Universal clamp for tee joint and four-way joint

Abstract

The utility model discloses a universal fixture for a three-way joint and a four-way joint, and relates to the technical field of fixtures, the universal fixture comprises a fixing plate connected with a three-jaw chuck of a lathe through a mandrel; the base is arranged on the fixing plate and comprises a first base body and a second base body which are oppositely connected, and a rotary driving assembly is arranged in the first base body and the second base body; the turntable is driven by the rotary driving assembly; the lower clamp is arranged on the turntable and is locked through a locking mechanism; the upper clamp is connected to the lower clamp through a plurality of bolts, a mounting channel is formed between the lower clamp and the upper clamp, various three-way pipes and four-way pipes can be clamped, one clamp can clamp the three-way pipes and the four-way pipes, clamp replacement is reduced, and the clamp utilization rate is increased.

Description

Technical Field

[0001] The present application relates to the technical field of clamps, and in particular to a universal clamp for tees and crosses. Background Art

[0002] Tees and crosses are the main connectors of pipe connectors, and are mainly used at the location where the main pipe is to branch, so as to connect or partially separate multiple pipes. After the tees and crosses are formed, the pipe ends must be beveled using a lathe. However, in the prior art, both the tees and crosses require special clamps for clamping, which not only increases the cost of the clamps, but also occupies a large space, and requires the replacement of the clamps, which not only reduces work efficiency, but also wastes a lot of time replacing the clamps.

[0003] Therefore, it is necessary to improve the existing clamps and use one clamp to simultaneously meet the clamping requirements of the tee and the cross. Utility Model Content

[0004] In view of this, the present application provides a universal clamp for tees and crosses, which can meet the clamping requirements of tees and crosses to solve the technical problem of poor universality of existing clamps.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A universal clamp for tees and crosses, comprising:

[0007] A fixed plate, the fixed plate being connected to a three-jaw chuck of a lathe via a mandrel;

[0008] A base disposed on the fixed plate, the base comprising a first base body and a second base body connected relatively to each other, a rotation drive assembly being disposed in the first base body and the second base body;

[0009] The rotating disk is driven to rotate by the rotating drive assembly;

[0010] A lower clamp disposed on the turntable and locked by a locking mechanism;

[0011] An upper clamp is connected to the lower clamp by a plurality of bolts, and an installation channel for clamping a tee or a cross is formed between the lower clamp and the upper clamp.

[0012] Furthermore, the installation channel includes a lower cross channel arranged on the lower fixture and an upper cross channel arranged on the upper fixture, and the lower cross channel is matched with the upper cross channel up and down.

[0013] Furthermore, the upper cross channel and the lower cross channel are symmetrical in vertical direction.

[0014] Furthermore, the lower fixture is provided with a plurality of first screw holes, and the upper fixture is provided with through holes matching the first screw holes.

[0015] Furthermore, the rotary drive assembly comprises:

[0016] a rotating shaft pivotally connected to the first seat body;

[0017] A hand wheel connected to one end of the rotating shaft;

[0018] A transmission assembly connected to the other end of the rotating shaft;

[0019] A transmission shaft is connected between the transmission assembly and the turntable.

[0020] Furthermore, the rotating shaft is limited by a limiting component connected to the hand wheel, and the limiting component includes:

[0021] a locking plate connected to the first seat body;

[0022] A pull ring, on which at least two locking rods are evenly distributed, and the locking rods can pass through the hand wheel and then be inserted into the locking disk to fix the hand wheel;

[0023] A tension spring is connected between the pull ring and the locking disk.

[0024] Furthermore, a plurality of T-shaped sliding blocks slidably connected to the first seat body and the second seat body are provided at the bottom of the turntable.

[0025] Furthermore, the locking mechanism comprises:

[0026] rotating a cam disposed in the rotating disk;

[0027] A pair of extrusion plates, the pair of extrusion plates are symmetrically pressed against two sides of the cam, and the pair of extrusion plates are slidably arranged in the rotating disk;

[0028] A pair of clamping strips are connected to the corresponding extrusion plates, and the pair of clamping strips can be clamped at both ends of the lower clamp.

