A temporary trench support structure for construction engineering

Abstract

The present invention belongs to the technical field of trench support, and relates to a temporary trench support structure for construction engineering, including two opposing conflicting frames, a connecting block is provided on the side where the two conflicting frames are close to each other, a telescopic component for adjusting the distance between the two conflicting frames is provided between the two connecting blocks through a rotating component, and a group of supporting plates are placed on the side where the two conflicting frames are far away from each other. The distance between the two conflicting frames is adjusted by the telescopic component to adapt to trenches of different widths, the angle of the conflicting frame is adjusted by operating the rotating component, the use angle is adjusted according to the inclination of the side wall of the trench, and the appropriate number of supporting plates can be selected and stacked according to the height of the trench, and the use method is diversified; in addition, when folded, the limit frame surrounds the supporting plate, so that the connecting piece connects the through hole with a plurality of threaded holes, and at this time, the limit frames on the front and rear sides cannot be turned outward, so that the temporary support structure is assembled and stored, which is convenient for transfer and transportation.

Description

Technical Field

[0001] The invention belongs to the technical field of trench supports, and in particular relates to a temporary trench support structure for construction engineering. Background Art

[0002] Trench excavation is a common and necessary task in the construction process, especially in underground pipeline laying, infrastructure construction and other scenarios. However, after trench excavation, the soil wall is prone to collapse, which not only affects the construction progress, but also may cause serious safety accidents and economic losses. Therefore, reasonable trench support measures are crucial to ensure construction safety and quality.

[0003] The traditional support structure is composed of a telescopic rod and a support plate. When in use, the telescopic rod is pressed between two support plates. Not only is the structure unstable during installation and easy to loosen and fall off, but the support height cannot be adjusted according to the actual height of the groove, which has limitations.

[0004] In the prior art, for example, the patent with patent announcement number CN114277809B discloses a mobile trench support device for agricultural sewage pipe network projects. Although the trench support device installs multiple baffles on both sides of the trench, it needs to be connected in sequence through multiple fixed plates and connecting plates. After temporary use, the multiple baffles cannot be conveniently stored and transferred, and need to be cumbersome to organize, and the use angle of the baffle cannot be conveniently adjusted.

[0005] In view of the shortcomings of the above-mentioned prior art, a temporary trench support structure for construction projects that can overcome the shortcomings of the prior art and has diversified usage modes is designed. The structure can adapt to the width, height and inclination of the trench and can be stored for easy transfer and transportation. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a temporary trench support structure for construction projects that has diversified usage, can adapt to the width, height and inclination of the trench, and can be stored for easy transfer and transportation.

[0007] In order to solve the above technical problems, the present invention provides a temporary groove support structure for construction engineering, including two left and right opposing interference frames, which are respectively used to be placed on the left and right side walls of the groove, the interference frames are vertically arranged, and the sides where the two interference frames are close to each other are provided with connecting blocks, and a telescopic component for adjusting the distance between the two interference frames according to the width of the groove is provided between the two connecting blocks through a rotating component, and when the telescopic component is extended, the two connecting blocks respectively drive the two interference blocks away from each other through the rotating component, and when the telescopic component is shortened, the two interference blocks are close to each other, and a group of support plates for shielding the side walls of the groove are placed on the sides where the two interference frames are away from each other, and the telescopic component is used to move the two interference frames away from each other to apply pressure to the support plates so that the support plates are against the side walls of the groove, and the same group of support plates includes a plurality of support plates stacked up and down in the width direction, and the support plates are arranged horizontally, and a group of support plates has a total of five support plates, and the five support plates are arranged horizontally. The total width of the guard plate is equal to the length of the support plate and also equal to the length of the conflict frame. When in use, a suitable number of support plates are selected for stacking according to the height of the groove, and then the conflict frame applies pressure to the support plate. A plurality of threaded holes 2 are opened on the support plate, and a total of four threaded holes 2 are provided on the same support plate. A plurality of support rods are connected to the front and rear sides of the conflict frame, and a limit frame is provided on the plurality of support rods on the same side that rotate together, and the limit frame provides further limit support for the stacked support plates on one side of the conflict frame, and a threaded hole 1 suitable for corresponding to the threaded hole 2 is opened on the limit frame, so that the connecting piece connects the threaded hole 1 with the threaded hole 2, thereby fixing the support plate on the conflict frame through the limit frame, and the limit frame has a through hole perpendicular to the threaded hole 2, and the shape of the portion of the limit frame with the threaded hole 2 and the through hole is L-shaped, and the limit frame has a support state of rotating and expanding and making the threaded hole 2 correspond to the threaded hole 1, and the limit frame also has a accommodating state of rotating and retracting and making the through hole correspond to the threaded hole 1.

