Recyclable bag type expansion anchor rod

Abstract

The invention relates to the field of anchor rod equipment, in particular to a recoverable bag type expansion anchor rod which comprises an anchor rod body, a hollow pipe sleeve and an anchor head, the anchor head is installed at one end of the hollow pipe sleeve, the anchor rod body is installed in the hollow pipe sleeve and connected with the anchor head, a bag is arranged on the hollow pipe sleeve, and the bag is connected with the anchor head. A grouting channel is arranged in the hollow pipe sleeve, the grouting channel is connected with the bag, a ventilation channel and a pipe sleeve sliding groove are arranged in the hollow pipe sleeve, the two ends of the pipe sleeve sliding groove are connected with the ventilation channel and the bag respectively, the valve sliding block is connected in the pipe sleeve sliding groove in a sliding mode, and the valve sliding block is connected with the valve sliding block in a sliding mode. A ventilation groove is formed in the valve sliding block and can be in butt joint with the ventilation channel. The bag unfolding device has the effect that the bag can be unfolded more sufficiently.

Description

Technical Field

[0001] The present application relates to the field of anchor rod equipment, and in particular to a retrievable capsule-type expanded anchor rod. Background Art

[0002] Anchor support refers to a reinforcement support method used in surface engineering such as slopes, deep rock foundation pits, and underground chambers such as tunnels and stopes. Rods are made of metal, wood, polymer or other materials and driven into pre-drilled holes in the surface rock mass or the rock mass around the chamber. The surrounding rock is combined with the stable rock mass by the special structure of the head and rod body and the tail support plate, or by relying on bonding to produce a suspension effect, a composite beam effect, and a reinforcement effect to achieve the purpose of support.

[0003] Among them, the recyclable bladder expanded body anchor is a modern engineering material that combines the characteristics of recyclable anchor and bladder expanded body anchor. While maintaining the advantages of bladder expanded body anchor such as high bearing capacity, small deformation, economic and high efficiency, it also has the environmental protection and reusability of recyclable anchor.

[0004] However, when the existing recyclable capsule expansion anchor is installed in the borehole for grouting filling, In order to avoid leakage of slurry, the bladder is usually sealed. However, excessive grouting pressure may cause grouting difficulties, making it impossible for the bladder to fit tightly against the side wall of the borehole. Summary of the invention

[0005] In order to make the bladder fit more closely to the side wall of the borehole, the present application provides a recyclable bladder-type expansion anchor rod.

[0006] The present application provides a recyclable capsule-type expanded anchor bolt adopts the following technical solution: A recyclable bladder-type expanded anchor rod comprises an anchor rod body, a hollow tube sleeve and an anchor head, wherein the anchor head is installed at one end of the hollow tube sleeve, the anchor rod body is installed in the hollow tube sleeve and is connected to the anchor head, a bladder bag is provided on the hollow tube sleeve, a grouting channel is provided in the hollow tube sleeve, the grouting channel is connected to the bladder bag, and also comprises a valve slider, a ventilation channel and a tube sleeve slide groove are provided in the hollow tube sleeve, the two ends of the tube sleeve slide groove are respectively connected to the ventilation channel and the bladder bag, the valve slider is slidably connected in the tube sleeve slide groove, a ventilation groove is provided on the valve slider, and the ventilation groove can be docked with the ventilation channel.

[0007] By adopting the above technical scheme, a ventilation channel and a tube sleeve slide groove are provided on the hollow tube sleeve, and the two ends of the tube sleeve slide groove are respectively connected to the ventilation channel and the bladder bag, and the valve slider is slidably connected in the tube sleeve slide groove. When grouting is performed in the bladder bag, as the slurry increases, the air pressure in the bladder bag gradually increases, and the bladder bag also expands accordingly. When the air pressure reaches a certain level and further grouting is difficult, the valve slider is pushed due to the excessive air pressure, and the ventilation groove is connected to the ventilation channel, thereby adjusting the gas pressure in the bladder bag, so that the bladder bag fits more closely to the side wall of the borehole.

