Movable butt joint of bearing box pressure test water pipe

Abstract

The utility model belongs to the technical field of hydrostatic test appliances, and particularly relates to a movable butt joint of a bearing box pressure test water pipe. Lever handles are arranged on the two sides of a pipe body of the positioning pipe respectively, a core pipe is sleeved with the positioning pipe, arc-shaped clamping pieces are symmetrically arranged in the positioning pipe, the outer sides of the arc-shaped clamping pieces are connected with tail rods, the tail rods penetrate through through holes in the pipe body of the positioning pipe and are in dynamic sealing connection with the through holes, and the outer sides of the tail rods are connected with the ends of the lever handles. A pre-pressing spring is arranged between the other end of the lever handle and the positioning pipe; the movable butt joint is simple in structure and convenient to operate, and has the characteristics of stable butt joint, sealed water delivery and high working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pressure testing equipment, in particular to a movable butt joint for a pressure testing water pipe of a bearing box. Background Art

[0002] The bearing seat is used to support and position the bearing. It is a combination of the bearing and the housing. The outer ring fixes the bearing, and the inner ring rotates with the shaft. It always keeps consistent with the direction of transmission (such as the direction of motor operation) and maintains balance. It has the characteristics of compact structure, sensitive rotation, and easy installation and maintenance.

[0003] The bearing seat structure generally includes an upper cover, a lower cover, a bearing shell, and cooling and lubrication mechanisms, etc. The whole is cast and then milled. After assembly, the cooling water channel needs to be pressure tested.

[0004] The cooling water channel of the bearing box is generally equipped with a water inlet pipe, and the end of the water inlet pipe is sealed by a nut. When conducting a water pressure test, the water pipe is connected to the water inlet pipe of the bearing box through threads. Due to the different specifications of the bearing boxes, it is difficult for the water pipe to match all the water inlet pipes, which is prone to problems such as poor sealing; moreover, the docking process is generally completed manually, and the threaded docking operation is cumbersome and the work efficiency is low. Utility Model Content

[0005] The utility model aims to provide a movable butt joint for a bearing box pressure test water pipe which has a simple structure and is easy to operate, and has the characteristics of stable butt joint, sealed water delivery and high working efficiency.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A movable joint for a bearing box pressure test water pipe, characterized in that it includes a positioning tube with lever handles respectively arranged on both sides of the tube body, a core tube is sleeved inside the positioning tube, arc-shaped clips are symmetrically arranged inside the positioning tube, the outer side of the arc-shaped clips is connected to a tail rod, the tail rod passes through a through hole on the positioning tube body and is dynamically sealed with the through hole, the outer side of the tail rod is connected to the end of the lever handle, and a pre-compression spring is arranged between the other end of the lever handle and the positioning tube.

[0008] Additional technical features of the movable joint constituting the above-mentioned bearing box pressure test water pipe include:

[0009] The body of the positioning tube is provided with a chute, the body of the core tube is connected to the water pipe, the water pipe and the core tube move along the chute, one end of the core tube is a docking port, and the other end is a closed end corresponding to the limiting structure provided in the positioning tube;

[0010] The limiting structure includes a shaft rod radially disposed in the positioning tube, an eccentric cam is sleeved on the shaft rod, the eccentric cam is connected to a handle, and when the handle is turned, the eccentric cam presses the closed end of the core tube;

[0011] ——The water pipe is provided with an on-off valve, and the water pipe is provided with a pressure sensor and / or a flow sensor;

[0012] The core tube is provided with an annular sealing gasket at the butt joint, which is arranged in an annular groove at the end face of the butt joint. The annular sealing gasket is pressed tightly after the butt joint is butted with the water inlet pipe of the bearing box;

[0013] ——The inner surface of the arc-shaped clip is provided with a thread, which cooperates with the thread of the outer wall of the water inlet pipe of the bearing box.

