PSP electromagnetic induction double-hot-melting pipe fitting electromagnetic welding equipment

Abstract

The utility model relates to the technical field of electromagnetic welding equipment, in particular to PSP electromagnetic induction double-hot-melting pipe fitting electromagnetic welding equipment which comprises a main machine, a take-up reel on the right side of the main machine and a protective cover on the rear side of the main machine. A spring, a ratchet wheel, a first disc and a second disc are sequentially arranged in the disc shell from left to right; the protective cover comprises a shell and a base inserted into the bottom of the shell. A clamp used for welding is arranged on the top of the support. According to the electromagnetic welding equipment, one end of a clockwork spring is fixed to a left cover, the other end of the clockwork spring is connected with a ratchet wheel, a cable is pulled to rotate the ratchet wheel to stretch the clockwork spring, a pawl falls into a ratchet wheel tooth groove and is prevented from rotating reversely, a shifting rod is shifted upwards to enable the pawl to be separated from the ratchet wheel, the ratchet wheel can rotate automatically to drive a take-up shaft to take up, and the knotting influence caused by manual winding is reduced; the bottom of the clamp is matched with the shape of the groove, the high-temperature clamp after welding is stored in the protective cover, and the influence that an operator is scalded due to mistaken touch caused by high temperature is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic welding equipment technology, specifically to an electromagnetic welding equipment for PSP electromagnetic induction dual-heat melt pipe fittings. Background Technology

[0002] PSP steel-plastic composite pipes are widely used due to their combination of the excellent properties of steel and plastic. However, traditional hot-melt butt welding and electrofusion connection processes have limitations such as low efficiency, complex operation, and uncontrollable quality. Electromagnetic induction double hot-melt welding equipment heats the steel pipe layer with electromagnetic induction and simultaneously melts the plastic layer, and combines innovations such as dynamic positioning, intelligent monitoring, and portable design.

[0003] Utility model publication CN206912482U discloses a high-frequency welding device for steel-plastic composite pipes, including a high-frequency generator and a heater. The high-frequency generator includes a chassis, a radiator installed at the bottom of the chassis, a main circuit board on the top of the radiator, and a rectifier module, an inverter module, and a microcontroller control module arranged on the main circuit board. The front panel of the chassis is equipped with a welding parameter display screen, a start / stop button, an output port, and a power switch, and a cooling fan is fixedly installed on the rear panel of the chassis. The heater includes a welding fixture and an identification module, and the welding fixture is connected to the output port through a welding wire.

[0004] In the above technical solutions, high-frequency welding equipment can achieve welding after the pipeline is installed by electromagnetic thermofusion connection. By setting multiple output ports on the high-frequency welding equipment, multiple connection points of different specifications can be welded at the same time, which greatly reduces the impact of human factors in traditional construction and improves welding quality and construction efficiency. However, the cable storage before and after use requires manual winding and is easy to get confused and knotted. After use, the clamps are placed in the open air, which is easy to get dusty and the high temperature clamps can easily burn the operators. Utility Model Content

[0005] The purpose of this invention is to provide a PSP electromagnetic induction double hot melt pipe fitting electromagnetic welding equipment to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A PSP electromagnetic induction double hot melt pipe fitting electromagnetic welding equipment includes a main unit, a take-up reel on the right side of the main unit and a protective cover on the rear side of the main unit. The take-up reel includes a reel shell and a left cover installed on the left side of the reel shell. Inside the reel shell, from left to right, there are a spring, a ratchet, a first reel plate and a second reel plate. A pawl corresponding to the ratchet tooth is provided above the ratchet, a lever is provided at the top of the pawl, and a spring is provided at the bottom of the pawl.

[0008] The protective cover includes an outer shell and a base that is inserted into the bottom of the outer shell. The base is provided with a detachable bracket, and the top of the bracket is provided with a clamp for welding. The bracket includes two first U-shaped plates and a second U-shaped plate inside the first U-shaped plates.

[0009] Preferably, the pawl is connected to the first disc via a rotating shaft, and a fixing post is provided on the left side of the first disc near the edge. One end of the spring is connected to the pawl, and the other end is connected to the fixing post. The disc shell has a square hole on the upper left side, corresponding to the lever, and a circular opening on the lower side.

