Drill jumbo boom pitching driving mechanism and drill jumbo

Abstract

The utility model discloses a drill jumbo boom pitching driving mechanism and a drill jumbo. The drill jumbo boom pitching driving mechanism comprises a supporting seat, a crank arm, a driving oil cylinder, a first connecting rod and a second connecting rod, the first end of the crank arm and the first end of the first connecting rod are hinged to the supporting seat, the fixed end of the driving oil cylinder and the first end of the second connecting rod are hinged to the crank arm at intervals, and the first end of the second connecting rod is located between the fixed end of the driving oil cylinder and the supporting seat; the telescopic end of the driving oil cylinder is hinged to the second end of the second connecting rod, and the second end of the first connecting rod is hinged to the middle area of the second connecting rod. The connecting rod mechanism is applied to the field of rock drilling tables, the load on the second connecting rod is dispersed by increasing the hinge points, the load of the connecting rod mechanism is prevented from being concentrated at the same point, the service life is prolonged, the reliability is improved, and structural damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drilling trolleys, in particular to a rock drilling trolley arm pitching drive mechanism and the rock drilling trolley. Background Art

[0002] In the design of rock drilling booms for construction machinery, a linear linkage is commonly used to achieve the boom's pitch and roll motion on the rotary table. However, traditional linear linkages often lack stability when dealing with uneven force or load distribution, causing the boom to become unstable or tilt. Furthermore, in certain situations, this structure is prone to distortion or stress concentration, significantly reducing the lifespan and reliability of the support mechanism and potentially even causing structural damage.

[0003] At present, the existing technology uses a cylinder and a connecting rod mechanism instead of a linear connecting rod mechanism to achieve the pitch movement of the boom. Although it avoids the problem of instability or tilt of the boom to a certain extent, the load of the connecting rod structure is concentrated at the same point, and there is also the problem of low service life and reliability. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a drilling rig boom pitching drive mechanism and a drilling rig, which can effectively avoid the load of the connecting rod mechanism from being concentrated at the same point, thereby enhancing its service life and reliability.

[0005] To achieve the above-mentioned purpose, the utility model provides a rock drilling rig boom pitching drive mechanism, comprising a support base, a crank arm, a drive cylinder, a first connecting rod and a second connecting rod;

[0006] The first end of the crank arm and the first end of the first connecting rod are hinged on the support seat, the fixed end of the driving oil cylinder and the first end of the second connecting rod are hinged on the crank arm at intervals, and the first end of the second connecting rod is located between the fixed end of the driving oil cylinder and the support seat;

[0007] The telescopic end of the driving oil cylinder is hinged to the second end of the second connecting rod, and the second end of the first connecting rod is hinged to the middle area of ​​the second connecting rod.

[0008] In one embodiment, the second connecting rod includes a first rod body and a second rod body;

[0009] The first end of the first rod is hinged to the crank arm, the second end of the first rod is hinged to the first end of the second rod, and the second end of the second rod is hinged to the telescopic end of the driving cylinder;

[0010] The second end of the first connecting rod is hinged to the middle area of ​​the first rod body or the second rod body.

[0011] In one embodiment, the support base includes a base plate and two triangular plates symmetrically arranged on the base plate;

[0012] The first end of the curved arm is hinged between the top hinge points of the two triangular plates, and the first end of the first connecting rod is hinged between the bottom hinge points of the two triangular plates.

[0013] In one embodiment, there are two second connecting rods, and the first ends of the two second connecting rods are symmetrically hinged on both sides of the crank arm;

[0014] The first connecting rod is hinged between the two second connecting rods.

[0015] In one embodiment, there are two driving cylinders, the fixed ends of the two driving cylinders are symmetrically hinged on both sides of the crank arm, and the telescopic ends of the two driving cylinders are hinged to the second end of the second connecting rod on the corresponding side.

[0016] In order to achieve the above-mentioned purpose, the present invention also provides a drilling rig, characterized in that the drilling rig is provided with the above-mentioned drilling rig arm pitching drive mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] The utility model hinges the first end of the second connecting rod on the crank arm, and then hinges the driving cylinder to the second end of the second connecting rod. At the same time, the first connecting rod is hinged to the middle area of ​​the second connecting rod. By increasing the hinge points, the load on the second connecting rod is dispersed, which avoids the load of the connecting rod mechanism from being concentrated at the same point, thereby enhancing its service life and reliability, and avoiding structural damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of an implementation of the drilling rig boom pitching drive mechanism in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of another embodiment of the drilling rig boom pitch drive mechanism in the embodiment of the present utility model.

[0022] Reference numerals: support base 1 , crank arm 2 , driving cylinder 3 , first connecting rod 4 , second connecting rod 5 , first rod body 501 , second rod body 502 .

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection, electrical connection, physical connection, or wireless communication connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] 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 this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0029] like Figure 1The figure shows a drilling rig boom pitch drive mechanism disclosed in this embodiment, which mainly includes a support base 1, a crank arm 2, a drive cylinder 3, a first connecting rod 4, and a second connecting rod 5. The first end of the crank arm 2 and the first end of the first connecting rod 4 are hinged to the support base 1. The fixed end of the drive cylinder 3 and the first end of the second connecting rod 5 are hinged to the crank arm 2 at intervals, with the first end of the second connecting rod 5 located between the fixed end of the drive cylinder 3 and the support base 1. The telescopic end of the drive cylinder 3 and the second end of the second connecting rod 5 are hinged to each other, and the second end of the first connecting rod 4 is hinged to the middle area of ​​the second connecting rod 5.