[0008] In a specific feasible implementation scheme, it also includes a limit rod, which is installed in the tube sleeve slide groove, the limit rod is installed along the moving direction of the valve slider, and one end of the limit rod is extended toward the head direction, the limit rod passes through the valve slider, and the valve slider can slide relative to the limit rod.

[0009] By adopting the above technical solution, the limit rod is installed in the tube sleeve slide groove, the limit rod is installed along the moving direction of the valve slider, the limit rod runs through the valve slider, the valve slider can move relative to the limit rod, and the limit rod guides the valve slider, avoiding excessive friction between the valve slider and the tube sleeve slide groove, thereby affecting the movement of the valve slider.

[0010] In a specific possible implementation manner, two limit rods are provided, and the two limit rods are symmetrically arranged relative to the center of the valve slider.

[0011] By adopting the above technical solution and setting two limit rods, the two limit rods are symmetrically arranged relative to the center of the valve slider, thereby ensuring that the force of the limit rods on the valve slider is more balanced and the movement of the valve slider is smoother.

[0012] In a specific possible implementation scheme, it also includes a limit spring, which is sleeved on the limit rod and located between the valve slider and the inner wall of the tube sleeve slot. One end of the limit spring is connected to the valve slider, and the other end of the limit spring is connected to the inner wall of the tube sleeve slot. The limit spring is always in a compressed state.

[0013] By adopting the above technical solution, the limit spring sleeve is arranged on the limit rod and is located between the valve slider and the inner wall of the tube sleeve slide groove. The limit spring is always in a compressed state. The limit spring applies a force to the valve slider. When the air pressure in the bag reaches a certain level, the valve slider is pushed to slide and compress the limit spring. When the air pressure decreases to a certain level, the limit spring applies a force to the valve slider, thereby disconnecting the connection between the ventilation groove and the ventilation channel, thereby ensuring the airtight effect in the bag again, making it easier for the bag to fit the side wall of the drill hole.

[0014] In a specific possible implementation manner, a plurality of the pouches are provided, and the plurality of the pouches are evenly arranged along the length direction of the hollow sleeve.

[0015] By adopting the above technical solution, several bladders are arranged in sections and evenly arranged along the length direction of the hollow tube sleeve, so that the overall bladder space is divided into several independent parts, which makes it easier to control the size of the air pressure in the bladder and further ensure the expansion effect of the bladder.

[0016] In a specific feasible implementation scheme, it also includes a supporting mechanism, which includes a driving plate, a driving rod and a supporting plate, wherein an anchor head cavity is opened in the anchor head, the driving plate is rotatably connected to the anchor head cavity, an anchor head slide groove is opened on the inner side wall of the anchor head cavity, and the anchor head slide groove penetrates the side wall of the anchor head, the supporting rod is slidably connected in the anchor head slide groove, and one end extends to the outside of the anchor head cavity, the supporting plate is installed on the support rod extending outside the anchor head cavity, the supporting rod is arranged in the anchor head cavity and a limiting block is installed at one end thereof, a limiting groove is opened on the driving plate, the limiting block is slidably connected in the limiting groove, and can squeeze the limiting block through the side wall of the limiting groove, thereby driving the supporting rod to move, and the anchor rod body is connected to the driving plate.

[0017] By adopting the above technical scheme, the driving plate is rotatably connected in the anchor head cavity, the support rod is slidably connected in the anchor head slot, the limit block is installed in the support ring and slidably connected to one end of the anchor head slot, the limit block is slidably connected in the limit slot, and the support plate is installed in the support rod extending to the end outside the anchor head cavity, so that the driving plate can be driven to rotate through the anchor rod body, and the limit slot on the driving plate squeezes the limit block, thereby driving the support rod to slide in the anchor head slot, so that the support plate is stretched and supported on the side wall of the drill hole to position the anchor rod, thereby improving the stability of the anchor rod body and facilitating grouting work.