[0010] In this invention, the pawl corresponds to the ratchet. When the pawl falls into the ratchet teeth, it prevents the ratchet from rotating in the opposite direction, achieving unidirectional motion control. The position of the pawl is controlled by operating a lever. Pushing the lever upwards disengages the pawl from the ratchet teeth, allowing the ratchet to rotate freely. Lowering the lever re-engages the pawl with the ratchet teeth, restricting the ratchet from rotating in the opposite direction. A spring provides tension to the pawl, ensuring it is tightly engaged with the ratchet teeth. This guarantees that the pawl will not easily disengage from the teeth during normal operation, ensuring the reliability of the mechanism. A square hole allows the lever to pass through, enabling operation from outside the housing and limiting the lever's swing position. A circular hole allows cables inside the housing to pass through.

[0011] Preferably, one end of the outer ring of the mainspring is bonded and fixed to the left cover, and one end of the inner ring is bonded and fixed to the ratchet. A round shaft is provided at the center of the left side of the ratchet, the length of which matches the thickness of the mainspring. The round shaft is rotatably connected to the center of the left cover. An opening is provided at the center of the first disc, and a winding shaft is provided at the center of the left side of the second disc. The winding shaft passes through the first disc and is welded and fixed to the center of the ratchet. The ratchet is rotatably connected to the first disc. The outer ring of the first disc is bonded and fixed to the inner wall of the left cover, and the left side of the inner wall of the disc is bonded and fixed to the outer side of the left cover.

[0012] In this invention, when an external force is applied to the ratchet to make it rotate, the spring will deform and store elastic potential energy; when the external force is removed, the spring releases the elastic potential energy and drives the ratchet to rotate in the opposite direction. The stability of the structure is ensured by setting a round shaft, and the cable can be wound on the winding shaft between the first and second discs. The disc shell can provide protection for the internal parts and cables.

[0013] Preferably, the base has a groove that matches the shape of the bottom of the clamp and the bracket. One side of the groove has a wedge that is triangular in shape, and one side of the clamp has a groove that corresponds to the shape of the wedge.

[0014] In this invention, the groove enables precise positioning and stable support of the clamp, ensuring that the clamp and bracket do not shift during storage and improving the overall stability of the equipment. The inclined groove and the inclined block work together to further enhance the stability of the clamp placed on the base under the action of friction.

[0015] Preferably, the bracket includes two first U-shaped plates and a second U-shaped plate inside the first U-shaped plates. The ends of the first U-shaped plates and the ends of the second U-shaped plates are rotatably connected by a rotating shaft. The bottom surface inside the first U-shaped plates is provided with several limiting grooves, and the inside of the second U-shaped plates is provided with a support plate.

[0016] In this invention, the first U-shaped plate and the second U-shaped plate cooperate. After the first U-shaped plate and the second U-shaped plate are adjusted to a suitable angle, one end of the support plate cooperates with the limiting groove to achieve angle support and fixation.

[0017] Preferably, one end of the support plate is rotatably connected to the middle of the second U-shaped plate via a pivot, the other end of the support plate is engaged with a limiting groove, two connecting plates are provided between the two first U-shaped plates, and the connecting plates are parallel front to back, the left and right ends of the connecting plates are welded and fixed to the front and rear ends of the first U-shaped plates, and the clamp and bracket are fixed by screws.

[0018] In this invention, the connecting plate connects the two first U-shaped plates, increasing the stability of the overall structure.

[0019] Preferably, a storage component is provided below the main unit. The storage component includes a box and a drawer inside the box. A panel is provided on the front side of the drawer, and a latch is provided inside the panel.

