Tensioning tool assembly

Abstract

The utility model discloses a tensioning tool assembly, and belongs to the technical field of steel pull rod tensioning. Comprising heavy frames and a tensioning screw rod, the two heavy frames are arranged on two steel pull rods connected through a connecting sleeve in a penetrating mode respectively, and the two heavy frames are connected through the tensioning screw rod. A jack is detachably connected to the heavy frame on one side, a T-shaped plate is arranged on the side, facing the jack, of the heavy frame in a protruding mode, a top plate is fixed to the tail end of a telescopic rod of the jack, a T-shaped groove is formed in the top plate, and the T-shaped plate is inserted into the T-shaped groove. And the jack is connected with the tensioning screw rod. The jack is detachably connected, so that the jack can be reused, the utilization efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] This application belongs to the field of steel tie rod tensioning technology, specifically relating to a tensioning fixture assembly. Background Technology

[0002] Steel tie rods, as tension members, provide essential support in frame structures. They transfer external loads (such as wind loads, snow loads, or seismic forces) to the foundation or other structural members, thus maintaining the stability and integrity of the building. In high-rise buildings or multi-span structures, steel tie rods are often used as part of the lateral force resisting system to help resist lateral forces. These lateral forces may originate from wind pressure or seismic activity. By installing diagonal or horizontal tie rods, the entire structure can be made stronger and more stable.

[0003] Tensioning steel tie rods is a crucial step in steel structure installation or prestressed structure construction. Through tensioning, prestress is applied to the steel tie rods, thereby improving the structure's stiffness, load-bearing capacity, and crack resistance. In some cases, tensioning can help compensate for structural deformation caused by factors such as temperature changes or foundation settlement.

[0004] Most of the time, mechanical tensioning is used, employing hydraulic jacks and other mechanical equipment to tension the steel tie rods. For example, a steel tie rod tensioning system with authorization announcement number CN204691274U includes steel tie rods and tensioning fixtures. The steel tie rods include a left steel tie rod, a right steel tie rod, and an adjusting sleeve. The left steel tie rod has a left tensioning end threadedly connected to the left end of the adjusting sleeve, and the right steel tie rod has a right tensioning end threadedly connected to the right end of the adjusting sleeve. The tensioning fixture includes a left clamp, a right clamp, and at least two adjusting rods. The left clamp is fitted onto the body of the left steel tie rod and is limited to the left tensioning end, while the right clamp is fitted onto the body of the right steel tie rod and is limited to the right tensioning end. The left end of the adjusting rod slides through the left clamp and is equipped with a through-hole jack, while the right end of the adjusting rod slides through the right clamp and is equipped with a positioning element that limits its position on the right side of the right clamp.

[0005] In this patent, the jack is a through-hole jack, which needs to be passed through a steel tie rod during use, making it impossible to disassemble after use, thus turning the jack into a disposable consumable. Utility Model Content

[0006] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a tensioning tooling component. The jack of this application is detachable and can be reused, thereby improving utilization efficiency and reducing costs.

[0007] The technical solution adopted by this application to solve its existing problems is:

[0008] A tensioning fixture assembly includes a support frame and a tensioning screw. A support frame is inserted through each of two steel tie rods connected by a connecting sleeve, and the two support frames are connected by a tensioning screw.

[0009] A jack is detachably connected to a support frame on one side. A T-shaped plate protrudes from the support frame towards the jack. A top plate is fixed to the end of the telescopic rod of the jack. A T-shaped groove is provided on the top plate, and the T-shaped plate is inserted into the T-shaped groove.

[0010] The jack is connected to the tensioning screw.

[0011] Preferably, the bottom of the side plates on both sides of the jack is provided with a second lower groove, the lower end of the second lower groove is open, and the second lower groove is engaged with the tensioning screw.

[0012] The tensioning screw is threaded with a limit bolt, which abuts against the jack.