[0018] In a specific feasible implementation scheme, a plurality of limit rods and support plates are provided, a plurality of anchor head slide grooves are provided corresponding to the limit rods, a plurality of anchor head slide grooves are evenly arranged on the circumferential portion of the inner side wall of the anchor head cavity, and the number of limit blocks and limit grooves is provided correspondingly.

[0019] By adopting the above technical scheme, a number of limit rods and support plates are set, a number of anchor head slide grooves are set corresponding to the limit rods, and a number of anchor head slide grooves are evenly opened on the circumferential part of the inner wall of the anchor head cavity, thereby supporting the circumferential part of the anchor rod, and installing the anchor rod in the middle part of the drill hole, which is convenient for grouting in the bag.

[0020] In a specific possible implementation scheme, a receiving groove is provided on the anchor head, and the receiving groove is configured as an annular groove, and a plurality of the support plates can be received in the receiving groove.

[0021] By adopting the above technical solution, the receiving groove is set as an annular groove. When the support plate is not needed for support, the support plate can be stored in the receiving groove, thereby preventing the support plate from scratching the side wall of the drill hole during the process of the anchor rod being lowered, thereby interfering with the lowering and installation of the anchor rod.

[0022] In a specific possible implementation scheme, the limiting groove is configured as an arc-shaped groove, and one end of the limiting groove is configured adjacent to the axis of the driving plate, and the other end of the limiting groove is configured adjacent to the edge of the driving plate.

[0023] By adopting the above technical solution, the limit groove is set as an arc groove, and one end of the limit groove is set adjacent to the axis of the driving plate, and the other end of the limit groove is set adjacent to the edge of the driving plate, so that it is convenient to squeeze the limit block through the limit groove, thereby facilitating the support rod to move.

[0024] In a specific feasible implementation scheme, it also includes a limit plate, which is detachably connected to the end of the hollow sleeve away from the anchor head, and a limit plate rotation groove is provided on the side wall of the limit plate adjacent to the hollow sleeve. A rod body rotation block is provided at one end of the anchor rod body, and the rod body brick is rotatably connected in the limit plate rotation groove, a clamping slot is provided on the drive plate, and a clamping block is provided at the other end of the anchor rod body, and the clamping block can be inserted into the clamping slot.

[0025] By adopting the above technical solution, the rod body at one end of the anchor rod body is rotatably connected in the rotation groove of the limiting plate, and the clamping block at the other end of the anchor rod body is inserted into the clamping groove, so that the anchor rod body is connected to the driving plate. At the same time, when the anchor rod body needs to be recovered later, the limiting plate can be taken out, so that the anchor rod body can be pulled out, which is convenient for the installation and recovery of the anchor rod body.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The hollow sleeve is provided with a ventilation channel and a sleeve chute. The two ends of the sleeve chute are connected to the ventilation channel and the bag respectively. The valve slider is slidably connected in the sleeve chute. When grouting is performed in the bag, as the slurry increases, the air pressure in the bag gradually increases, and the bag also expands. When the air pressure reaches a certain level and it is difficult to further grout, the valve slider is pushed due to the excessive air pressure, and the ventilation groove is connected to the ventilation channel, thereby adjusting the gas pressure in the bag, so that the bag fits more closely on the side wall of the borehole; 2. The limit spring sleeve is arranged on the limit rod and is located between the valve slider and the inner wall of the tube sleeve slide groove. The limit spring is always in a compressed state. The limit spring applies a force to the valve slider. When the air pressure in the bag reaches a certain level, the valve slider is pushed to slide and the limit spring is compressed. When the air pressure decreases to a certain level, the limit spring applies a force to the valve slider, thereby disconnecting the connection between the ventilation groove and the ventilation channel, thereby ensuring the airtight effect in the bag again, so that the bag can fit the side wall of the drill hole more closely. 3. The driving plate is rotatably connected in the anchor head cavity, the support rod is slidably connected in the anchor head slot, the limit block is installed in the support ring and slidably connected to one end of the anchor head slot, the limit block is slidably connected in the limit slot, and the support plate is installed in the support rod extending to the end outside the anchor head cavity, so that the driving plate can be driven to rotate through the anchor rod body, and the limit slot on the driving plate squeezes the limit block, thereby driving the support rod to slide in the anchor head slot, so that the support plate is expanded and supported on the side wall of the borehole to position the anchor rod, thereby improving the stability of the anchor rod body and facilitating the grouting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 This is a front view of an embodiment of the present application.

