Magnetic gauge stand joint locking mechanism and magnetic gauge stand

Abstract

The utility model relates to a magnetic gauge stand joint locking mechanism and a magnetic gauge stand. The technical problem that an existing joint locking design is unreasonable is solved. The magnetic gauge stand joint locking mechanism comprises two groups of joint arms which are rotatably connected, an ejector rod is axially arranged in each group of joint arms in a penetrating manner, and a ball joint which can be connected with the ejector rod is also arranged in each group of joint arms; the tapered wedge matching block is radially arranged at one end, far away from the ball joint, of each group of joint arms in a penetrating manner, and one end of the tapered wedge matching block is provided with a propping gap which is propped against the end part of the ejector rod and is in tapered wedge fit with the ejector rod; and the rotating shaft is arranged between the two joint arms in a penetrating mode, the rotating shaft is fixedly connected with any wedge matching block, and one end of the rotating shaft penetrates out of the wedge matching block away from the fixed connecting end of the rotating shaft. The joint arm structure of the magnetic gauge stand joint locking mechanism is small in occupied space, the overall surface of the structure is smooth, three-point synchronous locking of the ends of the two joint arms and the rotating ends of the joint arms is formed in a wedge matching mode, and the locking efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of magnetic meter bases and relates to a magnetic meter base joint locking mechanism and a magnetic meter base. Background Art

[0002] For example, a Chinese patent document discloses a hydraulic magnetic meter stand with an adjustment block [201921757611.5], which includes a first rotating arm and a second rotating arm, wherein the first rotating arm and the second rotating arm are connected via a bidirectional rotating joint, and a hydraulic oil pipeline connected thereto is provided in the bidirectional rotating joint, a connecting sleeve is fixedly connected to the bidirectional rotating joint, a threaded opening connected to the connecting sleeve is provided on the hydraulic oil pipeline, and an adjustment block is threadedly connected to the threaded opening.

[0003] The defects of the above technical solution are: the joint locking is achieved through the hydraulic oil pipeline, which has high requirements for structural sealing and maintenance, and the overall structure occupies a large space, has poor surface flatness, and there is still much room for improvement in the compactness of the structure. Utility Model Content

[0004] The purpose of the utility model is to provide a magnetic meter base joint locking mechanism and a magnetic meter base in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The magnetic table seat joint locking mechanism comprises two sets of rotatably connected joint arms, each set of joint arms is axially penetrated by a push rod and a ball joint that can be connected to the push rod, and the magnetic table seat joint locking mechanism also includes:

[0007] An oblique wedge matching block is radially arranged on one end of each set of joint arms away from the ball joint, and one end of the oblique wedge matching block is provided with an abutting notch that abuts against the end of the push rod and is obliquely wedge-matched with the push rod;

[0008] The rotating shaft is passed through between the two joint arms, and the rotating shaft is fixedly connected to any one of the inclined wedge matching blocks, and one end of the rotating shaft passes through the inclined wedge matching block away from the fixed connection end of the rotating shaft, and the passing end of the rotating shaft is connected to a driving switch that can move along the axial direction of the rotating shaft and abuts against the outer end of the inclined wedge matching block.

[0009] Furthermore, the articulated arm is provided with an introduction hole for the wedge fitting block to be embedded.

[0010] Furthermore, the driving switch is a knob threadably connected to the rotating shaft.

[0011] Furthermore, the driving switch is a sliding block connected to the rotating shaft pin.

[0012] Furthermore, the driving switch is a driver connected to the rotating shaft.

[0013] Furthermore, the push rod includes a connecting rod respectively connected to the ball joint and the wedge matching block, and the two connecting rods are connected by a spring.

[0014] Furthermore, a positioning blind hole is provided at the end of the connecting rod, and both ends of the spring are connected in the positioning blind hole, forcing the push rod to have a tendency to move toward one end of the oblique wedge matching block.

[0015] Furthermore, the surface of the abutting notch is any one of an arc-shaped surface and an inclined surface.

[0016] Furthermore, one end of the push rod close to the wedge fitting block is provided with a radially convex arc-shaped convex surface.

[0017] The utility model also provides a magnetic meter base having the magnetic meter base joint locking mechanism as described above.

[0018] Compared with the prior art, the joint arm structure of the magnetic table base joint locking mechanism occupies less space, has a smooth overall surface, and adopts an oblique wedge matching method to form three-point synchronous locking of the two joint arm ends and the rotating end of the joint arm, thereby improving the locking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a magnetic meter base joint locking mechanism and a magnetic meter base provided by the utility model.

[0020] Figure 2 for Figure 1 A schematic cross-sectional view of the magnetic base joint locking mechanism.

[0021] Figure 3 for Figure 1 Schematic diagram of embodiment 2 of the magnetic table base joint locking mechanism.

