CN215406261U

CN215406261U - Operating mechanism for engineering machinery with small space structure

Info

Publication number: CN215406261U
Application number: CN202121462252.8U
Authority: CN
Inventors: 张莉
Original assignee: Luoyang Fangtai Flexible Shaft Controller Technology Co ltd
Current assignee: Luoyang Fangtai Flexible Shaft Controller Technology Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-04
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to an engineering machinery operating mechanism with a small space structure in the technical field of control of hydraulic pumps, which comprises a fixing plate, a control box, a spline shaft and a handle rod, wherein the fixing plate and the handle rod are positioned at the same side of a lower shell, the lower end of the handle rod is provided with a handle seat, the bottom of the handle seat is provided with a necking round bottom groove, the handle seat is provided with two connecting blocks, the necking round bottom groove is sleeved on one end of the spline shaft positioned at the outer side of the lower shell, and the two connecting blocks are also provided with connecting pieces for driving the two connecting blocks to tightly hold the spline shaft. According to the utility model, the handle rod and the fixing plate are positioned at the same side of the control box, so that the handle rod and the fixing plate can be partially overlapped in the transverse direction, the handle seat is fixed on the shaft head of the spline shaft through the connecting piece, a nut does not need to be installed on the spline shaft, the length of the spline shaft is reduced, the thickness of the whole mechanism is further reduced, the operation space during installation and maintenance is larger, and the distance between the handle ball and a seat or a door is increased.

Description

Operating mechanism for engineering machinery with small space structure

Technical Field

The utility model relates to the technical field of control of hydraulic pumps, in particular to an engineering machinery operating mechanism with a small space structure.

Background

The operating mechanism for control of hydraulic pump all installs in the booth clearance between seat and the door, current operating mechanism generally includes the handle bar, the control subassembly that has lower casing and last casing, a fixed plate for fixed control box, fixed plate and handle bar are located the control box both sides respectively, the inside gear that is provided with of control box and the rack shaft with gear engagement, and be used for drive gear pivoted integral key shaft, integral key shaft one end is passed the last casing, the handle ball is installed at the handle top, the bottom is provided with the handle seat, handle seat key joint is on the shaft body of integral key shaft, and utilize the nut to fix the handle seat, such operating mechanism has following defect: 1. the spline shaft is required to be connected with the nut, so that the thickness of the fixed plate and the control box after assembly is larger, the space distance between the operating assembly and the door and the seat is smaller after installation, the space distance between the handle ball and the door or the seat is smaller, the handle ball is seriously deviated from the center, and the operation of a driver is very difficult.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above problems, and an object of the present invention is to provide a control mechanism for a construction machine having a small space structure.

The utility model realizes the purpose through the following technical scheme:

the utility model provides a little spatial structure's operating mechanism for engineering machine tool, which comprises a fixing plate and i, the control box, the handle ball, the integral key shaft, the handle bar, the control box includes casing and last casing down, and casing and the inside gear and the rack that is provided with intermeshing of last casing down, fixed plate and casing fixed connection down, the fixed plate all is located casing homonymy down with the handle bar, handle bar lower extreme integrated into one piece has the handle seat, the throat circle end groove has been seted up to handle seat bottom, make the handle seat have two connecting blocks, throat circle end groove cover is established and is served at the integral key shaft that is located the casing outside down, still install its connecting piece that holds the integral key shaft of drive on two connecting blocks, and the center pin of connecting piece corresponds perpendicularly with the center pin of integral key shaft, the integral key shaft other end runs through casing and gear and rotates to be connected on last casing down.

Preferably, the connecting piece includes bolt and nut, sets up the mounting hole of coaxial setting on two connecting blocks, and two mounting holes are the diameter and are greater than the through-hole of the screw rod external diameter of bolt, and the screw rod of bolt passes two through-holes to with the nut cooperation.

Preferably, the connecting piece is a bolt, the two connecting blocks are provided with mounting holes which are coaxially arranged, one of the two mounting holes is a through hole which can enable a screw rod of the bolt to pass through, and the other mounting hole is a threaded hole which can be matched with the bolt.

Preferably, the top of the handle rod is provided with a handle ball.

Preferably, the inner wall of the necking round bottom groove is provided with a convex edge capable of being matched with the spline shaft.

Has the advantages that:

1. compared with the prior art, the assembly process is adjusted, so that the handle rod and the fixing plate are positioned at the same side of the control box, the handle rod and the fixing plate can be partially overlapped in the transverse direction, and the thickness of the whole mechanism is reduced;

2. can make the handle seat fix on the shaft body of integral key shaft through the connecting piece, no longer need be at the epaxial nut of installation of integral key shaft, consequently reduced the length of integral key shaft, further reduced the thickness of whole mechanism.

Additional features of the utility model and advantages thereof will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of a prior art steering mechanism;

FIG. 2 is a right side view of a prior art steering mechanism;

FIG. 3 is a cross-sectional view of a prior art steering mechanism;

FIG. 4 is a schematic view of a prior art handle bar of a steering mechanism;

FIG. 5 is a schematic view of a prior art mounting position of a steering mechanism;

FIG. 6 is a front view of the present invention;

FIG. 7 is a right side view of the present invention;

FIG. 8 is a schematic view of the construction of the handle bar of the present invention;

fig. 9 is a schematic view of the installation position of the present invention.