[0020] In this invention, the box body provides support, and the drawer provides storage, facilitating the storage and retrieval of items. The latch includes a lock shell with an opening on the upper left side. An outer hook is located inside the lock shell, passing through the lock shell on the left. An opening is located in the middle of the outer hook, and a groove is located on the right side of the outer hook, containing a cylinder. A first connecting block is located below the outer hook, with its upper end rotatably connected to the outer hook. A second connecting block is located at the other end of the first connecting block, with its middle section rotatably connected to the first connecting block. A round hole is located at the upper end of the second connecting block, containing a cylinder, and the round hole and cylinder are rotatably connected. A pull block is located below the second connecting block, and an inner hook is located inside the box body corresponding to the outer hook. Pulling the pull block moves the second connecting block, causing the outer hook to slide forward. The outer hook engages with the opening in the lock shell, enabling the locking and unlocking of the outer and inner hooks. The latch prevents the drawer from being opened accidentally.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. In this utility model, one end of the spring is fixed to the left cover, and the other end is connected to the ratchet. When the cable needs to be unwound, pulling the cable rotates the ratchet and stretches the spring. The spring stores elastic potential energy, and the pawl falls into the ratchet tooth groove, preventing it from reversing. When the cable needs to be retracted, the lever is pushed upward to disengage the pawl from the ratchet. At this time, the ratchet can rotate on its own to drive the take-up shaft to retract the cable, reducing the impact of knots caused by manual winding. The bottom of the clamp and bracket matches the shape of the groove, which can achieve stable placement of the clamp. The cooperation of the inclined groove and the inclined block ensures that the clamp and bracket are fixed in position when stored. After welding, the high-temperature clamp is stored in the protective cover to avoid the operator being burned by accidental contact with the high temperature.

[0023] 2. This utility model is equipped with a storage component, and the drawer realizes the storage function, which makes it easy to store and retrieve the stored items. The outer hook and the inner hook are separate. Pull the drawer outward to put the items into the storage component. When the drawer is closed, the inner hook and the outer hook are engaged to prevent the drawer from being opened accidentally. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the electromagnetic welding equipment of this utility model;

[0025] Figure 2 This is a schematic diagram of the back of the electromagnetic welding equipment of this utility model;

[0026] Figure 3 This is an exploded view of the take-up reel of this utility model;

[0027] Figure 4 This is a schematic diagram of the drawer latch structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the storage component structure of this utility model;

[0029] Figure 6 This is a schematic diagram showing the positions of the storage box and clamp of this utility model;

[0030] Figure 7 This is a schematic diagram showing the positions of the clamp and bracket of this utility model;

[0031] Figure 8 This is a schematic diagram of the clamp structure of this utility model.

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Main unit; 11. Handle;

[0034] 2. Protective cover; 21. Outer shell; 22. Base; 221. Groove; 222. Inclined block;

[0035] 3. Storage components; 31. Box body; 32. Drawer; 33. Panel; 34. Lock; 341. Inner hook; 342. Outer hook; 343. First connecting block; 344. Second connecting block; 345. Pull block; 346. Lock case;

[0036] 4. Take-up reel; 41. Left cover; 42. Mainspring; 43. Ratchet; 431. Pad; 432. Lever; 433. Spring; 44. First disc; 441. Fixing post; 45. Second disc; 46. Disc casing;

[0037] 5. Bracket; 51. First U-shaped plate; 52. Second U-shaped plate; 53. Support plate; 54. Limiting groove; 55. Connecting plate

[0038] 6. Fixture; 61. Inclined groove. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figures 1-8 This embodiment provides a technical solution:

[0041] An electromagnetic welding device for PSP electromagnetic induction double hot melt pipe fittings includes a main unit 1, a take-up reel 4 on the right side of the main unit 1, and a protective cover 2 on the rear side of the main unit 1. The take-up reel 4 includes a reel shell 46 and a left cover 41 installed on the left side of the reel shell 46. Inside the reel shell 46, from left to right, there are a spring 42, a ratchet 43, a first disc 44, and a second disc 45. Above the ratchet 43, there is a pawl 431 corresponding to the ratchet tooth. At the top of the pawl 431, there is a lever 432. At the bottom of the pawl 431, there is a spring 433. The pawl 431 is connected to the first disc 44 through a rotating shaft. Near the edge on the left side of the first disc 44, there is a fixing post 441. One end of the spring 433 is connected to the pawl 431, and the other end is connected to the fixing post 441. The reel shell 46 has a square hole near the upper left side, corresponding to the lever 432, and a circular opening near the lower side.

