A blasting tube fixing device

Abstract

The utility model discloses a kind of blasting pipe fixing devices, including base, the position of four end angles of base lower end is uniformly fixedly connected with gyro wheel, the both ends of base are provided with slot, the inside of slot is provided with spigot column, the middle part of base upper end is provided with cavity, the inside of cavity is provided with rotating mechanism, the middle part of rotating mechanism upper end is fixedly connected with electric push rod, the telescopic end of electric push rod upper end is fixedly connected with connecting seat.The utility model provides a kind of blasting pipe fixing device, by the structure cooperation design of force reduction mechanism, combination mechanism, when device body is subjected to external blasting force in blasting engineering, it has certain buffer protection effect, slows down the impact of device body in blasting engineering, to reduce the risk of damage to device body due to large blasting force, to prolong the service life of the device body, improve the protective property of the device body.

Description

Technical Field

[0001] This utility model relates to the field of engineering blasting technology, and in particular to a blasting pipe fixing device. Background Technology

[0002] Tunnels are engineering structures buried in the earth's strata and are a form of human utilization of underground space. In tunnel blasting projects, blasting pipe fixing devices are needed to secure the blasting pipes.

[0003] Referring to patent number CN209783434U, a blasting tube fixing device for directional blasting is described as follows: It includes a fixing plate fixedly installed on the wall to be blasted. The top of the fixing plate has a first sliding groove, and a first slider is slidably connected to the inner wall of the first sliding groove. A slide rail is fixedly connected to the top of the first slider, and a limit block is fixedly connected to the side of the first slider. A bolt threaded onto the limit block abuts against the bottom wall of the first sliding groove. The top of the slide rail has a second sliding groove, and two second sliders are slidably connected to the inner wall of the second sliding groove. A retaining ring is fixedly connected to the top of the second slider. A bidirectional screw is rotatably connected to the side of the slide rail, and the outer surface of the bidirectional screw is threadedly connected to the inner surface of the two second sliders. This utility model has the advantages of simple structure and convenient adjustment, and solves the problems mentioned in the background art.

[0004] However, during the actual implementation process, the applicant discovered the following problems with the patent:

[0005] In practical applications, this patent has poor self-buffering and protection. In blasting projects, when the device body is subjected to external blasting force, it is easily damaged, which directly affects the service life of the device and makes it difficult to meet people's usage needs.

[0006] Therefore, it is necessary to propose a rupture tube fixing device to provide a new technical solution for solving the above-mentioned technical problems. Utility Model Content

[0007] Therefore, it is necessary to provide a blasting tube fixing device to address the above-mentioned technical problems. Through the structural design of the force reduction mechanism and the combination mechanism, the device body has a certain buffering and protective effect when subjected to external blasting force during blasting operations. This reduces the impact on the device body during blasting operations, thereby reducing the risk of damage to the device body due to large blasting forces, extending the service life of the device body, and improving the protective performance of the device body.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A device for fixing blasting tubes, which is used in engineering blasting.

[0010] The aforementioned blasting tube fixing device specifically includes a protective plate and a base. Rollers are fixedly connected to the four corners of the lower end of the base. Slots are provided at both ends of the base, and insertion posts are provided inside the slots. A cavity is provided in the middle of the upper end of the base, and a rotating mechanism is provided inside the cavity. An electric push rod is fixedly connected to the middle of the upper end of the rotating mechanism. A connecting seat is fixedly connected to the telescopic end of the upper end of the electric push rod. A first slot is provided in the middle of the upper end of the connecting seat, and a force-reducing mechanism is provided inside the first slot. A combination mechanism is provided at the upper end of the force-reducing mechanism.

[0011] In a preferred embodiment of the rupture tube fixing device provided by this utility model, the combined mechanism includes a connecting column, with a first connecting rod fixedly connected to both ends of the lower end of the connecting column. The end of the first connecting rod away from the connecting column extends through the connecting seat to the outer side of the lower end of the connecting seat and is fixedly connected to a first limiting block. The first connecting rod is slidably connected to the connecting seat. A second slot is opened in the middle of the upper end of the connecting column. A transmission mechanism is provided inside the second slot. A clamping mechanism is provided at both ends inside the second slot. The two clamping mechanisms are symmetrically arranged.