[0029] Furthermore, the locking mechanism further comprises:

[0030] A pair of sliding frames symmetrically arranged in the rotating disk, wherein the extrusion plate is slidably connected to the corresponding sliding frames;

[0031] A pair of compression springs are sleeved on corresponding sliding frames, and the compression springs are abutted between the sliding frames and the corresponding extrusion plates.

[0032] Furthermore, the installation channel also includes a first vertical channel that penetrates the middle portion of the lower cross channel and a second vertical channel that penetrates the middle portion of the upper cross channel, and the first vertical channel and the second vertical channel are coaxially arranged.

[0033] It can be seen from the above technical solution that the advantages of the utility model are:

[0034] 1. A cross-shaped installation channel is provided between the upper clamp and the lower clamp in the present application, so that both three-way pipe fittings and four-way pipe fittings can be installed therein, reducing the number of times the clamp needs to be replaced when processing different pipe fittings, which not only improves the installation efficiency, but also reduces the installation error, thereby achieving higher processing accuracy and better processing quality.

[0035] 2. A base is provided in the present application, and the base is composed of a first base body and a second base body, so that a rotary drive assembly can be installed inside. The rotary drive assembly can drive the turntable to rotate, and then drive the lower clamp and the upper clamp to rotate. The rotation makes it easy to adjust the processing position of the present application, so as to facilitate the beveling of different pipe openings of tees or crosses, thereby improving work efficiency.

[0036] 3. A locking mechanism is also provided in the present application, which can realize the installation between the lower clamp and the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0038] Figure 1 This is a schematic diagram of the structure of this application.

[0039] Figure 2 This is a top view of the base of the present application.

[0040] Figure 3 It is a structural schematic diagram of the rotary drive assembly, the second seat body and the turntable of the present application.

[0041] Figure 4 It is a top view of the rotary drive assembly of the present application.

[0042] Figure 5 for Figure 4 Top view of the locking disk in FIG.

[0043] Figure 6 for Figure 4 Top view of the handwheel in .

[0044] Figure 7 for Figure 3 A partial enlarged view of point A.

[0045] Figure 8 for Figure 3 A partial enlarged view of point B.

[0046] Fig. 9 for Figure 3 A partial enlarged view of point C.

[0047] Fig.10 This is a schematic diagram of the structure of the lower clamp of the present application.

[0048] Fig.11 This is a schematic diagram of the structure of the upper clamp of the present application.

[0049] Fig.12 This is a side view of the upper clamp, lower clamp, and pipe fitting of the present application.

[0050] Fig.13 This is a schematic diagram of the three-dimensional structure of the lower clamp of the present application.