[0042] In this invention, the pawl 431 corresponds to the ratchet 43. When the pawl 431 falls into the ratchet teeth of the ratchet 43, it can prevent the ratchet 43 from rotating in the opposite direction, thus achieving unidirectional motion control. The position of the pawl 431 is controlled by operating the lever 432. Pushing the lever 432 upwards can disengage the pawl 431 from the ratchet teeth of the ratchet 43, at which point the ratchet 43 can rotate freely. Putting down the lever 432 allows the pawl 431 to re-engage with the ratchet teeth, restricting the ratchet 43 from rotating in the opposite direction. A spring 433 is provided to provide tension to the pawl 431, ensuring that the pawl 431 can tightly mesh with the ratchet teeth of the ratchet 43. This ensures that the pawl 431 will not easily disengage from the ratchet teeth under normal working conditions, thus ensuring the reliability of the mechanism. A square hole is provided so that the lever 432 can pass through, allowing operation of the lever 432 from outside the disc housing 46 and limiting the swing position of the lever 432. A circular hole is provided so that the cable inside the disc housing 46 can pass through.

[0043] Furthermore, one end of the outer ring of the mainspring 42 is bonded and fixed to the left cover 41, and one end of the inner ring is bonded and fixed to the ratchet 43. A round shaft is provided at the center of the left side of the ratchet 43. The length of the round shaft matches the thickness of the mainspring 42. The round shaft is rotatably connected to the center of the left cover 41. An opening is provided at the center of the first disc 44. A winding shaft is provided at the center of the left side of the second disc 45. The winding shaft passes through the first disc 44 and is welded and fixed to the center of the ratchet 43. The ratchet 43 is rotatably connected to the first disc 44. The outer ring of the first disc 44 is bonded and fixed to the inner wall of the left cover 41. The left side of the inner wall of the disc 46 is bonded and fixed to the outer side of the left cover 41.

[0044] In this invention, when an external force is applied to the ratchet 43 to make it rotate, the spring 42 will deform and store elastic potential energy; when the external force is removed, the spring 42 releases the elastic potential energy and drives the ratchet 43 to rotate in the opposite direction. The stability of the structure is ensured by setting a round shaft, and the cable can be wound on the winding shaft between the first disc 44 and the second disc 45. The disc shell 46 can provide protection for the internal parts and cables.

[0045] The base 22 is provided with a detachable bracket 5, and the top of the bracket 5 is provided with a welding clamp 6. The bracket 5 includes two first U-shaped plates 51 and a second U-shaped plate 52 within the first U-shaped plates 51. Preferably, the bracket 5 includes two first U-shaped plates 51 and a second U-shaped plate 52 within the first U-shaped plates 51. The ends of the first U-shaped plates 51 and the ends of the second U-shaped plates 52 are rotatably connected by a pivot. The bottom surface of the inner surface of each first U-shaped plate 51 is provided with several limiting grooves 54, and the inner surface of each second U-shaped plate 52 is provided with a support plate 53.

[0046] In this utility model, the first U-shaped plate 51 and the second U-shaped plate 52 cooperate with each other. After the first U-shaped plate 51 and the second U-shaped plate 52 are adjusted to a suitable angle, one end of the support plate 53 cooperates with the limiting groove 54 to achieve angle support and fixation.

[0047] Furthermore, one end of the support plate 53 is rotatably connected to the pivot in the middle of the second U-shaped plate 52, and the other end of the support plate 53 is engaged with the limiting groove 54. Two connecting plates 55 are provided in the middle of the two first U-shaped plates 51, and the connecting plates 55 are parallel to each other. The left and right ends of the connecting plates 55 are welded and fixed to the front and rear ends of the first U-shaped plates 51. The clamp 6 and the bracket 5 are fixed by screws.

[0048] In this invention, the connecting plate 55 connects the two first U-shaped plates 51, increasing the stability of the overall structure.

[0049] Specifically, the protective cover 2 includes an outer shell 21 and a base 22 that is inserted into the bottom of the outer shell 21. Preferably, the base 22 has a groove 221, and the groove 221 matches the bottom shape of the clamp 6 and the support 5. One side of the groove 221 has a wedge 222, which is triangular. One side of the clamp 6 has a groove 61, which corresponds to the shape of the wedge 222.