[0012] In a preferred embodiment of the rupture tube fixing device provided by this utility model, the transmission mechanism includes a motor, which is fixed in the middle of the second slot. Both output ends of the motor are fixedly connected to screws. A bearing is fixedly connected to the end of the screw away from the motor, and the end of the bearing away from the screw is fixedly connected to the end inside the second slot.

[0013] In a preferred embodiment of the rupture tube fixing device provided by this utility model, the clamping mechanism includes a connecting plate, a first connecting block fixedly connected to the lower end of the connecting plate, the first connecting block being slidably connected to a second slot, the first connecting block being threadedly connected to a screw, a first slider being fixedly connected to both sides of the first connecting block located inside the second slot, a first sliding groove being opened on both sides inside the second slot, the first slider being slidably connected to the first sliding groove, a clamping block being provided on one side of each of the two connecting plates, a second connecting rod being fixedly connected to both ends of the clamping block near the connecting plate, the end of the second connecting rod away from the clamping block extending through the connecting plate to the outside of the connecting plate away from the clamping block and being fixedly connected to a second limiting block, the second connecting rod being slidably connected to the connecting plate, a first spring being provided between the connecting plate and the clamping block and located outside the second connecting rod, the two ends of the first spring being fixedly connected to the connecting plate and the clamping block respectively, and an anti-slip pad being fixedly connected to the side of the clamping block away from the connecting plate.

[0014] In a preferred embodiment of the rupture tube fixing device provided by this utility model, the force reduction mechanism includes a third connecting rod located inside a first slot. Both ends of the third connecting rod are fixedly connected to both ends inside the first slot. Two second connecting blocks are slidably connected inside the first slot and outside the third connecting rod. A second spring is provided between the two second connecting blocks and outside the third connecting rod. Both ends of the second spring are fixedly connected to the second connecting blocks at both ends. Second sliders are fixedly connected to both sides of each second connecting block. Second sliding grooves are provided on both sides inside the first slot. The second sliders are slidably connected to the second sliding grooves. A first hinge seat is fixedly connected to the upper end of each second connecting block. A fourth connecting rod is rotatably connected inside the first hinge seat. A second hinge seat is rotatably connected to the end of the fourth connecting rod away from the first hinge seat. The second hinge seat is fixedly connected to the bottom of the connecting column.

[0015] In a preferred embodiment of the rupture tube fixing device provided by this utility model, the rotating mechanism includes a rotating seat, the lower end of which is located inside the cavity and rotatably connected to the cavity. A ring is fixedly connected to the lower end of the rotating seat. A rotating groove is opened inside the cavity. The ring is rotatably connected to the rotating groove. A turntable is slidably connected to the outer side of the rotating seat and to the upper end of the base. A third slot is opened on both sides of the rotating seat. A third slider is fixedly connected to the inner side of the turntable at a position corresponding to the third slot. The third slider is slidably connected to the third slot. A plurality of plug-in blocks are fixedly connected in a circumferential array at the lower end of the turntable. A plug-in groove is opened at the upper end of the base at a position corresponding to the plurality of plug-in blocks. The plug-in blocks are plugged into the plug-in grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model provides a blasting tube fixing device. Through the structural design of the force reduction mechanism and the combination mechanism, the device body has a certain buffering and protective effect when it is subjected to external blasting force during blasting. This reduces the impact on the device body during blasting, thereby reducing the risk of damage to the device body due to large blasting force, extending the service life of the device body, and improving the protective performance of the device body.

[0018] The present invention provides a rupture tube fixing device. Through the structural design of the rotating mechanism, the rotation position of the combined mechanism can be adjusted after the base is moved to the designated position and fixed, thereby improving the convenience of fixing the rupture tube. Attached Figure Description

[0019] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a rupture tube fixing device provided by this utility model;

[0021] Figure 2 This utility model provides a structural schematic diagram of a combination mechanism for fixing a rupture tube.