[0051] Description of reference numerals: 1- spindle; 2- fixing plate; 3- base; 31- first seat body; 311- first receiving groove; 312- first semicircular slide groove; 32- second seat body; 321- second receiving groove; 322- second semicircular slide groove; 33- rotary drive assembly; 331- locking plate; 3311- locking groove; 332- hand wheel; 3321- through hole; 333- rotating shaft; 334- pull ring; 335- locking rod; 336- tension spring; 337- driving bevel gear; 338- driven bevel gear; 339-transmission shaft; 4-turntable; 41-T-shaped slider; 42-protrusion; 5-locking mechanism; 51-cam; 511-knob; 52-extrusion plate; 53-push rod; 54-sliding frame; 55-compression spring; 56-clip strip; 6-lower clamp; 61-lower cross channel; 611-first vertical channel; 62-second clamp; 63-first screw hole; 64-clip groove; 7-upper clamp; 71-upper cross channel; 711-second vertical channel; 72-first clamp; 73-through hole; 8-bolt. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the implementation modes and the accompanying drawings. Here, the illustrative implementation modes and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0053] refer to Figures 1 to 13 ,like Figure 1As shown, the present embodiment provides a universal clamp for tees and crosses, the universal clamp comprising: a fixed plate 2, a base 3, a turntable 4, a lower clamp 6, and an upper clamp 7. The fixed plate 2 is L-shaped, and the fixed plate 2 is connected to the three-jaw chuck of a lathe through a mandrel 1 to fix the present application on the lathe. In order to facilitate the processing of tees or crosses with different structures, two mandrels 1 are installed on the fixed plate 2. In this way, by connecting the mandrel 1 with the three-jaw chuck at different positions, and adjusting the position of the tee or cross on the lower clamp 6 and the upper clamp 7, the clamping of tees or crosses with various structures can be realized. Using a set of clamps to clamp tees or crosses with various structures can save the cost of the clamp; the base 3 is installed on the On the fixed plate 2, the base 3 includes a first seat body 31 and a second seat body 32 that are relatively connected. The first seat body 31 and the second seat body 32 are positioned by two positioning pins. The split structure of the first seat body 31 and the second seat body 32 is convenient for processing other structures on the first seat body 31 and the second seat body 32. A rotation drive assembly 33 is arranged in the first seat body 31 and the second seat body 32; the turntable 4 is driven to rotate by the rotation drive assembly 33; the lower clamp 6 is installed on the turntable 4 and is locked by a locking mechanism 5; the upper clamp 7 is connected to the lower clamp 6 by a plurality of bolts 8, and the lower clamp 6 and the upper clamp 7 together form an installation channel that can clamp a three-way or four-way.

[0054] like Figure 2 , Fig.10 , Fig.11 and Fig.13 As shown, the installation channel includes a lower cross channel 61, an upper cross channel 71, a first vertical channel 611 and a second vertical channel 711. The lower cross channel 61 and the first vertical channel 611 are opened on the lower clamp 6, the upper cross channel 71 and the second vertical channel 711 are opened on the upper clamp 7, the second vertical channel 711 passes through the center of the upper cross channel 71, the first vertical channel 611 passes through the center of the lower cross channel 61, and the first vertical channel 611 and the second vertical channel 711 are coaxially arranged.

[0055] Preferably, the upper cross channel 71 and the lower cross channel 61 are symmetrical in the upper and lower directions, and both are arranged in a cross shape. The upper cross channel 71 cooperates with the lower cross channel 61 to clamp a three-way or four-way. In combination with the use of the first vertical channel 611 and the second vertical channel 711, the four-way that is perpendicular to each other in three directions can be clamped. Therefore, the clamp has a wider range of applications.

[0056] Since the diameters of the tee or cross pipes are different, in order to clamp pipes of different diameters, jackets of different diameters can be installed on the lower cross channel 61, the upper cross channel 71, the first vertical channel 611 and the second vertical channel 711. The jackets are designed with different diameters and connected to the channels by screws, so the clamp has a wider range of applications.

[0057] like Fig.12 and Fig.13 As shown, a first jacket 72 is disposed in the upper cross channel 71 , and a second jacket 62 is disposed in the lower cross channel 61 . The jacket is the first jacket 72 or the second jacket 62 .

[0058] like Fig.10 and Fig.11 As shown, the lower clamp 6 is further provided with four first screw holes 63 , and the upper clamp 7 is further provided with four through holes 73 . The first screw holes 63 cooperate with the through holes 73 to assemble the bolts 8 , thereby fastening the upper clamp 7 to the lower clamp 6 .

[0059] Preferably, in order to facilitate installation and removal, the bolt 8 is a butterfly bolt.

[0060] like Figure 2 , Figure 3 and Figure 4 As shown, the rotating drive assembly 33 includes: a rotating shaft 333, a hand wheel 332, a transmission assembly and a transmission shaft 339, the rotating shaft 333 is pivotally connected to the first seat body 31, and the front end of the rotating shaft 333 passes through the first seat body 31 and extends to the second seat body 32; the hand wheel 332 is connected to the rear end of the rotating shaft 333; the transmission assembly is connected to the front end of the rotating shaft 333, and the transmission assembly is located in the second seat body 32; the transmission shaft 339 is connected between the transmission assembly and the turntable 4, and the bottom of the transmission shaft 339 is rotatably arranged in the second accommodating groove 321 of the second seat body 32 through a bearing.

