Lift valve square flange turning clamp

Abstract

A lift valve square flange turning clamp comprises a backrest disc (1), a lower supporting plate (2) and a pair of balancing weights (3), the lower supporting plate (2) is installed on the lower portion of the backrest disc (1), a positioning mandrel (4) is arranged on the lower supporting plate (2), the balancing weights (3) are installed on the upper portion of the backrest disc (1) in a mirror image distribution mode, and bolt inlet holes (5) are formed in the balancing weights (3). The tool has the advantages that a pair of balancing weights is added, eccentric inertia of parts clamped by the tool during rotation is eliminated, the service life of a machine tool is prolonged, the clamping speed of the soot blower lifting valve is high, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing equipment for lifting valves, and particularly relates to a lathe fixture for the flange surface of a lifting valve method. Background Technique

[0002] At present, in the production of soot blower lifting valves, it is necessary to fix the soot blower lifting valve on a lathe and use the lathe to machine the flange surface. The existing lifting valve fixture lacks a counterweight device, resulting in eccentric inertia during the rotation of the clamped soot blower lifting valve, unstable machining, and easy wear of the machine tool. Content of the Utility Model

[0003] The purpose of the utility model is to provide a lathe fixture for the flange surface of a lifting valve method in view of the above deficiencies.

[0004] The utility model includes a backrest disc, a lower support plate and a pair of counterweight blocks.

[0005] The lower support plate is installed at the lower part of the backrest disc. A positioning mandrel is arranged on the lower support plate. A pair of counterweight blocks are mirror-symmetrically distributed and installed at the upper part of the backrest disc. Bolt entry holes are opened on the counterweight blocks, threaded holes are opened at the bottom of the bolt entry holes, and side pressure bolts are installed in the threaded holes through the bolt entry holes.

[0006] A threaded hole is opened at the center of the positioning mandrel. The top pressure bolt passes through the top mounting hole of the lifting valve and is screwed into the threaded hole of the positioning mandrel to press and fix the lifting valve on the lower support plate from above.

[0007] A lifting valve ear seat accommodating area is formed between a pair of adjacent counterweight blocks, and a pair of side pressure bolts press and fix the lifting valve ear seat from the side.

[0008] Reinforcing rib plates are respectively arranged on both sides of the lower support plate.

[0009] The reinforcing rib plates are triangular, and the reinforcing rib plates are fixedly installed on the backrest disc.

[0010] The backrest disc is installed on the lathe spindle.

[0011] The positioning mandrel is cylindrical. A flange plate is arranged at the bottom of the positioning mandrel. A mandrel mounting hole is opened in the middle of the lower support plate. The positioning mandrel is located in the mandrel mounting hole, and the flange plate of the positioning mandrel is detachably installed at the bottom of the lower support plate through bolts.

[0012] The advantages of the utility model are as follows: A pair of counterweight blocks are added to eliminate the eccentric inertia during the rotation of the clamped parts of the fixture, extend the service life of the machine tool, quickly clamp the soot blower lifting valve, and reduce the labor intensity of the staff. Description of the Drawings

[0013] Figure 1 It is the front view structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic side view structure diagram of the present utility model.

[0015] Figure 3 It is a schematic top view structure diagram of the present utility model. Specific embodiments

[0016] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0018] It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0019] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed when in use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, in the description of the present invention, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0020] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "connected" are 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0021] As shown in the drawings, the present utility model includes a backrest plate 1, a lower support plate 2 and a pair of counterweights 3.

[0022] The lower support plate 2 is installed at the lower part of the backrest disc 1. A positioning mandrel 4 is provided on the lower support plate 2. A pair of counterweight blocks 3 are installed symmetrically at the upper part of the backrest disc 1. A bolt entry hole 5 is formed on the counterweight block 3. A threaded hole is formed at the inner bottom of the bolt entry hole 5. The side pressure bolt 6 passes through the bolt entry hole 5 and is installed in the threaded hole.

[0023] A threaded hole is formed at the center of the positioning mandrel 4. The top pressure bolt 7 passes through the mounting hole at the top of the lifting valve and is screwed into the threaded hole of the positioning mandrel 4, pressing and fixing the lifting valve on the lower support plate 2 from above.