[0022] Figure 3 A schematic diagram of the transmission mechanism of the rupture tube fixing device provided by this utility model;

[0023] Figure 4 A schematic diagram of the structure of a clamping mechanism for a rupture tube fixing device provided by this utility model;

[0024] Figure 5 A structural schematic diagram of a force-reducing mechanism for a rupture tube fixing device provided by this utility model;

[0025] Figure 6 This is a schematic diagram of the rotating mechanism of a rupture tube fixing device provided by this utility model.

[0026] The markings in the diagram are explained as follows:

[0027] 1. Base; 2. Roller; 3. Slot; 4. Insertion post; 5. Rotating mechanism; 6. Electric push rod; 7. Connecting seat; 8. First slot; 9. Force reduction mechanism; 10. Combination mechanism; 11. Connecting post; 12. Second slot; 13. Transmission mechanism; 14. Clamping mechanism; 15. First connecting rod; 16. First limiting block; 17. Motor; 18. Screw; 19. Bearing; 20. Connecting plate; 21. First connecting block; 22. First slider; 2 3. Clamping block; 24. Anti-slip pad; 25. Second connecting rod; 26. First spring; 27. Second limiting block; 28. Third connecting rod; 29. ​​Second connecting block; 30. Second slider; 31. First hinge seat; 32. Fourth connecting rod; 33. Second hinge seat; 34. Rotating seat; 35. Third slot; 36. Third slider; 37. Turntable; 38. Insertion block; 39. Ring; 40. Rotating groove; 41. Insertion groove; 42. Second spring. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] As described in the background art, this patent has poor buffering and protection effects in practical applications. In blasting projects, when the device body is subjected to external blasting force, it is easily damaged, which directly affects the service life of the device and makes it difficult to meet people's usage needs.

[0030] To solve this technical problem, this utility model provides a blasting tube fixing device, which is applied to engineering blasting.

[0031] For details, please refer to Figure 1 A blasting tube fixing device specifically includes a base 1, with rollers 2 fixedly connected to the four corners of the lower end of the base 1, slots 3 opened at both ends of the base 1, and insertion posts 4 arranged inside the slots 3. A cavity is opened in the middle of the upper end of the base 1, and a rotating mechanism 5 is arranged inside the cavity. An electric push rod 6 is fixedly connected to the middle of the upper end of the rotating mechanism 5. A connecting seat 7 is fixedly connected to the telescopic end of the upper end of the electric push rod 6. A first slot 8 is opened in the middle of the upper end of the connecting seat 7. A force reduction mechanism 9 is arranged inside the first slot 8. A combination mechanism 10 is arranged at the upper end of the force reduction mechanism 9.

[0032] The present invention provides a blasting tube fixing device, which, through the structural design of the force reduction mechanism 9 and the combination mechanism 10, provides a certain buffering and protective effect when the device body is subjected to external blasting force during blasting operations. This reduces the impact on the device body during blasting operations, thereby reducing the risk of damage to the device body due to large blasting forces, extending the service life of the device body, and improving the protective performance of the device body.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] Example 1:

[0035] Please refer to Figures 1-5A blasting tube fixing device includes a base 1, with rollers 2 fixedly connected to the four corners of the lower end of the base 1. Slots 3 are provided at both ends of the base 1, and insertion posts 4 are provided inside the slots 3. A cavity is provided in the middle of the upper end of the base 1, and a rotating mechanism 5 is provided inside the cavity. An electric push rod 6 is fixedly connected to the middle of the upper end of the rotating mechanism 5. A connecting seat 7 is fixedly connected to the telescopic end of the upper end of the electric push rod 6. A first slot 8 is provided in the middle of the upper end of the connecting seat 7. A force reduction mechanism 9 is provided inside the first slot 8, and a combination mechanism 10 is provided at the upper end of the force reduction mechanism 9.

[0036] Through the above structural design, it can be seen that the base 1 can be moved by the roller 2. When the base 1 is moved to the designated position, the insertion post 4 can be inserted into the ground from the position of the slot 3 to limit the movement position of the base 1. The rotation angle of the combined mechanism 10 can be quickly adjusted by the rotation mechanism 5. The combination of the combined mechanism 10 and the force reduction mechanism 9 can clamp different types of rupture tubes. At the same time, when subjected to external force, the combination of the combined mechanism 10 and the force reduction mechanism 9 reduces the damage to the overall device. The height of the combined mechanism 10 can be adjusted by the electric push rod 6.