[0008] Preferably, it also includes a support plate connected to the lower side of the limit frame, the support plate is used to support the supporting plate, and the ground supporting effect of the support plate is strengthened under the action of the gravity of the supporting plate. When the limit frame is in a folded state, the support plate can also be cleverly used to limit the supporting plate on the resistance frame.

[0009] Preferably, the telescopic assembly includes a support block and a sleeve respectively arranged on the left and right connecting blocks. A threaded tube is connected to one side of the sleeve, and a screw rod threadedly connected to the threaded tube is inserted into the sleeve. The screw rod is rotatably matched with the support block, and a rubber sleeve is sleeved on the left end of the screw rod.

[0010] Preferably, the rotating assembly includes two worm gears respectively connected to two connecting blocks, the support block is rotatably arranged on the connecting block adjacent to it, and the sleeve is rotatably arranged on the connecting block adjacent to it. The support block and the sleeve are both connected to a worm screw engaged with the worm gear, and the end of the worm screw is connected to a turning handle, which drives the left worm screw to rotate and engage with the left worm wheel. The worm wheel will drive the left contact frame to rotate through the left connecting block, thereby adjusting the use angle of the left contact frame, and drive the right worm screw to rotate to adjust the use angle of the right contact frame.

[0011] Preferably, it also includes two sliders which are slidably arranged on the two abutment frames respectively, a connecting block is connected to the threaded tube, a rotating block which slides through the sleeve and rotates at the end of the screw, a connecting rod rotates between the connecting block and an adjacent slider, and a connecting rod also rotates between the rotating block and an adjacent slider.

[0012] Preferably, it also includes two screw rods that are rotatably arranged on the two interference frames respectively, the screw rods pass through the slider but do not contact the slider, the upper and lower ends of the screw rods are connected with turn handles, the connecting block is slidably arranged on the interference frame, the left and right connecting blocks are respectively threadedly connected to the left and right screw rods, and the screw rod is driven to rotate by the turn handle to make the interference frame move up and down along the connecting block, so as to adjust the height position of the telescopic assembly on the interference frame according to the support requirements of the groove. When the support strength of the upper part of the groove needs to be increased, the telescopic assembly is used at the upper part of the interference frame, and the slider will move up along the interference frame; an insertion rod is movably passed through the slider, and when the groove needs to be supported with a low center of gravity, the telescopic assembly is used at the lower part of the interference frame, and the slider moves down along the interference frame, and the slider will drive the insertion rod to approach the bottom side of the groove.

[0013] Preferably, it also includes a resistance rod rotatably arranged on one side of the limit frame, the lower part of the resistance rod is rotatably provided with a clamping rod, the end of the clamping rod has a clamping shaft portion, and the limit frame is provided with a clamping groove one suitable for the clamping shaft portion of the clamping rod to be clamped into the clamping groove one, and the clamping rod is rotated so that the clamping shaft portion on it is clamped into the clamping groove one, at which time the resistance rod is in a use state of rotating and tilting to the limit frame.

[0014] Preferably, it also includes a guide rod connected to the upper part of the limit frame, a T-shaped sliding sleeve is movably sleeved on the guide rod, a bent portion is bent at the lower end of the resistance rod, the bent portion of the resistance rod is suitable for hooking the T-shaped sliding sleeve, and the limit frame is provided with a second card slot suitable for the card shaft portion of the card rod to be inserted, and the second card slot is located above the first card slot; a stop rod is connected to the T-shaped sliding sleeve, and when hoisting installation is required, the hook is hooked between the T-shaped sliding sleeve and the stop rod.