[0029] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0030] Figure 4 for Figure 3 Enlarged view of part A.

[0031] Figure 5 for Figure 3 Magnified view of part B.

[0032] Figure 6 It is a schematic diagram of the structure of the connection between the valve slider and the guide rod in the embodiment of the present application.

[0033] Figure 7 for Figure 2 Cross-sectional view along direction BB.

[0034] Figure 8 It is an exploded view showing the connection relationship between the anchor rod body and the driving plate in the embodiment of the present application.

[0035] Explanation of the accompanying drawings: 1. Anchor rod body; 11. Rod body rotating block; 12. Clamping block; 2. Hollow pipe sleeve; 21. Grouting channel; 22. Ventilation channel; 23. Pipe sleeve slide groove; 3. Anchor head; 31. Anchor head cavity; 32. Anchor head slide groove; 33. Storage groove; 4. Limit plate; 41. Limit plate rotating groove; 5. Valve slider; 51. Ventilation groove; 6. Limit rod; 7. Limit spring; 8. Support mechanism; 81. Drive plate; 811. Limit groove; 812. Clamping groove; 82. Drive rod; 83. Support rod; 831. Limit block; 84. Support plate; 9. Bag. DETAILED DESCRIPTION

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The embodiment of the present application discloses a retrievable capsule-type expansion anchor rod.

[0038] like Figures 1 to 4 As shown, the recyclable capsule-type expanded anchor includes an anchor body 1, a hollow sleeve 2, an anchor head 3 and a limiting plate 4. The hollow pipe sleeve 2 is hollow, the anchor head 3 is welded at one end of the hollow sleeve, the limit plate 4 is fixed at the other end of the hollow sleeve by bolts, the anchor rod body 1 is set through the hollow pipe sleeve 2, and a rod body rotating block 11 is installed at one end of the anchor rod body 1 adjacent to the limit plate 4. The surface of the limit plate 4 adjacent to the hollow pipe sleeve 2 is provided with a limit plate 4 rotating groove, and the rod body brick is rotatably connected in the limit plate 4 rotating groove, so that the anchor rod body is installed in the hollow sleeve, and a plurality of bags 9 are installed on the hollow sleeve, and the plurality of bags 9 are evenly installed along the length direction of the hollow pipe sleeve 2. A ventilation channel 22 and a grouting channel 21 are provided in the hollow pipe sleeve 2, the lower end of the bag 9 is connected to the grouting channel 21, and the upper end of the bag 9 is connected to the ventilation channel 22, and the limit plate 4 is provided with through holes corresponding to the ventilation channel 22 and the grouting channel 21.

[0039] like Figure 5 and Figure 6As shown, in the embodiment of the present application, a valve slider 5 and a limiting rod 6 are also included. A sleeve slot 23 is provided in the hollow sleeve 2. One end of the sleeve slot 23 is connected to the ventilation channel 22, and the other end of the sleeve slot 23 is connected to the bag 9. The valve slider 5 is slidably connected in the sleeve slot 23. Two limiting rods 6 are provided. The two limiting rods 6 are installed at both sides of the sleeve slot 23 in the horizontal direction and are symmetrically arranged relative to the center of the valve slider 5. One end of the limiting rod 6 is fixedly connected to the sleeve slot 23. On the inner wall, the other end of the limit rod 6 is arranged toward the bladder 9, and the limit rod 6 is installed in the horizontal direction. The limit rod 6 passes through the valve slider 5, and the valve slider 5 can slide along the limit rod 6. A limit spring 7 is sleeved on the limit rod 6. The limit spring 7 is installed on the side of the valve slider 5 away from the bladder 9. One end of the limit spring 7 is connected to the valve slider 5, and the other end of the limit spring 7 is connected to the inner wall of the tube sleeve slide groove 23. The valve slider 5 can be provided with a ventilation groove 51, and the ventilation groove 51 is set as an L-shaped groove.