[0037] Specifically, the combined mechanism 10 includes a connecting column 11. Both ends of the lower end of the connecting column 11 are fixedly connected to a first connecting rod 15. The end of the first connecting rod 15 away from the connecting column 11 extends through the connecting seat 7 to the outer side of the lower end of the connecting seat 7 and is fixedly connected to a first limiting block 16. The first connecting rod 15 is slidably connected to the connecting seat 7. A second slot 12 is opened in the middle of the upper end of the connecting column 11. A transmission mechanism 13 is provided inside the second slot 12. Both ends of the second slot 12 are provided with clamping mechanisms 14. The two clamping mechanisms 14 are symmetrically arranged.

[0038] Through the above structural design, it can be seen that the two clamping mechanisms 14 can clamp the rupture tube. The transmission mechanism 13 can drive the two clamping mechanisms 14 to move, so as to clamp and fix different types of rupture tubes.

[0039] Specifically, the transmission mechanism 13 includes a motor 17, which is fixed in the middle of the second slot 12. Both output ends of the motor 17 are fixedly connected to screws 18. The end of the screw 18 away from the motor 17 is fixedly connected to a bearing 19. The end of the bearing 19 away from the screw 18 is fixedly connected to the end inside the second slot 12.

[0040] Specifically, the clamping mechanism 14 includes a connecting plate 20, with a first connecting block 21 fixedly connected to the lower end of the connecting plate 20. The first connecting block 21 is slidably connected to the second slot 12 and threadedly connected to the screw 18. First sliders 22 are fixedly connected to both sides of the first connecting block 21 located inside the second slot 12. First sliding grooves are provided on both sides inside the second slot 12, and the first sliders 22 are slidably connected to the first sliding grooves. Clamping blocks 23 are provided on corresponding sides of the two connecting plates 20, with the clamping blocks 23 closer to the connecting plate 20. Both ends of the first connecting plate 25 are fixedly connected to a second connecting rod 25. The end of the second connecting rod 25 away from the clamping block 23 passes through the connecting plate 20 and extends to the outside of the connecting plate 20 away from the clamping block 23, and is fixedly connected to a second limiting block 27. The second connecting rod 25 is slidably connected to the connecting plate 20. A first spring 26 is provided between the connecting plate 20 and the clamping block 23 and located outside the second connecting rod 25. The two ends of the first spring 26 are fixedly connected to the connecting plate 20 and the clamping block 23 respectively. An anti-slip pad 24 is fixedly connected to the side of the clamping block 23 away from the connecting plate 20.

[0041] Through the above structural design, it can be seen that when it is necessary to clamp and fix the rupture tube, the rupture tube can be placed between the two clamping blocks 23, and then the motor 17 inside the second slot 12 can be started. The output ends of the motor 17 drive the screws 18 at both ends to rotate on the bearings 19. The rotation of the two electric push rods 6 can drive the two first connecting blocks 21 to move closer to each other inside the second slot 12. Then the two first connecting blocks 21 drive the two connecting plates 20 to move closer to each other. At the same time as the two connecting plates 20 move closer to each other, the two connecting plates 20 drive the clamping blocks 23 to squeeze and clamp the rupture tube through the anti-slip pads 24. The two clamping blocks 23 can fix the rupture tube. When the whole device is subjected to external force, the first spring 26 can reduce the force of the external force to prevent damage to the rupture tube and the whole device.

[0042] Specifically, the force reduction mechanism 9 includes a third connecting rod 28, which is located inside the first slot 8. The two ends of the third connecting rod 28 are fixedly connected to the two ends inside the first slot 8. Two second connecting blocks 29 are slidably connected inside the first slot 8 and outside the third connecting rod 28. A second spring 42 is provided between the two second connecting blocks 29 and outside the third connecting rod 28. The two ends of the second spring 42 are fixedly connected to the two ends of the second connecting blocks 29. A second slider 30 is fixedly connected to both sides of the second connecting block 29. A second sliding groove is provided on both sides inside the first slot 8. The second slider 30 is slidably connected to the second sliding groove. A first hinge seat 31 is fixedly connected to the upper end of the second connecting block 29. A fourth connecting rod 32 is rotatably connected inside the first hinge seat 31. A second hinge seat 33 is rotatably connected to the end of the fourth connecting rod 32 away from the first hinge seat 31. The second hinge seat 33 is fixedly connected to the bottom of the connecting column 11.