[0015] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects:

[0016] The distance between the two interference frames can be adjusted by the telescopic component to adapt to grooves of different widths. The angle of the interference frame can be adjusted by operating the rotating component. The use angle can be adjusted according to the inclination of the side wall of the groove. In addition, the appropriate number of support plates can be selected and stacked according to the height of the groove, and the usage methods are diversified. In addition, when folded, the limit frame surrounds the support plate, so that the connecting piece connects the through hole with multiple threaded holes. At this time, the limit frames on the front and rear sides cannot be rotated outward, so the temporary support structure is assembled and stored for easy transfer and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an assembly schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the interference frame, the screw rod and the rotating handle of the present invention.

[0019] Figure 3 It is a schematic diagram of the support rod, the limiting frame and the support plate of the present invention.

[0020] Figure 4 It is a schematic diagram of the state of the present invention during storage and assembly.

[0021] Figure 5 It is a cross-sectional view of the sleeve and the threaded pipe of the present invention.

[0022] Figure 6 It is a schematic diagram of a state in which two interference frames of the present invention are separated from each other and the distance between them increases.

[0023] Figure 7 It is a schematic diagram of the present invention when two interference frames are tilted.

[0024] Figure 8 This is a schematic diagram of the stacking of two temporary support structures of the present invention.

[0025] Fig. 9 The present invention is based on Figure 8 An enlarged schematic diagram of point A.

[0026] The marks in the accompanying drawings provided by the present invention are: 1-resistance frame, 11-screw rod, 12-handle, 2-connection block, 3-telescopic assembly, 31-sleeve, 32-threaded tube, 33-screw, 34-support block, 35-slider, 350-insertion rod, 36-connecting block, 37-rotating block, 38-connecting rod, 4-rotating assembly, 41-worm gear, 42-worm, 51-support rod, 52-limiting frame, 521-threaded hole one, 522-through hole, 53-support plate, 6-support plate, 60-threaded hole two, 71-resistance rod, 72-clamping rod, 73-clamping groove one, 81-guide rod, 82-T-shaped sliding sleeve, 83-clamping groove two, 84-blocking rod. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] A temporary trench support structure for construction engineering, such as Figure 1-Figure 4As shown, it includes two left and right opposing conflict frames 1, which are respectively used to be placed on the left and right side walls of the groove. The conflict frames 1 are vertically arranged, and the two conflict frames 1 are provided with a connecting block 2 on the side close to each other. A telescopic component 3 for adjusting the distance between the two conflict frames 1 according to the width of the groove is provided between the two connecting blocks 2 through a rotating component 4. When the telescopic component 3 is extended, the two connecting blocks 2 are respectively driven to move away from each other through the rotating component 4. When the telescopic component 3 is shortened, the two conflict blocks are brought closer to each other, so as to adapt to grooves of different widths. The rotating component is operated 4, the angle of the connecting block 2 on the telescopic component 3 is adjusted to adjust the use angle of the interference frame 1 according to the inclination angle of the side wall of the groove. A group of supporting plates 6 for shielding the side wall of the groove are placed on the side of the two interference frames 1 that are away from each other. The telescopic component 3 is used to move the two interference frames 1 away from each other to apply pressure to the supporting plates 6 so that the supporting plates 6 are in contact with the side wall of the groove. The same group of supporting plates 6 includes a plurality of supporting plates 6 stacked up and down in the width direction. The supporting plates 6 are placed horizontally. A group of supporting plates 6 has a total of five supporting plates 6, and the total width of the five supporting plates 6 is equal to The length of the supporting plate 6 is also equal to the length of the conflict frame 1. When in use, a suitable number of supporting plates 6 are selected to be stacked according to the height of the groove, and then the conflict frame 1 applies pressure to the supporting plate 6. It has high flexibility and adaptability. A plurality of threaded holes 60 are opened on the supporting plate 6. The same supporting plate 6 has a total of four threaded holes 60. The front and rear sides of the conflict frame 1 are connected with a plurality of supporting rods 51. A limit frame 52 is provided on the plurality of supporting rods 51 on the same side for rotating together. The limit frame 52 further supports the stacked supporting plates 6 on one side of the conflict frame 1. The limit frame 52 further supports the stacked supporting plates 6 on the one side of the conflict frame 1. The frame 52 is provided with a threaded hole 521 corresponding to the threaded hole 60, so that the connecting piece connects the threaded hole 521 with the threaded hole 60, thereby fixing the support plate 6 on the abutment frame 1 through the limiting frame 52, thereby stably supporting and preventing the support plate 6 from gradually deviating and collapsing. The limiting frame 52 is provided with a through hole 522 perpendicular to the threaded hole 60, and the portion of the limiting frame 52 with the threaded hole 60 and the through hole 522 is L-shaped. The limiting frame 52 has a support state in which the threaded hole 60 is rotated and expanded to correspond to the threaded hole 521 (such as Figure 1 ), the limiting frame 52 also has a state of rotating and retracting so that the through hole 522 corresponds to the receiving state of the threaded hole 521 (such as Figure 4), when the temporary use of this support structure is completed, the limit frame 52 is in the supporting state, the connection between the second threaded hole 60 and the first threaded hole 521 is disconnected, and all the support plates 6 in the same group of support plates 6 are stacked in the thickness direction, and then the rotating component 4 is operated to adjust the angle of the connecting block 2 on the telescopic component 3 to drive the resistance frame 1 to be retracted in parallel to the upper side of the telescopic component 3. At this time, the two stacked groups of support plates 6 are placed on the upper sides of the two resistance frames 1 respectively, and then the limit frame 52 in the supporting state is rotated ninety degrees to be in an accommodating state. At this time, the through hole 522 corresponds to the threaded hole 1 521, and the limit frame 52 surrounds the support plate 6, so that the connecting piece connects the through hole 522 with multiple threaded holes 1 521. At this time, the limit frames 52 on the front and rear sides cannot be rotated outward, so that the temporary support structure is assembled and stored for easy transfer and transportation.