[0040] The valve slider 5 is slidably connected in the pipe sleeve slide groove 23. When grouting is performed in the bag 9, as the slurry increases, the air pressure in the bag 9 gradually increases, and the bag 9 also expands. When the air pressure reaches a certain level and it is difficult to further grout, the valve slider 5 is pushed due to the excessive air pressure, and the ventilation groove 51 is connected with the ventilation channel 22, thereby adjusting the gas pressure in the bag 9, so that the bag 9 fits more closely to the side wall of the drill hole. At the same time, the limit spring 7 is set on the limit rod 6 and is located at the valve The limit spring 7 is always in a compressed state between the slider 5 and the inner wall of the tube sleeve slide groove 23. The limit spring 7 applies a force to the valve slider 5. When the air pressure in the bag 9 reaches a certain level, the valve slider 5 is pushed to slide and compress the limit spring 7. When the air pressure decreases to a certain level, the limit spring 7 applies a force to the valve slider 5, thereby disconnecting the connection between the ventilation groove 51 and the ventilation channel 22, thereby ensuring the airtight effect in the bag 9 again, making it easier for the bag 9 to fit the side wall of the drill hole.

[0041] like Figure 7 and Figure 8 As shown, in the embodiment of the present application, a support mechanism 8 is also included, and the support mechanism 8 includes a driving plate 81, a driving rod 82 and a support rod 83. An anchor head cavity 31 is opened in the anchor head 3, and the driving plate 81 is rotatably connected to the inner wall of the anchor head cavity 31. A clamping block 12 is provided at one end of the anchor rod body 1 away from the limiting plate 4, and a clamping groove 812 is provided on the driving plate 81 corresponding to the clamping block 12. The clamping block 12 is inserted into the clamping groove 812, so that the driving plate 81 can be driven by the anchor rod body 1.

[0042] The rod body at one end of the anchor rod body 1 is rotatably connected in the rotation groove of the limit plate 4, and the clamping block 12 at the other end of the anchor rod body 1 is inserted into the clamping groove 812, so that the anchor rod body 1 is connected to the driving plate 81. At the same time, when the anchor rod body 1 needs to be recovered later, the limit plate 4 can be taken out, so that the anchor rod body 1 can be pulled out, which is convenient for the installation and recovery of the anchor rod body 1.

[0043] Five anchor head slots 32 are provided on the inner side wall of the anchor head cavity 31. The five anchor head slots 32 are evenly provided on the circumferential part of the side wall of the anchor head cavity 31, and the anchor head slots 32 penetrate the side wall of the anchor head 3. The number of support rods 83 corresponds to the number of anchor head slots 32. The support rod 83 is slidably connected in the anchor head slot 32. One end of the support rod 83 is provided in the anchor head slot 32, and the other end of the support rod 83 extends to the outside of the anchor head 3. A limit block 831 is installed at one end of the support rod 83 provided in the anchor head slot 32. An extrusion groove is provided on the driving plate 81 corresponding to the limit block 831, and the limit block 831 is slidably connected in the extrusion groove. The extrusion groove is set as an arc groove, and one end of the limit groove 811 is set adjacent to the axial center of the driving plate 81, and the other end of the limit groove 811 is set away from the axial center of the driving plate 81. The support plate 84 is installed on the support rod 83 and extends to the outer end of the anchor head 3. A storage groove 33 is provided on the outer wall of the anchor head 3 corresponding to the support plate 84. The storage groove 33 is set as a slide groove, and the support plate 84 can be stored in the storage groove 33.