[0043] Through the above structural design, it can be seen that when the overall device is subjected to external force, the connecting column 11 vibrates. When the connecting column 11 vibrates, it is pressed downward. Through the downward pressing of the connecting column 11, the connecting column 11 can press the second hinge seat 33. Then, the second hinge seat 33 presses the first hinge seat 31 through the fourth connecting rod 32. When the two first hinge seats 31 are pressed, they can drive the two second connecting blocks 29 to move away from each other inside the second slot 12. At the same time as the two second connecting blocks 29 move away from each other, they pull the second spring 42. The second spring 42 can reduce and buffer the force of vibration.

[0044] Example 2:

[0045] The rupture tube fixing device provided in Embodiment 1 is further optimized, specifically, as follows: Figure 1 , Figure 6 As shown, the rotating mechanism 5 includes a rotating seat 34, the lower end of which is located inside the cavity and rotatably connected to the cavity. A ring 39 is fixedly connected to the lower end of the rotating seat 34. A rotating groove 40 is opened inside the cavity. The ring 39 is rotatably connected to the rotating groove 40. A turntable 37 is slidably connected to the outer side of the rotating seat 34 and the upper end of the base 1. A third slot 35 is opened on both sides of the rotating seat 34. A third slider 36 is fixedly connected to the inner side of the turntable 37 at a position corresponding to the third slot 35. The third slider 36 is slidably connected to the third slot 35. A plurality of plug-in blocks 38 are fixedly connected to the lower end of the turntable 37 in a circumferential array. A plug-in groove 41 is opened at the upper end of the base 1 at a position corresponding to the plurality of plug-in blocks 38. The plug-in blocks 38 are plugged into the plug-in groove 41.

[0046] Through the above structural design, it can be seen that when it is necessary to adjust the rotation angle of the combined mechanism 10, the turntable 37 can be pulled upward, thereby causing the turntable 37 to drive the third slider 36 to slide upward inside the third slot 35. At the same time, the turntable 37 causes the insertion block 38 to separate from the insertion slot 41. After the insertion block 38 and the insertion slot 41 are separated, the turntable 37 can be rotated. The rotation of the turntable 37 can drive the rotating seat 34 to rotate. The rotation of the rotating seat 34 can adjust the rotation angle of the combined mechanism 10. After the position of the combined mechanism 10 is adjusted, the turntable 37 can be released, and then the turntable 37 moves downward by its own weight, thereby causing the insertion block 38 to insert into the insertion slot 41. The insertion of the insertion block 38 into the insertion slot 41 can limit the rotation of the combined mechanism 10.

Claims

1. A blasting tube securing device, characterized in that, The base (1) includes a base, and rollers (2) are fixedly connected to the four corners of the lower end of the base (1). Slots (3) are provided at both ends of the base (1). Insertion pins (4) are provided inside the slots (3). A cavity is provided in the middle of the upper end of the base (1). A rotating mechanism (5) is provided inside the cavity. An electric push rod (6) is fixedly connected to the middle of the upper end of the rotating mechanism (5). A connecting seat (7) is fixedly connected to the telescopic end of the upper end of the electric push rod (6). A first slot (8) is provided in the middle of the upper end of the connecting seat (7). A force reduction mechanism (9) is provided inside the first slot (8). A combination mechanism (10) is provided at the upper end of the force reduction mechanism (9).