[0030] like Figure 1 , Figure 3 and Figure 4 As shown, it also includes a support plate 53 connected to the lower side of the limiting frame 52, and the support plate 53 is used to support the supporting plate 6. Under the action of the gravity of the supporting plate 6, the support effect of the support plate 53 on the ground is strengthened. When the limiting frame 52 is in the retracted state, the support plate 53 can also be cleverly used to limit the supporting plate 6 on the contact frame 1 (such as Figure 4 ).

[0031] like Figure 2 , Figure 5 and Figure 6 As shown, the telescopic assembly 3 includes a support block 34 and a sleeve 31 respectively arranged on the left and right connecting blocks 2. A threaded tube 32 is connected to one side of the sleeve 31. A screw 33 that is threadedly connected to the threaded tube 32 and inserted into the sleeve 31 is matched with the support block 34 for rotation. The screw 33 is rotated on the threaded tube 32 to move the screw 33 to the left. The screw 33 will drive the connecting block 2 to drive the left interference frame 1 to move to the left through the support block 34, thereby increasing the distance between the left and right interference frames 1. The screw 33 is rotated in the opposite direction to move it to the right along the threaded tube 32, and the distance between the two interference frames 1 is reduced, thereby completing the adjustment and realizing the self-locking operation immediately after the adjustment, so as to support the groove more stably. The left end of the screw 33 is sleeved with a rubber sleeve.

[0032] like Figure 6 and Figure 7As shown, the rotating assembly 4 includes two worm gears 41 respectively connected to the two connecting blocks 2, the support block 34 is rotatably arranged on the connecting block 2 adjacent to it, and the sleeve 31 is rotatably arranged on the connecting block 2 adjacent to it. The support block 34 and the sleeve 31 are both connected to a worm 42 meshing with the worm gear 41, and a turning handle is connected to the end of the worm gear 42, which drives the left worm 42 to rotate and mesh with the left worm gear 41. The worm gear 41 will drive the left contact frame 1 to rotate through the left connecting block 2, thereby adjusting the use angle of the left contact frame 1, and driving the right worm 42 to rotate will adjust the use angle of the right contact frame 1. In complex geological conditions or non-standard construction environments, it is ensured that the support structure fits perfectly with the side wall of the trench, reduces the gap, and improves the effectiveness of the support.