The reference numerals are explained below:

1. a fixing plate; 2. a control box; 21. a lower housing; 22. an upper housing; 3. a handle ball; 4. a spline shaft; 5. a handle bar; 51. a handle seat; 52. a connecting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the first embodiment, as shown in fig. 6 to 9, an operating mechanism for an engineering machine with a small space structure includes a fixing plate 1, a control box 2, a handle ball 3, a spline shaft 4, and a handle rod 5, where the control box 2 includes a lower casing 21 and an upper casing 22, and a gear and a rack shaft engaged with each other are disposed inside the lower casing 21 and the upper casing 22, the fixing plate 1 is fixedly connected to the lower casing 21, the fixing plate 1 and the handle rod 5 are both located at the same side of the lower casing 21, and it is ensured that the fixing plate 1 is located without interfering with the rotation of the handle rod 5, a handle seat 51 is integrally formed at the lower end of the handle rod 5, a necking circular bottom groove is formed at the bottom of the handle seat 51, so that the handle seat 51 has two connecting blocks, the necking circular bottom groove is sleeved on one end of the spline shaft 4 located outside the lower casing 21, connecting pieces 52 for driving the connecting pieces to tightly embrace the spline shaft 4 are further installed on the two connecting blocks, and the central axes of the connecting pieces 52 are correspondingly perpendicular to the spline shaft of the spline shaft 4, the other end of the spline shaft 4 penetrates through the lower shell 21 and the gear and is rotatably connected to the upper shell 22, so that the handle rod 5 and the fixing plate 1 are positioned at the same side of the control box 2, the handle rod 5 can be partially overlapped with the fixing plate 1 in the transverse direction, the thickness of the whole mechanism is reduced, the operation space during installation and maintenance is larger, the handle seat 51 can be tightly fixed on the shaft body of the spline shaft 4 through the connecting piece 52, a convex rib capable of being matched with the spline shaft can be arranged on the inner wall of the necking round bottom groove, the handle seat 51 and the spline shaft 4 are further prevented from moving relatively, a nut does not need to be arranged on the shaft body of the spline shaft 4 any more, the length of the spline shaft 4 is reduced, the thickness of the whole mechanism is further reduced, the operation space during installation and maintenance is larger, the distance between the handle rod 2 and a seat or a door is increased, and the operation of a driver is facilitated, because the spline shaft 4 is connected with the gear key, the rotation of the spline shaft 4 can drive the gear to rotate.

In the second embodiment, on the basis of the first embodiment, the connecting member 52 includes a bolt and a nut, the two connecting blocks are both provided with mounting holes, the two mounting holes are coaxial, the two mounting holes are through holes with diameters larger than the outer diameter of the bolt, and the bolt passes through the two through holes and is matched with the nut.

In the third embodiment, on the basis of the first embodiment, the connecting member 52 is a bolt, the two connecting blocks are both provided with mounting holes, the two mounting holes are coaxial, one of the two mounting holes is a through hole through which a screw of the bolt can pass, and the other mounting hole is a threaded hole which can be matched with the bolt.

In the fourth embodiment, on the basis of the first embodiment, as shown in fig. 7, an arc-shaped receding groove coaxial with the spline shaft 4 is formed at the top of the fixing plate 1, so that the handle seat 51 can swing conveniently without interference.

In the fifth embodiment, as shown in fig. 6 and 7, a handle ball 3 is mounted on the top of the handle bar 5.

In the structure, when the hydraulic pump is used, the handle ball 3 is held, the handle rod 5 is pushed forwards or backwards, the handle rod 5 drives the handle seat 51 to rotate, the handle seat 51 drives the spline shaft 4 to rotate, the spline shaft 4 drives the gear to rotate, and the gear drives the rack to move, so that the function of controlling the hydraulic pump is realized.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a little spatial structure's operating mechanism for engineering machine tool, includes fixed plate (1), control box (2), handle ball (3), integral key shaft (4), handle pole (5), and control box (2) are including casing (21) and last casing (22) down, and casing (21) and last casing (22) inside gear and the rack that is provided with intermeshing down, fixed plate (1) and casing (21) fixed connection down, its characterized in that: fixed plate (1) all is located casing (21) homonymy down with handle pole (5), handle pole (5) lower extreme integrated into one piece has handle seat (51), the throat circular slot has been seted up to handle seat (51) bottom, make handle seat (51) have two connecting blocks, the throat circular slot cover is established and is served at integral key shaft (4) that are located casing (21) outside down, still install its connecting piece (52) of holding integral key shaft (4) tightly of drive on two connecting blocks, and the center pin of connecting piece (52) corresponds perpendicularly with the center pin of integral key shaft (4), integral key shaft (4) other end runs through casing (21) and gear down and rotates to be connected on last casing (22).

2. The operating mechanism for construction machinery having a small space structure according to claim 1, wherein: the connecting piece (52) comprises a bolt and a nut, the two connecting blocks are provided with mounting holes which are coaxially arranged, the two mounting holes are through holes of which the diameters are larger than the outer diameters of the screw rods of the bolt, and the screw rods of the bolt penetrate through the two through holes and are matched with the nut.

3. The operating mechanism for construction machinery having a small space structure according to claim 1, wherein: the connecting piece (52) is a bolt, the two connecting blocks are provided with mounting holes which are coaxially arranged, one of the two mounting holes is a through hole which can enable a screw rod of the bolt to pass through, and the other mounting hole is a threaded hole which can be matched with the bolt.

4. The operating mechanism for construction machinery having a small space structure according to claim 1, wherein: the top of the handle rod (5) is provided with a handle ball (3).

5. The operating mechanism for construction machinery having a small space structure according to claim 1, wherein: the inner wall of the necking round bottom groove is provided with a convex edge which can be matched with the spline shaft (4).