2. A blasting tube securing device according to claim 1, characterised in that The combined mechanism (10) includes a connecting column (11), and a first connecting rod (15) is fixedly connected to both ends of the lower end of the connecting column (11). The end of the first connecting rod (15) away from the connecting column (11) passes through the connecting seat (7) and extends to the outer side of the lower end of the connecting seat (7) and is fixedly connected to a first limiting block (16). The first connecting rod (15) is slidably connected to the connecting seat (7). A second slot (12) is opened in the middle of the upper end of the connecting column (11). A transmission mechanism (13) is provided inside the second slot (12). A clamping mechanism (14) is provided at both ends inside the second slot (12). The two clamping mechanisms (14) are symmetrically arranged.

3. The rupture tube fixing device according to claim 2, characterized in that, The transmission mechanism (13) includes a motor (17), which is fixed in the middle of the second slot (12). Both output ends of the motor (17) are fixedly connected to screws (18). A bearing (19) is fixedly connected to the end of the screw (18) away from the motor (17). The end of the bearing (19) away from the screw (18) is fixedly connected to the end inside the second slot (12).

4. The rupture tube fixing device according to claim 3, characterized in that, The clamping mechanism (14) includes a connecting plate (20). A first connecting block (21) is fixedly connected to the lower end of the connecting plate (20). The first connecting block (21) is slidably connected to the second slot (12). The first connecting block (21) is threadedly connected to the screw (18). A first slider (22) is fixedly connected to both sides of the first connecting block (21) located inside the second slot (12). A first sliding groove is opened on both sides inside the second slot (12). The first slider (22) is slidably connected to the first sliding groove. A clamping block (23) is provided on one side of each of the two connecting plates (20). The clamping block (23) is located on the side closer to the connecting plate (20). Both ends of the first connecting rod are fixedly connected to a second connecting rod (25). The end of the second connecting rod (25) away from the clamping block (23) passes through the connecting plate (20) and extends to the outside of the connecting plate (20) away from the clamping block (23) and is fixedly connected to a second limiting block (27). The second connecting rod (25) is slidably connected to the connecting plate (20). A first spring (26) is provided between the connecting plate (20) and the clamping block (23) and located outside the second connecting rod (25). The two ends of the first spring (26) are fixedly connected to the connecting plate (20) and the clamping block (23) respectively. An anti-slip pad (24) is fixedly connected to the side of the clamping block (23) away from the connecting plate (20).

5. The rupture tube fixing device according to claim 2, characterized in that, The force reduction mechanism (9) includes a third connecting rod (28), which is located inside the first slot (8). Both ends of the third connecting rod (28) are fixedly connected to both ends inside the first slot (8). Two second connecting blocks (29) are slidably connected inside the first slot (8) and outside the third connecting rod (28). A second spring (42) is provided between the two second connecting blocks (29) and outside the third connecting rod (28). Both ends of the second spring (42) are fixedly connected to the second connecting blocks (29) at both ends. The second connecting block (29) is fixedly connected to both sides of the second slider (30). The first slot (8) has a second sliding groove on both sides. The second slider (30) is slidably connected to the second sliding groove. The upper end of the second connecting block (29) is fixedly connected to the first hinge seat (31). The first hinge seat (31) is rotatably connected to the inside of the first hinge seat (31). The end of the fourth connecting rod (32) away from the first hinge seat (31) is rotatably connected to the second hinge seat (33). The second hinge seat (33) is fixedly connected to the bottom of the connecting column (11).

6. The rupture tube fixing device according to claim 1, characterized in that, The rotating mechanism (5) includes a rotating seat (34), the lower end of which is located inside the cavity and rotatably connected to the cavity. A ring (39) is fixedly connected to the lower end of the rotating seat (34). A rotating groove (40) is provided inside the cavity. The ring (39) is rotatably connected to the rotating groove (40). A turntable (37) is slidably connected to the outer side of the rotating seat (34) and the upper end of the base (1). A third slot (35) is provided on both sides of the rotating seat (34). The turntable (37) has a third slider (36) fixedly connected to the inner side of the turntable (37) at the position corresponding to the third slot (35). The third slider (36) is slidably connected to the third slot (35). The turntable (37) has a plurality of plug-in blocks (38) fixedly connected to the lower circumferential array. The base (1) has a plug-in slot (41) opened at the upper end of the base (1) at the position corresponding to the plurality of plug-in blocks (38). The plug-in blocks (38) are plugged into the plug-in slots (41).

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