[0024] A lifting valve ear seat accommodation area 9 is formed between a pair of adjacent counterweight blocks 3. A pair of side pressure bolts 6 press and fix the lifting valve ear seat from the side.

[0025] Reinforcing rib plates 8 are respectively arranged on both sides of the lower support plate 2.

[0026] The reinforcing rib plate 8 is triangular. The reinforcing rib plate 8 is fixedly installed on the backrest disc 1. The backrest disc 1 and the lower support plate 2 are reinforced through the reinforcing rib plate 8.

[0027] The backrest disc 1 is installed on the lathe spindle.

[0028] The positioning mandrel 4 is cylindrical. A flange is provided at the bottom of the positioning mandrel 4. A mandrel mounting hole is formed in the middle of the lower support plate 2. The positioning mandrel 4 is located in the mandrel mounting hole. The flange of the positioning mandrel 4 is detachably installed at the bottom of the lower support plate 2 through bolts.

[0029] Embodiment 1: The staff fixes the backrest disc 1 on the lathe spindle 101, places the lifting valve 100 on the lower support plate 2, inserts the positioning mandrel 4 into the bottom feed port of the lifting valve 100 to center and position the lifting valve 100. The top pressure bolt 7 passes through the mounting hole at the top of the lifting valve and is screwed into the threaded hole of the positioning mandrel 4, pressing and fixing the lifting valve on the lower support plate 2 from above. Insert a pair of side pressure bolts 6 into the corresponding bolt entry holes 5, screw the side pressure bolts 6 into the threaded holes, and the end of the side pressure bolt 6 extends into the lifting valve ear seat accommodation area 9 to press and fix the ear seat of the lifting valve 100 from both sides. After the clamping is completed, the method flange surface of the lifting valve 100 can be machined. After machining, loosen the side pressure bolt 6 and the top pressure bolt 7 to remove the lifting valve 100. The eccentric inertia of the fixture clamping parts during rotation is eliminated through the counterweight block 3 to prevent the wear of the machine tool.

Claims

1. A clamping fixture for facing the flange surface of a lift valve, characterized in that It includes a backrest plate (1), a lower support plate (2) and a pair of counterweight blocks (3). The lower support plate (2) is installed at the lower part of the backrest plate (1). A positioning mandrel (4) is provided on the lower support plate (2). A pair of counterweight blocks (3) are installed symmetrically at the upper part of the backrest plate (1). A bolt entry hole (5) is formed on the counterweight block (3). A threaded hole is formed at the inner bottom of the bolt entry hole (5). A side pressure bolt (6) passes through the bolt entry hole (5) and is installed in the threaded hole.

2. The fixture for turning the method flange surface of the lift valve according to claim 1, wherein A threaded hole is formed at the center of the positioning mandrel (4). A top pressure bolt (7) passes through the mounting hole at the top of the lift valve and is screwed into the threaded hole of the positioning mandrel (4) to tightly fix the lift valve on the lower support plate (2) from above.

3. The clamping fixture for the flange surface of the lift valve method according to claim 1, wherein A lift valve ear seat accommodation area (9) is formed between a pair of adjacent counterweight blocks (3). A pair of side pressure bolts (6) tightly fix the lift valve ear seat from the side.

4. A fixture for facing the flange surface of a lift valve according to claim 1, characterized in that, Reinforcing rib plates (8) are respectively arranged on both sides of the lower support plate (2).

5. The clamping fixture for the valve method flange surface according to claim 4, characterized in that, The reinforcing rib plates (8) are triangular. The reinforcing rib plates (8) are fixedly installed on the backrest plate (1).

6. A clamping fixture for the valve method flange surface of claim 1, wherein, The backrest plate (1) is installed on the lathe spindle.

7. A clamping fixture for the flange surface of a lifting valve method according to claim 1, characterized in that, The positioning mandrel (4) is cylindrical. A flange plate is arranged at the bottom of the positioning mandrel (4). A mandrel mounting hole is formed in the middle of the lower support plate (2). The positioning mandrel (4) is located in the mandrel mounting hole. The flange plate of the positioning mandrel (4) is detachably installed at the bottom of the lower support plate (2) through bolts.

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