[0033] like Figure 6 As shown, it also includes two sliders 35 slidably arranged on the two interference frames 1, a connecting block 36 is connected to the threaded tube 32, a rotating block 37 that slides and passes through the sleeve 31 is rotatable at the end of the screw rod 33, a connecting rod 38 is rotatable between the connecting block 36 and an adjacent slider 35, and a connecting rod 38 is also rotatable between the rotating block 37 and an adjacent slider 35. The connecting rod 38 is used to increase the stability of the structure, and when the screw 33 is rotated on the threaded tube 32, there is no need to manually fix the left interference frame 1, so as to prevent the left interference frame 1 from rotating with the screw rod 33, and the operation is convenient. When the screw 33 is rotated to increase the distance between the two interference frames 1, the left interference frame 1 moves to the left, which will pull the left connecting rod 38 to swing through the slider 35, and the screw 33 moves to the left, which will pull the right connecting rod 38 to swing through the rotating block 37; in addition, when adjusting the use angle of the interference frame 1, the slider 35 will adaptively move along the interference frame 1.

[0034] like Figure 2 As shown, it also includes two screw rods 11 that are rotatably arranged on the two conflict frames 1, the screw rods 11 penetrate the slider 35 but do not contact the slider 35, the upper and lower ends of the screw rods 11 are connected with a rotating handle 12, and the connecting block 2 is slidably arranged on the conflict frame 1. The left and right connecting blocks 2 are respectively threadedly connected with the left and right screw rods 11. The screw rods 11 are driven to rotate by the rotating handle 12, so that the conflict frame 1 moves up and down along the connecting block 2, thereby adjusting the telescopic component 3 on the conflict frame 1 according to the support requirements of the groove. When the upper part of the groove needs to increase the support strength, the telescopic assembly 3 is used at the upper part of the resistance frame 1, and the slider 35 moves up along the resistance frame 1; an insertion rod 350 is movably penetrated through the slider 35, and when the groove needs to be supported with a low center of gravity, the telescopic assembly 3 is used at the lower part of the resistance frame 1, and the slider 35 moves down along the resistance frame 1, and the slider 35 drives the insertion rod 350 to approach the bottom side of the groove, and at this time, the insertion rod 350 can be inserted to the bottom side of the groove to increase stability.

[0035] like Figure 3As shown, it also includes a resistance rod 71 rotatably arranged on one side of the limit frame 52, and the lower part of the resistance rod 71 is rotatably provided with a clamping rod 72, and the end of the clamping rod 72 has a clamping shaft portion, and the limit frame 52 is provided with a clamping groove 73 suitable for the clamping shaft portion of the clamping rod 72 to be clamped into the clamping groove 73. The clamping rod 72 is rotated to make the clamping shaft portion on it clamp into the clamping groove 73. At this time, the resistance rod 71 is in a state of rotation and tilting to the limit frame 52. When supporting the groove, the resistance rod 71 is used to tilt and support the bottom of the groove to increase the stability of the support. When the resistance rod 71 is not needed, the clamping rod 72 is rotated to remove the clamping shaft portion on it from the clamping groove 73.

[0036] like Figure 8 and Fig. 9 As shown, it also includes a guide rod 81 connected to the upper part of the limit frame 52, a T-shaped sliding sleeve 82 is movably sleeved on the guide rod 81, a bent portion is bent at the lower end of the contact rod 71, and the bent portion of the contact rod 71 is suitable for hooking the T-shaped sliding sleeve 82, and a second card groove 83 suitable for the card shaft portion of the card rod 72 to be inserted is opened on the limit frame 52, and the second card groove 83 is located above the first card groove 73. When the depth of the groove is large and the temporary support structure needs to be stacked and used, the two temporary support structures are stacked up and down, and then the card rod 72 of the upper temporary support structure is rotated to make the card shaft on it The part is inserted into the second card slot 83, so that the contact rod 71 can be rotated to make it vertical and retracted. At this time, the T-shaped sliding sleeve 82 on the lower temporary support structure is moved along the guide rod 81 to the lower end bending part of the contact rod 71 on the upper temporary support structure, so as to hook and lock the upper and lower temporary support structures, thereby increasing applicability and stability; a blocking rod 84 is connected to the T-shaped sliding sleeve 82. When hoisting and installation are required, the hook is hooked between the T-shaped sliding sleeve 82 and the blocking rod 84, so that it can be hoisted from the top of the temporary support structure, thereby improving the convenience of installation.