[0061] In the embodiment of the present application, the transmission assembly includes a driving bevel gear 337 and a driven bevel gear 338 that mesh with each other, the driving bevel gear 337 is connected to the front end of the rotating shaft 333, and the driven bevel gear 338 is connected to the transmission shaft 339, and the driving bevel gear 337 and the driven bevel gear 338 are both located in the second accommodating groove 321.

[0062] like Figure 4As shown, the rotating shaft 333 is restricted by a limiting assembly connected to the hand wheel 332, and the limiting assembly includes: a locking disk 331, a pull ring 334 and a tension spring 336, and the locking disk 331 is connected to the rear side of the first seat body 31; two locking rods 335 are evenly distributed on the pull ring 334, and the two locking rods 335 are symmetrically arranged. The locking rods 335 can pass through the hand wheel 332 and then be inserted into the locking disk 331 to fix the hand wheel 332.

[0063] like Figure 5 As shown, four locking grooves 3311 are provided on the locking disk 331, and the angles between the four locking grooves 3311 are all 90°. Therefore, the angle of each rotation of the hand wheel 332 is an integer multiple of 90°. For a tee or a cross, the pipe mouth can be beveled by at least one rotation.

[0064] like Figure 6 As shown, the hand wheel 332 is provided with two through holes 3321 , and the two locking rods 335 can pass through the two through holes 3321 and then be inserted into the corresponding locking grooves 3311 . The two through holes 3321 are used to accommodate the locking rods 335 passing through.

[0065] Preferably, the planes of the locking groove 3311 and the through hole 3321 are both square, which not only facilitates the insertion of the locking rod 335 but also increases the limiting effect of the locking rod 335 on the locking plate 331 .

[0066] When the position of the three-way or four-way pipe opening needs to be adjusted, the pull ring 334 is pulled backward so that the pair of locking rods 335 are disengaged from the locking plate 331. At this time, the tension spring 336 is stretched, the pull ring 334 is loosened, and the tension spring 336 is reset to drive the pair of locking rods 335 to move forward. However, since the position of the locking rod 335 has been rotated, the locking rod 335 can only be held against the rear end surface of the locking plate 331, and the tension spring 336 is not completely reset. Then, the hand wheel 332 is turned to make the rotating shaft 333 drive the transmission shaft 339 to rotate through the active bevel gear 337 and the driven bevel gear 338, so that the rotating disk 4 rotates synchronously. After rotating 90°, the locking rod 335 and the locking groove 3311 just correspond to each other front and back, and the reset effect of the tension spring 336 will push the locking rod 33 again. 5 moves forward, so that the locking rod 335 will be inserted into the locking groove 3311, so that the turntable 4, the lower clamp 6, the upper clamp 7, the tee or the cross will rotate 90° synchronously, and the corresponding other pipe mouth can be beveled. When the pipe mouth is processed later, the operation method is the same as above. The locking rod 335 cooperates with the locking groove 3311 to make the turntable 4 able to rotate at a controllable angle, which is convenient for quickly adjusting the position of the pipe mouth to be turned on the tee or the cross relative to the turning tool, making the position adjustment more convenient and efficient. Due to the different structures of the tee or the cross, some pipe mouth processing requires a three-jaw chuck to clamp another core shaft 1, or requires a secondary clamping of the tee or the cross to realize the beveling processing of all pipe mouths, so that a set of clamps can meet the clamping of tees and crosses with different structures.

[0067] like Figure 7 As shown, a plurality of T-shaped sliders 41 are disposed at the bottom of the turntable 4 , and the plurality of T-shaped sliders 41 are slidably disposed in the first seat body 31 and the second seat body 32 .