[0014] Compared with the prior art, the movable butt joint of the pressure test water pipe of the bearing box provided by the utility model has the following advantages: the two sides of the positioning pipe of the movable butt joint are provided with retractable arc-shaped clamping pieces, the arc-shaped clamping pieces are driven by a lever handle, and a pre-stress spring is arranged between the other end of the lever handle and the positioning pipe, that is, the lever handle is pressed, the arc-shaped clamping pieces are relatively separated, so that the water inlet pipe of the bearing box is inserted into the positioning pipe, and the lever handle is released, and under the action of the pre-stress spring, the arc-shaped clamping pieces clamp the water inlet pipe towards each other, and the core pipe in the positioning pipe and the water inlet pipe are pressed and docked or socket-jointed. The movable joint has a simple structure and is easy to use. It realizes the functions of quick docking and sealed water supply, which greatly improves the experimental efficiency. Secondly, the outer side of the arc-shaped clamp is connected to the tail rod, which passes through the through hole on the positioning tube body and is dynamically sealed with the through hole. The outer side of the tail rod is connected to the end of the lever handle. This structure facilitates the lever handle to drive the arc-shaped clamp, and the worker can operate it with one hand, which is convenient, fast, time-saving and labor-saving. The arc-shaped clamp clamps the bearing box water inlet pipe stably and firmly, and the core tube is pressed or socketed at the water inlet pipe mouth. The water supply is tight and it is not easy to leak or the joint falls off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a movable butt joint of a bearing box pressure test water pipe of the utility model;

[0016] Figure 2 It is a side view structural schematic diagram of the movable docking joint. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the structure and working principle of the movable joint of the bearing box pressure test water pipe provided by the utility model in conjunction with the accompanying drawings. 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.

[0018] In the description of the present invention, unless otherwise specified, the terms "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set / provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0020] like Figure 1 As shown, the movable joint structure of the bearing box pressure test water pipe includes a positioning tube 1 with lever handles 2 respectively arranged on both sides of the tube body, a core tube 11 is sleeved inside the positioning tube 1, arc-shaped clips 3 are symmetrically arranged inside the positioning tube 1, the outer side of the arc-shaped clips 3 is connected to the tail rod 31, the tail rod 31 passes through the through hole on the tube body of the positioning tube 1 and is dynamically sealed with the through hole, the outer side of the tail rod 31 is connected to the end of the lever handle 2, and a preload spring 4 is arranged between the other end of the lever handle 2 and the positioning tube 1.

[0021] Its working principle is: the positioning tube 1 of the movable joint is connected with the water inlet pipe of the bearing box by socket, the lever handle 2 is held by hand to make the arc-shaped clamping piece 3 in the positioning tube 1 relatively far away, the water inlet pipe is inserted into the positioning tube 1 and pressed or socket-connected with the core tube 11, and then the lever handle 2 is released. Under the action of the pre-compression spring 4, the arc-shaped clamping piece 3 relatively clamps the end of the water inlet pipe to complete the clamping and docking positioning, and the other end of the core tube 11 is connected to the water pipe for a water pressure test.

[0022] It should be noted that there are many ways to achieve a dynamic sealing connection between the tail rod 31 of the above-mentioned arc-shaped clamp 3 and the through hole of the tube body of the positioning tube 1. An annular groove for fixing an annular sealing ring can be set in the through hole of the tube body, and the tail rod 31 passes through the sealing ring to compress the sealing contact; the hinge fulcrum 21 of the above-mentioned lever handle 2 is set on both sides of the tube body of the positioning tube 1, close to one side of the arc-shaped clamp 3.