[0050] In this utility model, the groove 221 enables precise positioning and stable support of the clamp 6, ensuring that the clamp 6 and the bracket 5 do not shift when stored, thus improving the overall stability of the equipment. The inclined groove 61 cooperates with the inclined block 222, and under the action of friction, further enhances the stability of the clamp 6 placed on the base 22.

[0051] In addition, a storage component 3 is provided below the main unit 1. The storage component 3 includes a box 31 and a drawer 32 inside the box 31. A panel 33 is provided on the front side of the drawer 32, and a latch 34 is provided inside the panel 33.

[0052] In this invention, the box body 31 provides support, the drawer 32 provides storage, facilitating the storage and retrieval of items, and the latch 34 includes a lock housing 346 with an opening on the upper left side. An outer hook 342 is located inside the lock housing 346, passing through the lock housing 346 on the left side. An opening is located in the middle of the outer hook 342, and a groove is located on the right side of the outer hook 342 containing a cylinder. A first connecting block 343 is located below the outer hook 342, with its upper end rotatably connected to the outer hook 342. A second connecting block 34 is located at the other end of the first connecting block 343. 4. The second connecting block 344 is rotatably connected to the first connecting block 343 at the middle. The upper end of the second connecting block 344 is provided with a round hole, and a cylinder is provided in the round hole. The round hole and the cylinder are rotatably connected. The lower part of the second connecting block 344 is provided with a pull block 345. The inside of the box body 31 is provided with an inner hook 341 corresponding to the outer hook 342. Pulling the pull block 345 drives the second connecting block 344, and the second connecting block 344 causes the outer hook 342 to slide forward. The outer hook 342 cooperates with the opening of the lock shell 346 to realize the locking and unlocking of the outer hook 342 and the inner hook 341. The latch 34 can prevent the drawer 32 from being opened accidentally.

[0053] In this embodiment, when using the PSP electromagnetic induction double hot melt pipe fitting electromagnetic welding equipment, first fix the take-up reel 4 and protective cover 2 to the main unit 1 with screws, put the clamp 6 with bracket 5 into the groove 221, and wind the cable sequentially into the take-up shaft, with the other end passing through the round hole of the take-up reel 4.

[0054] When the cable needs to be released, the cable is pulled to rotate the ratchet 43 and stretch the spring 42. The spring 42 stores elastic potential energy, and the pawl 431 falls into the tooth groove of the ratchet 43, preventing it from reversing. When the cable needs to be retracted, the lever 432 is pushed upward to disengage the pawl 431 from the ratchet 43. At this time, the ratchet 43 rotates through the elastic deformation of the spring 42, driving the winding shaft to retract the cable and pull the pull block 345.

[0055] When welding is required, first pass the cable at the end of the connecting clamp 6 through the groove 221 and connect it to the clamp 6. Then remove the clamp 6. Adjust the angle between the first U-shaped plate 51 and the second U-shaped plate 52. After adjusting to a suitable angle, rotate the support plate 53 connected to the first U-shaped plate 51. The support plate 53 cooperates with the matching limiting groove 54 to fix the angle of the bracket 5, thus fixing the pipe to the clamp 6. Start the welding switch, and the corresponding electromagnetic wire in the clamp 6 will start accordingly. The coil uses alternating current to pass through. An alternating magnetic field is generated by an electromagnetic coil, which induces a current in the pipe to be welded. The thermal effect of the current causes the contact area of ​​the pipe to heat up rapidly to the melting point, thereby achieving welding. After welding, the support plate 53 is put into the second U-shaped plate 52, the second U-shaped plate 52 is put into the first U-shaped plate 51, and then the clamp 6 is placed into the groove 221 of the protective cover 2 to prevent accidental burns to the surrounding personnel. The inclined groove 61 and the inclined block 222 are engaged to separate the cable from the clamp 6, and the clamp 6 is allowed to cool naturally.

[0056] Separate the outer hook 342 from the inner hook 341, pull the drawer 32 outward, put the tools you need into the storage component 3, close the drawer 32, and engage the inner hook 341 with the outer hook 342 to prevent the drawer 32 from opening accidentally. Use the handle 11 to lift the equipment to the required location.