[0068] like Figure 2 As shown, a first receiving groove 311 and a first semicircular slide groove 312 are provided on the top of the first seat body 31, and a second receiving groove 321 and a second semicircular slide groove 322 are provided on the top of the second seat body 32. The first receiving groove 311 and the second receiving groove 321 are symmetrical front to back and are used to accommodate the rotating drive assembly 33. The first semicircular slide groove 312 and the second semicircular slide groove 322 are located on the outside of the first receiving groove 311 and the second receiving groove 321. The first semicircular slide groove 312 and the second semicircular slide groove 322 are used to cooperate with the T-shaped slider 41 for circular sliding. The turntable 4 is supported by the T-shaped slider 41, which can make the turntable 4 rotate more smoothly.

[0069] The first semicircular sliding groove 312 and the second semicircular sliding groove 322 are both T-shaped grooves.

[0070] like Figure 8 and Fig. 9As shown, the locking mechanism 5 includes: a cam 51, a pair of extrusion plates 52 and a pair of clamping strips 56. The cam 51 is rotatably arranged in the turntable 4 through a connecting shaft; a pair of extrusion plates 52 are symmetrically pressed on both sides of the cam 51, and a pair of extrusion plates 52 are slidably arranged in the turntable 4; the clamping strips 56 are connected to the corresponding extrusion plates 52, and a pair of clamping strips 56 can be clamped at both ends of the lower clamp 6 to fix the turntable 4.

[0071] like Figure 1 As shown, the front end of the connecting shaft of the cam 51 passes through the front end surface of the turntable 4 and is then equipped with a knob 511 for easy operation.

[0072] like Figure 8 As shown, the locking mechanism 5 also includes: a pair of sliding frames 54 and a pair of compression springs 55. The pair of sliding frames 54 are symmetrically arranged in the turntable 4, and the extrusion plate 52 is slidably connected with the corresponding sliding frames 54; the compression spring 55 is sleeved on the corresponding sliding frame 54, and the compression spring 55 is supported between the sliding frame 54 and the corresponding extrusion plate 52.

[0073] like Fig. 9 As shown, the inner end of the turntable 4 has a U-shaped boss 42, the lower clamp 6 is placed on the boss 42, and the clamping strip 56 is connected to the corresponding extrusion plate 52 through the push rod 53. The clamping strip 56 is L-shaped, and the upper end of the clamping strip 56 can be inserted into the boss 42 and then inserted into the slot 64 opened on the side of the lower clamp 6. The pair of slots 64 are symmetrical to each other, which can enable the pair of clamping strips 56 to have a better locking effect on the lower clamp 6.

[0074] In the embodiment of the present application, the cam 51 is in the shape of a long strip. When the knob 511 is rotated counterclockwise, the cam 51 rotates counterclockwise to push the extrusion plates 52 on both sides to move outward, so that the compression spring 55 is squeezed and the pair of clamping strips 56 move away from each other. At this time, the lower clamp 6 can be placed on the protrusion 42, and the knob 511 is released. The pair of compression springs 55 are reset so that the pair of clamping strips 56 are inserted into the lower clamp 6 again, thereby fixing the lower clamp 6.

[0075] Preferably, in order to increase the processing range, a core shaft 1 is provided on the left side and bottom of the fixed plate 2. The core shaft 1 in different directions is clamped by a three-jaw chuck, and the tee or cross is clamped for the second time during processing, which can facilitate the processing of bevels on pipe openings in different directions.

[0076] Working principle: place the tee or cross to be processed on the second clamping sleeve 62, press the upper clamping block 7 onto the tee or cross, and lock the upper clamping block 7 with the lower clamping block 6 by bolts 8, then connect the present application to the three-jaw chuck of the lathe through the core shaft 1, start the lathe, and drive the clamp to rotate through the three-jaw chuck to be able to bevel the pipe opening on the right side, then stop the lathe, pull the pull ring 334 backward, and turn the hand wheel 332 to adjust the position of the other pipe opening of the tee or cross, so that all pipe openings in the horizontal direction can be beveled, and for the vertical pipe openings, the bottom core shaft 1 can be connected to the three-jaw chuck to achieve the pipe opening beveling processing, and for some tees or crosses, the pipe opening beveling processing can be achieved through secondary clamping.

