is arranged on one side of the top of the connecting plate corresponding to the side swing hinged ear plate, and is spaced apart along the width direction of the connecting plate; or There are multiple reinforcing rib plates, and both sides of the top of the connecting plate are provided with the reinforcing rib plates.

7. The boom according to claim 3, characterized in that: Part of the contour edges of the connecting plate located on both sides of the pitch hinged ear plate in the length direction are convex arc structures.

8. The boom according to claim 1 or 2, characterized in that: A first swing support is rotatably connected to the base, and a rotation axis of the first swing support on the base is parallel to a height direction of the base; The first end of the arm body is hinged to the first swing support through a third hinge point, the first end of the pitch drive is hinged to the first swing support through a fourth hinge point, and the fourth hinge point is located below the third hinge point.

9. The boom according to claim 1 or 2, characterized in that: A second swing support is rotatably connected to the base, and the rotation axis of the second swing support on the base is parallel to the height direction of the base; The first end of the side swing drive is hinged to the second swing support via a fifth hinge point.

10. A rock drilling rig, characterized in that: The drilling rig has a boom as described in any one of claims 1 to 9.

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