[0022] Figure 4 for Figure 1 Schematic diagram of embodiment 3 of the magnetic table base joint locking mechanism.

[0023] In the figure, 10, articulated arm; 11, guide hole; 20, push rod; 21, connecting rod; 22, spring; 23, positioning blind hole; 24, arc-shaped convex surface; 30, ball joint; 40, oblique wedge matching block; 41, top notch; 50, rotating shaft; 60, driving switch. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] See also Figure 1 to Figure 2, which is a schematic diagram of a magnetic meter base joint locking mechanism and a magnetic meter base provided by the utility model. The magnetic meter base joint locking mechanism includes two sets of joint arms 10, a ball joint 30 inserted in the joint arms 10, a push rod 20, an inclined wedge matching block 40, and a rotating shaft 50 inserted between the joint arms 10, and a driving switch 60 connected to the rotating shaft 50. It can be imagined that the magnetic meter base joint locking mechanism also includes other functional components and specific structures, such as sealing components, lubrication structures, mounting structures, etc., which are all well-known technologies to those skilled in the art, so they will not be described in detail one by one here.

[0026] The two groups of articulated arms 10 are relatively independently arranged, and the two groups are rotatably connected by a rotating shaft 50. An axially arranged channel is provided in each group of articulated arms 10, and a push rod 20 is axially penetrated in the channel. The push rod 20 can move axially in the articulated arm 10, and the ball joint 30 can be axially connected to the push rod 20 in the articulated arm 10. The push rod 20 applies force to the ball joint 30, forcing the ball joint 30 to form a locked state at the end of the articulated arm 10.

[0027] A larger installation cavity is provided at the end of the articulated arm 10 away from the ball joint 30, and the oblique wedge fitting block 40 is radially penetrated in the installation cavity. The articulated arm 10 is provided with an introduction hole 11 for the oblique wedge fitting block 40 to be embedded in and connected with the installation cavity. The oblique wedge fitting block 40 can be fitted into the introduction hole 11 to form a guiding movement, and it occupies a small space and the overall surface of the structure is flat.

[0028] One end of the wedge-fitting block 40 is provided with abutment against the end of the push rod 20, and the wedge-fitting block 40 is provided with abutment notch 41 that is wedge-fitted with the push rod 20. The surface of the notch 41 is an arcuate surface or an inclined surface. In this embodiment, the notch 41 is an arcuate concave surface. When the wedge-fitting block 40 goes deep into the introduction hole 11, the notch 41 abuts against the end of the push rod 20 to form an oblique wedge fit, converting the longitudinal movement and rotation of the wedge-fitting block 40 into the lateral movement of the push rod 20 in the articulated arm 10. In addition, the end of the push rod 20 close to the wedge-fitting block 40 is provided with a radially convex arcuate convex surface 24, and the arcuate convex surface 24 is correspondingly connected to the notch 41. During the downward pressing process of the wedge-fitting block 40, the push rod 20 is prevented from rotating after being squeezed, which causes the problem of inconsistent locking state each time and loose locking.

[0029] The rotating shaft 50 is passed through the two articulated arms 10, and two oblique wedge fitting blocks 40 are arranged at the distal ends of the two articulated arms 10, and the oblique wedge fitting blocks 40 form a limit on the radial end of the articulated arms 10. Specifically, the rotating shaft 50 is fixedly connected to any one of the oblique wedge fitting blocks 40, and one end of the rotating shaft 50 passes through the oblique wedge fitting block 40 away from the fixed connection end of the rotating shaft 50. In this embodiment, the rotating shaft 50 and one of the oblique wedge fitting blocks 40 are an integrated structure, and the other oblique wedge fitting block 40 is sleeved on the outside of the rotating shaft 50, so that the two articulated arms 10 can rotate relative to each other with the rotating shaft 50 as the central axis. This structural design is more compact and the connection is reliable. It is conceivable that threaded connection or snap-on connection can also be used instead.

[0030] The protruding end of the rotating shaft 50 is connected with a driving switch 60 that can move axially along the rotating shaft 50 and abut against the outer end of the oblique wedge matching block 40. The driving switch 60 moves the rotating shaft 50 inward and is fixed on the rotating shaft 50, driving the two static oblique wedge matching blocks 40 to apply force to abut against the push rod 20 respectively, forcing the push rod 20 to move axially along the joint arm 10 and abut against the ball joint 30 to lock the joint arm 10. At the same time, the oblique wedge matching block 40 fixed to the rotating shaft 50 and the driving switch 60 form a rotational locking at both ends of the joint arm 10 in the radial direction, that is, the three-point synchronous locking of the two ends of the joint arm 10 and the rotating end of the joint arm 10 is formed by the oblique wedge matching method, which improves the locking efficiency.