[0077] Therefore, the present application can clamp a variety of tees and crosses, and one clamp can clamp both tees and crosses, which reduces the need to replace clamps, improves clamp utilization, and saves clamp costs.

[0078] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A universal clamp for tees and crosses, characterized in that: include: A fixed plate (2), the fixed plate (2) being connected to a three-jaw chuck of a lathe via a mandrel (1); A base (3) disposed on the fixing plate (2), the base (3) comprising a first base body (31) and a second base body (32) which are relatively connected, and a rotation drive assembly (33) is disposed inside the first base body (31) and the second base body (32); The rotating disk (4) is driven to rotate by the rotating drive assembly (33); A lower clamp (6) disposed on the rotating disk (4) and locked by a locking mechanism (5); An upper clamp (7) is connected to the lower clamp (6) via a plurality of bolts (8), and a mounting channel for clamping a three-way or a four-way is formed between the lower clamp (6) and the upper clamp (7).

2. The universal clamp for tees and crosses according to claim 1, characterized in that: The installation channel comprises a lower cross channel (61) provided on the lower fixture (6) and an upper cross channel (71) provided on the upper fixture (7), wherein the lower cross channel (61) and the upper cross channel (71) are matched up and down.

3. The universal clamp for tees and crosses according to claim 2, characterized in that: The upper cross channel (71) and the lower cross channel (61) are symmetrical in vertical direction.

4. The universal clamp for tees and crosses according to claim 1, characterized in that: The lower clamp (6) is also provided with a plurality of first screw holes (63), and the upper clamp (7) is also provided with through holes (73) matching the first screw holes (63).

5. The universal clamp for tees and crosses according to claim 1, characterized in that: The rotary drive assembly (33) comprises: A rotating shaft (333) pivotally connected to the first seat body (31); A hand wheel (332) connected to one end of the rotating shaft (333); a transmission assembly connected to the other end of the rotating shaft (333); A transmission shaft (339) connected between the transmission assembly and the rotating disk (4).

6. The universal clamp for tees and crosses according to claim 5, characterized in that: The rotating shaft (333) is restricted by a restriction component connected to the hand wheel (332), and the restriction component comprises: A locking plate (331) connected to the first seat body (31); a pull ring (334), wherein at least two locking rods (335) are evenly distributed on the pull ring (334), and the locking rods (335) can pass through the hand wheel (332) and then be inserted into the locking disk (331) to achieve the fixing of the hand wheel (332); A tension spring (336) connected between the pull ring (334) and the locking disk (331).

7. The universal clamp for tees and crosses according to claim 1, characterized in that: A plurality of T-shaped sliding blocks (41) are provided at the bottom of the rotating disk (4) and are slidably connected to the first seat body (31) and the second seat body (32).

8. The universal clamp for tees and crosses according to claim 1, characterized in that: The locking mechanism (5) comprises: Rotating a cam (51) disposed in the rotating disk (4); A pair of extrusion plates (52), the pair of extrusion plates (52) symmetrically pressed against two sides of the cam (51), and the pair of extrusion plates (52) slidably arranged in the rotating disk (4); A pair of clamping strips (56) each connected to the corresponding extrusion plates (52), wherein the pair of clamping strips (56) can be clamped at two ends of the lower clamp (6).

9. The universal clamp for tees and crosses according to claim 8, characterized in that: The locking mechanism (5) further comprises: A pair of sliding frames (54) symmetrically arranged in the rotating disk (4), the extrusion plate (52) being slidably connected to the corresponding sliding frames (54); A pair of compression springs (55) are sleeved on corresponding sliding frames (54), wherein the compression springs (55) are supported between the sliding frames (54) and the corresponding extrusion plates (52).

10. The universal clamp for tees and crosses according to claim 2, characterized in that: The installation channel further comprises a first vertical channel (611) penetrating the middle of the lower cross channel (61) and a second vertical channel (711) penetrating the middle of the upper cross channel (71), wherein the first vertical channel (611) and the second vertical channel (711) are coaxially arranged.

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