Claims

1. A PSP electromagnetic induction double-heat-melt pipe fitting electromagnetic welding equipment, comprising a main unit (1), a take-up reel (4) on the right side of the main unit (1), and a protective cover (2) on the rear side of the main unit (1), characterized in that: The take-up reel (4) includes a reel shell (46) and a left cover (41) installed on the left side of the reel shell (46). Inside the reel shell (46), from left to right, there are a spring (42), a ratchet (43), a first reel (44), and a second reel (45). Above the ratchet (43), there is a pawl (431) corresponding to the ratchet tooth. At the top of the pawl (431), there is a lever (432). At the bottom of the pawl (431), there is a spring (433). The protective cover (2) includes an outer shell (21) and a base (22) inserted into the bottom of the outer shell (21). The base (22) is provided with a detachable bracket (5), and the top of the bracket (5) is provided with a clamp (6) for welding. The bracket (5) includes two first U-shaped plates (51) and a second U-shaped plate (52) inside the first U-shaped plates (51).

2. The PSP electromagnetic induction dual hot-melt fitting electromagnetic welding apparatus of claim 1, wherein: The pawl (431) is connected to the first disc (44) via a rotating shaft. A fixing post (441) is provided on the left side of the first disc (44) near the edge. One end of the spring (433) is connected to the pawl (431), and the other end is connected to the fixing post (441). A square hole is provided on the upper left side of the disc shell (46), corresponding to the lever (432), and a circular opening is provided on the lower side.

3. The PSP electromagnetic induction dual hot-melt fitting electromagnetic welding apparatus of claim 1, wherein: One end of the outer ring of the spring (42) is bonded and fixed to the left cover (41), and one end of the inner ring is bonded and fixed to the ratchet (43). A round shaft is provided at the center of the left side of the ratchet (43). The length of the round shaft matches the thickness of the spring (42). The round shaft is rotatably connected to the center of the left cover (41). An opening is provided at the center of the first disc (44). A winding shaft is provided at the center of the left side of the second disc (45). The winding shaft passes through the first disc (44) and is welded and fixed at the center of the ratchet (43). The ratchet (43) is rotatably connected to the first disc (44). The outer ring of the first disc (44) is bonded and fixed to the inner wall of the left cover (41). The left side of the inner wall of the disc shell (46) is bonded and fixed to the outer side of the left cover (41).

4. The PSP electromagnetic induction dual hot-melt fitting electromagnetic welding apparatus of claim 1, wherein: The base (22) has a groove (221) and the groove (221) matches the bottom shape of the clamp (6) and the bracket (5). One side of the groove (221) has a wedge (222) and the wedge (222) is triangular. One side of the clamp (6) has a groove (61) and the shape of the groove (61) corresponds to the wedge (222).

5. The PSP electromagnetic induction dual hot-melt fitting electromagnetic welding apparatus of claim 1, wherein: The ends of the first U-shaped plate (51) and the ends of the second U-shaped plate (52) are rotatably connected by a rotating shaft. The bottom surface of the first U-shaped plate (51) is provided with several limiting grooves (54), and the interior of the second U-shaped plate (52) is provided with a support plate (53).

6. The PSP electromagnetic induction dual hot-melt tubing electromagnetic welding apparatus of claim 5, wherein: One end of the support plate (53) is rotatably connected to the middle of the second U-shaped plate (52) by a rotating shaft. The other end of the support plate (53) is engaged with the limiting groove (54). Two connecting plates (55) are provided in the middle of the two first U-shaped plates (51), and the connecting plates (55) are parallel to each other. The left and right ends of the connecting plates (55) are welded and fixed to the front and rear ends of the first U-shaped plates (51). The clamp (6) and the bracket (5) are fixed by screws.

7. The PSP electromagnetic induction dual hot-melt fitting electromagnetic welding apparatus of claim 1, wherein: The host (1) is equipped with the storage assembly (3) below, the storage assembly (3) includes the box (31) and the drawer (32) equipped inside the box (31), the drawer (32) front side is equipped with the panel (33), the panel (33) inside is equipped with the lock catch (34).

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