[0031] In this embodiment, the drive switch 60 is a knob threadedly connected to the rotating shaft 50. The position of the knob on the rotating shaft 50 is adjusted manually or mechanically to achieve the spacing adjustment of the two wedge matching blocks 40 and the locking of the rotating end of the articulated arm 10.

[0032] The push rod 20 includes a connecting rod 21 connected to the ball joint 30 and the wedge fitting block 40 respectively. The two connecting rods 21 are connected by a spring 22. The elastic potential energy of the spring 22 provides elastic protection on the push rod 20 to avoid the push rod 20 from breaking after hard contact at both ends. The spring 22 provides elastic clamping when locking and retraction of the push rod 20 when the articulated arm 10 is in an active state.

[0033] A positioning blind hole 23 is provided at the end of the connecting rod 21, and both ends of the spring 22 are connected in the positioning blind hole 23, forcing the push rod 20 to have a tendency to move toward one end of the oblique wedge matching block 40. The positioning blind hole 23 ensures that the force application point of the spring 22 at the end of the connecting rod 21 is stable, and cooperates with the channel inside the joint arm 10 to form a deformation guide for the spring 22.

[0034] Embodiment 2

[0035] See also Figure 3The structure and principle of this embodiment are basically the same as those of the first embodiment, with the only difference being that the drive switch 60 is a sliding block pin-connected to the rotating shaft 50, and the position of the sliding block on the rotating shaft 50 is determined by the pin connection, that is, the spacing adjustment of the two inclined wedge matching blocks 40 and the locking of the rotating end of the articulated arm 10 in the first embodiment are also achieved.

[0036] Embodiment 3

[0037] See also Figure 4 The structure and principle of this embodiment are basically the same as those of the first embodiment, with the only difference being that the drive switch 60 is a driver connected to the rotating shaft 50, and the driver is a motor, a cylinder or a hydraulic device, which drives the rotating shaft 50 to move axially directly, that is, the spacing adjustment of the two inclined wedge matching blocks 40 and the locking of the rotating end of the articulated arm 10 in the first embodiment are also achieved.

[0038] Embodiment 4

[0039] The utility model also provides a magnetic meter stand, which has the magnetic meter stand joint locking mechanism as described above. Except for the magnetic meter stand joint locking mechanism, other components are all existing technologies or commercially available parts.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A magnetic table base joint locking mechanism, comprising two sets of rotatably connected joint arms, each set of joint arms having a push rod axially penetrated therein, and a ball joint capable of connecting with the push rod, characterized in that: The magnetic seat joint locking mechanism also includes: An oblique wedge matching block is radially arranged on one end of each set of joint arms away from the ball joint, and one end of the oblique wedge matching block is provided with an abutting notch that abuts against the end of the push rod and is obliquely wedge-matched with the push rod; The rotating shaft is passed through between the two joint arms, and the rotating shaft is fixedly connected to any one of the inclined wedge matching blocks, and one end of the rotating shaft passes through the inclined wedge matching block away from the fixed connection end of the rotating shaft, and the passing end of the rotating shaft is connected to a driving switch that can move along the axial direction of the rotating shaft and abuts against the outer end of the inclined wedge matching block.

2. The magnetic seat joint locking mechanism according to claim 1, characterized in that: The articulated arm is provided with an introduction hole for the wedge matching block to be embedded.

3. The magnetic seat joint locking mechanism according to claim 2, characterized in that: The driving switch is a knob threadably connected to the rotating shaft.

4. The magnetic seat joint locking mechanism according to claim 2, characterized in that: The driving switch is a sliding block connected to the rotating shaft pin.

5. The magnetic seat joint locking mechanism according to claim 2, characterized in that: The driving switch is a driver connected to the rotating shaft.

6. The magnetic seat joint locking mechanism according to claim 1, characterized in that: The push rod comprises a connecting rod respectively connected with the ball joint and the wedge matching block, and the two connecting rods are connected by a spring.

7. The magnetic seat joint locking mechanism according to claim 6, characterized in that: The end of the connecting rod is provided with a positioning blind hole, and the two ends of the spring are connected in the positioning blind hole, forcing the push rod to have a tendency to move toward one end of the oblique wedge matching block.

8. The magnetic seat joint locking mechanism according to claim 1, characterized in that: The surface of the abutting notch is any one of an arc surface and an inclined surface.

9. The magnetic seat joint locking mechanism according to claim 8, characterized in that: One end of the push rod close to the wedge matching block is provided with a radially convex arc convex surface.

10. A magnetic table stand, characterized in that: A magnetic table seat joint locking mechanism having the magnetic table seat joint locking mechanism as claimed in any one of claims 1 to 9.

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