[0030] Compared with the prior art in which the telescopic end of the driving cylinder 3, the second end of the first connecting rod 4, and the second end of the second connecting rod 5 are directly hinged at a common hinge point, the drilling rig boom pitch drive mechanism in this embodiment hinges the second end of the first connecting rod 4 to the middle area of ​​the second connecting rod 5, and disperses the load on the second connecting rod 5 by increasing the hinge point, thereby avoiding the load of the connecting rod mechanism from being concentrated at the same point, thereby enhancing its service life and reliability, and thus avoiding structural damage.

[0031] As a preferred embodiment, Figure 1 Continue to add hinge points based on the above. For example Figure 2 As shown, the second connecting rod 5 now includes a first rod body 501 and a second rod body 502. The first end of the first rod body 501 is hinged to the crank arm 2, the second end of the first rod body 501 is hinged to the first end of the second rod body 502, and the second end of the second rod body 502 is hinged to the telescopic end of the driving cylinder 3. In other words, the second connecting rod 5 is replaced with a two-link mechanism, and the second end of the first connecting rod 4 is hinged to the middle area of ​​the second rod body 502. In other applications, the second end of the first connecting rod 4 can also be hinged to the middle area of ​​the first rod body 501. Furthermore, the second connecting rod 5 can also be replaced with a three-link mechanism, where the connecting rods at both ends are hinged to the crank arm 2 and the driving cylinder 3, respectively, and the middle connecting rod is hinged to the first connecting rod 4.

[0032] In the specific implementation process, the support base 1 includes a base plate and two triangular plates symmetrically arranged on the base plate;

[0033] The first end of the crank arm 2 is hinged between the hinge points at the top ends of the two triangular plates. Since the first connecting rod 4 is the main load-bearing part supporting the crank arm 2, the thickness of the first connecting rod 4 is set to be basically the same as that of the crank arm 2. Therefore, the first end of the first connecting rod 4 is hinged between the hinge points at the bottom ends of the two triangular plates.

[0034] As a preferred embodiment, the number of the second connecting rods 5 and the driving cylinders 3 are both two, the first ends of the two second connecting rods 5 are symmetrically hinged on both sides of the crank arm 2, the fixed ends of the two driving cylinders 3 are also symmetrically hinged on both sides of the crank arm 2, the first connecting rod 4 is hinged between the two second connecting rods 5, and the telescopic ends of the two driving cylinders 3 are hinged to the second ends of the second connecting rods 5 on the corresponding side, so that the overall pitching drive mechanism of the rock drilling rig boom is symmetrical along the axial direction of the crank arm 2, thereby improving the support stability of the crank arm 2.

[0035] It should be noted that the first end and the second end referred to in this embodiment do not refer to the end surface area, but include the end surface and the area closer to the end surface than other structural components.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A drilling rig boom pitching drive mechanism, characterized in that: It includes a support base, a crank arm, a driving cylinder, a first connecting rod and a second connecting rod; The first end of the crank arm and the first end of the first connecting rod are hinged on the support seat, the fixed end of the driving oil cylinder and the first end of the second connecting rod are hinged on the crank arm at intervals, and the first end of the second connecting rod is located between the fixed end of the driving oil cylinder and the support seat; The telescopic end of the driving oil cylinder is hinged to the second end of the second connecting rod, and the second end of the first connecting rod is hinged to the middle area of ​​the second connecting rod.

2. The drilling rig boom pitching drive mechanism according to claim 1, wherein: The second connecting rod includes a first rod body and a second rod body; The first end of the first rod is hinged to the crank arm, the second end of the first rod is hinged to the first end of the second rod, and the second end of the second rod is hinged to the telescopic end of the driving cylinder; The second end of the first connecting rod is hinged to the middle area of ​​the first rod body or the second rod body.

3. The drilling rig boom pitching drive mechanism according to claim 1 or 2, wherein: The support base includes a base plate and two triangular plates symmetrically arranged on the base plate; The first end of the curved arm is hinged between the top hinge points of the two triangular plates, and the first end of the first connecting rod is hinged between the bottom hinge points of the two triangular plates.

4. The drilling rig boom pitching drive mechanism according to claim 3, wherein: There are two second connecting rods, and the first ends of the two second connecting rods are symmetrically hinged on both sides of the crank arm; The first connecting rod is hinged between the two second connecting rods.

5. The drilling rig boom pitching drive mechanism according to claim 4, characterized in that: There are two driving cylinders, and the fixed ends of the two driving cylinders are symmetrically hinged on both sides of the crank arm. The telescopic ends of the two driving cylinders are hinged to the second end of the second connecting rod on the corresponding side.

6. A rock drilling rig, characterized in that: The drilling rig is provided with a drilling rig boom pitching drive mechanism according to any one of claims 1 to 5.

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