[0044] The driving plate 81 is rotatably connected to the anchor head cavity 31, the support rod 83 is slidably connected to the anchor head slot 32, the limit block 831 is installed on the support ring and is slidably connected to one end of the anchor head slot 32, the limit block 831 is slidably connected to the limit groove 811, and the support plate 84 is installed on the support rod 83 extending to the end outside the anchor head cavity 31, so that the driving plate 81 can be driven to rotate through the anchor rod body 1, and the limit groove 811 on the driving plate 81 squeezes the limit block 831, thereby driving the support rod 83 to slide in the anchor head slot 32, so that the support plate 84 is stretched and supported on the side wall of the borehole to position the anchor rod, thereby improving the stability of the anchor rod body 1 and facilitating the grouting work.

[0045] The implementation principle of a recyclable sac-type expanded anchor rod in the embodiment of the present application is as follows: after the anchor rod is installed in the drilled hole, the driving plate 81 is rotated to connect to the anchor head cavity 31, the support rod 83 is slidably connected to the anchor head slide groove 32, the limit block 831 is installed in the support ring and is slidably connected to one end of the anchor head slide groove 32, the limit block 831 is slidably connected to the limit groove 811, and the support plate 84 is installed in the support rod 83 and extends to the end outside the anchor head cavity 31, so that the driving plate 81 can be driven to rotate through the anchor rod body 1, and the limit groove 811 on the driving plate 81 squeezes the limit block 831, thereby driving the support rod 83 to slide in the anchor head slide groove 32, so that the support plate 84 is stretched and supported on the side wall of the drilled hole to position the anchor rod, thereby improving the stability of the anchor rod body 1 and facilitating the grouting work. When grouting is performed in the bag 9, as the slurry increases, the air pressure in the bag 9 As the air pressure in the sac 9 increases gradually, the sac 9 also expands accordingly. When the air pressure reaches a certain level and further grouting is difficult, the valve slider 5 is pushed due to the excessive air pressure, and the ventilation groove 51 is connected with the ventilation channel 22, thereby adjusting the gas pressure in the sac 9, so that the sac 9 fits more closely to the side wall of the borehole. At the same time, the limit spring 7 is sleeved on the limit rod 6 and is located between the valve slider 5 and the inner wall of the pipe sleeve slide groove 23. The limit spring 7 is always in a compressed state, and a force is applied to the valve slider 5 through the limit spring 7. When the air pressure in the sac 9 reaches a certain level, the valve slider 5 is pushed to slide and compress the limit spring 7. When the air pressure decreases to a certain level, the limit spring 7 applies a force to the valve slider 5, thereby disconnecting the connection between the ventilation groove 51 and the ventilation channel 22, thereby ensuring the airtight effect in the sac 9 again, so that the sac 9 fits more closely to the side wall of the borehole.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A recyclable bladder-type expanded anchor rod, comprising an anchor rod body (1), a hollow tube sleeve (2) and an anchor head (3), wherein the anchor head (3) is installed at one end of the hollow tube sleeve (2), the anchor rod body is installed in the hollow tube sleeve (2) and connected to the anchor head (3), a bladder bag (9) is arranged on the hollow tube sleeve (2), a grouting channel (21) is arranged in the hollow tube sleeve (2), and the grouting channel (21) is connected to the bladder bag (9), characterized in that: It also includes a valve slider (5), wherein the hollow tube sleeve (2) is provided with a ventilation channel (22) and a tube sleeve slide groove (23), wherein the two ends of the tube sleeve slide groove (23) are respectively connected to the ventilation channel (22) and the bag (9), and the valve slider (5) is slidably connected in the tube sleeve slide groove (23), and a ventilation groove (51) is provided on the valve slider (5), and the ventilation groove (51) can be connected to the ventilation channel (22).