[0023] In the structure constituting the movable joint of the above-mentioned bearing box pressure test water pipe,

[0024] --like Figure 2As shown, as a preferred embodiment, the tube body of the positioning tube 1 is provided with a chute 5, the tube body of the core tube 11 is transversely connected to the water delivery pipe 6, the water delivery pipe 6 passes through the chute 5 and can move along the chute 5 together with the core tube 11, one end of the core tube 11 is a docking port, which is socketed or pressed with the water inlet pipe of the bearing box, and the other end is a closed end and corresponds to the limiting structure set in the positioning tube 1. When the docking is completed, the docking position of the core tube 11 is fixed by the limiting mechanism to prevent liquid leakage or joint detachment;

[0025] ——Preferably, the above-mentioned limiting structure includes a shaft 71 radially disposed in the positioning tube 1, an eccentric cam 72 is mounted on the shaft 71, and the eccentric cam 72 is connected to a handle 73. When the handle 73 is turned, the eccentric cam 72 presses the closed end of the core tube 11. The handle 73 is generally turned more than 90 degrees, so that the eccentric cam 72 presses against the closed end of the core tube 11 to form a limit. The structure is simple and convenient to manufacture and use;

[0026] ——Furthermore, the water pipe 6 is provided with an on-off valve 61, such as a ball valve with an on-off handle, which is convenient for handheld operation. The water pipe 6 is provided with a pressure sensor and / or a flow sensor, which can obtain the water pressure and control the flow in real time, meeting the experimental requirements;

[0027] ——Preferably, the docking port of the core tube 11 is provided with an annular sealing gasket 12, which is arranged in an annular groove on the end face of the docking port. After the docking port is docked with the water inlet pipe of the bearing box, the annular sealing gasket 12 is pressed tightly, and the core tube 11 is pressed tightly against the water inlet pipe opening, and the sealing effect is stable;

[0028] ——Furthermore, a thread 30 is provided on the inner surface of the arc-shaped clamp 3, which cooperates with the thread of the outer wall of the water inlet pipe of the bearing box. The thread 30 of the arc-shaped clamp 3 can fit the outer wall of the water inlet pipe more closely, achieving a tight clamping effect, and better positioning and sealing effects.

[0029] The above-described implementation modes are only used to illustrate the technical solution of the utility model, and are not limiting conditions for the implementation of the utility model. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, should be included in the scope of the claims of the utility model.

Claims

1. A movable joint for a bearing box pressure test water pipe, characterized in that: It comprises a positioning tube with lever handles respectively arranged on both sides of the tube body, a core tube is arranged inside the positioning tube, arc-shaped clips are symmetrically arranged inside the positioning tube, the outer side of the arc-shaped clips is connected to a tail rod, the tail rod passes through a through hole on the tube body of the positioning tube and is dynamically sealed with the through hole, the outer side of the tail rod is connected to the end of the lever handle, and a preload spring is arranged between the other end of the lever handle and the positioning tube.

2. The movable joint of the bearing box pressure test water pipe according to claim 1, characterized in that: The body of the positioning tube is provided with a slide groove, the body of the core tube is connected to the water pipe, the water pipe moves along the slide groove, one end of the core tube is a docking port, and the other end is a closed end corresponding to the limiting structure arranged in the positioning tube.

3. The movable joint of the bearing box pressure test water pipe according to claim 2, characterized in that: The limiting structure comprises a shaft rod radially arranged in the positioning tube, an eccentric cam is sleeved on the shaft rod, the eccentric cam is connected to a handle, and the eccentric cam presses the closed end of the core tube when the handle is rotated.

4. The movable joint of the bearing box pressure test water pipe according to claim 2, characterized in that: The water delivery pipe is provided with an on-off valve, and the water delivery pipe is provided with a pressure sensor and / or a flow sensor.

5. The movable joint of the bearing box pressure test water pipe according to claim 2, characterized in that: The butt joint of the core tube is provided with an annular sealing gasket, which is arranged in an annular groove on the end face of the butt joint. The annular sealing gasket is pressed tightly after the butt joint is butted with the water inlet pipe of the bearing box.

6. The movable joint of the bearing box pressure test water pipe according to claim 1, characterized in that: The inner surface of the arc-shaped clip is provided with a thread which matches with the thread of the outer wall of the water inlet pipe of the bearing box.

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