[0037] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. They only express the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0038] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A temporary trench support structure for construction engineering, comprising two opposing conflicting frames (1), each of the two conflicting frames (1) being provided with a connection block (2) on a side close to each other, a telescopic component (3) for adjusting the distance between the two conflicting frames (1) being provided between the two connection blocks (2) via a rotating component (4), and a group of support plates (6) being placed on each of the two conflicting frames (1) being away from each other, characterized in that: The invention also comprises: a plurality of stacked supporting plates (6) are included in the same group of supporting plates (6), a plurality of threaded holes (60) are formed on the supporting plates (6), both sides of the abutting frame (1) are connected to supporting rods (51), a limiting frame (52) is rotatably mounted on the supporting rod (51), a threaded hole (521) suitable for corresponding to the threaded hole (60) is formed on the limiting frame (52), a through hole (522) perpendicular to the threaded hole (60) is formed on the limiting frame (52), the limiting frame (52) has a supporting state of rotating and unfolding so that the threaded hole (60) corresponds to the threaded hole (521), and the limiting frame (52) also has a accommodating state of rotating and retracting so that the through hole (522) corresponds to the threaded hole (521).

2. A temporary trench support structure for construction engineering according to claim 1, characterized in that: It also includes a support plate (53) connected to the lower side of the limiting frame (52), and the support plate (53) is used to support the supporting plate (6).

3. A temporary trench support structure for construction engineering according to claim 1, characterized in that: The telescopic assembly (3) comprises a support block (34) and a sleeve (31) respectively arranged on the two connecting blocks (2); one side of the sleeve (31) is connected to a threaded tube (32); a screw rod (33) threadedly connected to the threaded tube (32) and inserted into the sleeve (31); the screw rod (33) is rotatably matched with the support block (34).

4. A temporary trench support structure for construction engineering according to claim 3, characterized in that: The rotating assembly (4) comprises two worm wheels (41) respectively connected to the two connecting blocks (2); the support block (34) is rotatably arranged on the connecting block (2) adjacent thereto; the sleeve (31) is rotatably arranged on the connecting block (2) adjacent thereto; the support block (34) and the sleeve (31) are both connected to a worm (42) meshing with the worm wheel (41); and the end of the worm (42) is connected to a turning handle.

5. A temporary trench support structure for construction engineering according to claim 4, characterized in that: It also includes two sliders (35) slidably arranged on the two abutment frames (1), a connecting block (36) is connected to the threaded tube (32), a rotating block (37) slidably passing through the sleeve (31) is rotatably provided at the end of the screw rod (33), a connecting rod (38) is rotatably provided between the connecting block (36) and an adjacent slider (35), and a connecting rod (38) is also rotatably provided between the rotating block (37) and an adjacent slider (35).

6. A temporary trench support structure for construction engineering according to claim 5, characterized in that: It also includes two screw rods (11) which are rotatably arranged on the two abutment frames (1), the two ends of the screw rods (11) are connected to a rotating handle (12), the connecting block (2) is slidably arranged on the abutment frame (1), and the two connecting blocks (2) are respectively threadedly connected to the two screw rods (11); and an insertion rod (350) is movably penetrated on the slider (35).

7. A temporary trench support structure for construction engineering according to claim 6, characterized in that: It also includes a resisting rod (71) rotatably arranged on one side of the limiting frame (52), a clamping rod (72) rotatably arranged at the lower part of the resisting rod (71), an end of the clamping rod (72) having a clamping shaft portion, and a clamping groove (73) suitable for the clamping shaft portion of the clamping rod (72) to be clamped in the limiting frame (52).

8. A temporary trench support structure for construction engineering according to claim 7, characterized in that: The invention also comprises a guide rod (81) connected to the upper part of the limit frame (52), a T-shaped sliding sleeve (82) being movably sleeved on the guide rod (81), a bent portion being bent at the lower end of the abutting rod (71), the bent portion of the abutting rod (71) being suitable for hooking the T-shaped sliding sleeve (82), a second clamping groove (83) being suitable for clamping the clamping shaft portion of the clamping rod (72) being provided on the limit frame (52); and a blocking rod (84) being connected to the T-shaped sliding sleeve (82).

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