2. The recyclable capsule-type expanded anchor rod according to claim 1, characterized in that: It also includes a limiting rod (6), which is installed in the pipe sleeve slide groove (23), the limiting rod (6) is installed along the moving direction of the valve slider (5), and one end of the limiting rod (6) is extended toward the head direction, the limiting rod (6) passes through the valve slider (5), and the valve slider (5) can slide relative to the limiting rod (6).

3. The retrievable bladder-expanded anchor rod according to claim 2, characterized in that: Two limit rods (6) are provided, and the two limit rods (6) are symmetrically arranged relative to the central part of the valve slider (5).

4. The retrievable capsule-type expanded anchor bolt according to claim 2, characterized in that: It also includes a limit spring (7), which is sleeved on the limit rod (6) and located between the valve slider (5) and the inner wall of the tube sleeve slide groove (23), one end of the limit spring (7) is connected to the valve slider (5), and the other end of the limit spring (7) is connected to the inner wall of the tube sleeve slide groove (23), and the limit spring (7) is always in a compressed state.

5. The retrievable capsule-type expanded anchor bolt according to claim 1, characterized in that: A plurality of the sacs (9) are provided, and the plurality of the sacs (9) are evenly arranged along the length direction of the hollow sleeve.

6. The retrievable bladder-expanded anchor rod according to claim 1, characterized in that: The anchor head (3) further comprises a support mechanism (8), wherein the support mechanism (8) comprises a driving plate (81), a driving rod (82), a supporting rod (83) and a supporting plate (84); an anchor head cavity (31) is provided in the anchor head (3); the driving plate (81) is rotatably connected in the anchor head cavity (31); an anchor head slide groove (32) is provided on the inner side wall of the anchor head cavity (31); the anchor head slide groove (32) penetrates the side wall of the anchor head (3); the supporting rod (83) is slidably connected in the anchor head slide groove (32), and one end of the supporting rod (83) extends to the outer side of the anchor head cavity (31); The support plate (84) is installed at one end of the support rod (83) extending outside the anchor head cavity (31); a limit block (831) is installed at one end of the support rod (83) arranged in the anchor head cavity (31); a limit slot (811) is provided on the driving plate (81); the limit block (831) is slidably connected in the limit slot (811) and can be squeezed by the side wall of the limit slot (811), thereby driving the support rod (83) to move; and the anchor rod body (1) is connected to the driving plate (81).

7. The retrievable capsule-type expanded anchor bolt according to claim 6, characterized in that: A plurality of the limit rods (6) and the support plates (84) are provided, and a plurality of the anchor head slide grooves (32) are provided corresponding to the limit rods (6). The plurality of the anchor head slide grooves (32) are evenly arranged on the circumferential part of the inner wall of the anchor head cavity (31), and the limit blocks (831) and the limit grooves (811) are provided in corresponding numbers.

8. The retrievable bladder-expanded anchor bolt according to claim 7, characterized in that: The anchor head (3) is provided with a receiving groove (33), the receiving groove (33) being configured as an annular groove, and a plurality of the support plates (84) can be received in the receiving groove (33).

9. The retrievable bladder-expanded anchor rod according to claim 6, characterized in that: The limiting groove (811) is configured as an arc-shaped groove, and one end of the limiting groove (811) is configured adjacent to the axis of the driving plate (81), and the other end of the limiting groove (811) is configured adjacent to the edge of the driving plate (81).

10. The retrievable bladder-expanded anchor bolt according to claim 6, characterized in that: It also comprises a limit plate (4), the limit plate (4) being detachably connected to one end of the hollow sleeve away from the anchor head (3), the limit plate (4) being provided with a limit plate rotation groove (41) on a side wall adjacent to one side of the hollow sleeve, one end of the anchor rod body (1) being provided with a rod body rotation block (11), the rod body block being rotatably connected in the limit plate rotation groove (41), the driving plate (81) being provided with a clamping groove (812), the other end of the anchor rod body (1) being provided with a clamping block (12), the clamping block (12) being capable of being inserted into the clamping groove (812).

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