[0013] Preferably, the support frame includes an inner end plate and an outer end plate, both of which have through holes on their end faces for steel tie rods to pass through, and the inner end plate and the outer end plate are fixedly connected by a connecting plate.

[0014] Preferably, the inner end plate is shorter than the outer end plate, and the outer end plate has through holes on both sides in areas longer than the inner end plate, through which the tensioning screw passes.

[0015] Preferably, the jack includes a middle block and side plates fixed on both sides of the middle block. The bottom of the middle block is recessed with a first lower groove, and the first lower groove, which is open at the lower end, is engaged with the steel tie rod.

[0016] The intermediate block has a piston chamber inside, and a piston is slidably disposed inside the piston chamber. The piston is coaxially and fixedly connected to the telescopic rod.

[0017] Preferably, the intermediate block has two parallel piston chambers inside, which are respectively located on both sides of the first lower slot.

[0018] The ends of the two telescopic poles are connected to a top plate.

[0019] Preferably, the height of the top plate is greater than or equal to the height of the support frame, and the top plate is provided with a third lower slot with an open lower end, which is engaged with the steel tie rod.

[0020] Preferably, an oil distribution channel is connected through the piston chamber above the piston chamber, and the oil distribution channels on the two piston chambers are connected through a main oil channel, which is connected through an inlet / outlet oil pipe outside the intermediate block.

[0021] Preferably, the piston chamber is provided with two spaced-apart limiting rings, and the piston slides between the two limiting rings.

[0022] The piston chamber is located on the side of the two limiting rings away from the piston, and each of the two oil distribution channels is connected to a main oil passage and an inlet / outlet oil pipe.

[0023] Preferably, the tensioning screw is threaded with a fastening bolt, which abuts against the side of the support frame away from the connecting sleeve.

[0024] Compared with the prior art, the advantages of this application are: the jack and the support frame are fixed by snap-fit, making the connection more convenient. At the same time, the jack is detachably connected to the steel tie rod and tensioning screw rod through the first, second, and third lower slots arranged at the lower open end, which makes it easy to disassemble the jack after use for reuse. Attached Figure Description

[0025] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a structural diagram of a tensioning fixture component according to this application.

[0027] Figure 2 This is a structural diagram of the support frame in a tensioning fixture assembly according to this application.

[0028] Figure 3 This is a structural diagram of the jack in a tensioning fixture assembly according to this application.

[0029] Figure 4 for Figure 3 First sectional view,

[0030] Figure 5 for Figure 3 The second sectional view,

[0031] Figure 6 for Figure 3 The third sectional view.

[0032] In the diagram: 1-steel tie rod, 2-end end, 3-connecting sleeve, 4-support frame, 401-inner end plate, 402-outer end plate, 4021-through hole, 403-connecting plate, 404-T-shaped plate, 5-tensioning screw, 6-limiting bolt, 7-fastening bolt, 8-jack, 801-intermediate block, 8011-piston chamber, 8012-limiting ring, 8013-first lower slot, 802-side plate, 8021-second lower slot, 803-piston, 804-telescopic rod, 805-top plate, 8051-T-shaped groove, 8052-third lower slot, 806-oil distribution channel, 807-main oil channel, 808-inlet / outlet oil pipe. Detailed Implementation

[0033] The attached figure shows a preferred embodiment of this tensioning fixture assembly. The following is a more detailed description of this application in conjunction with the attached figure.

[0034] Depend on Figure 1 As shown, a tensioning fixture assembly includes a support frame 4 and a tensioning screw 5. Two steel tie rods 1 connected by a connecting sleeve 3 are respectively provided with a support frame 4. The two support frames 4 are connected by a tensioning screw 5. The steel tie rod 1 is provided with an end 2, which is threadedly connected to the steel tie rod 1. The end 2 is located between the connecting sleeve 3 and the support frame 4, and the end 2 abuts against the support frame 4.

[0035] In existing technologies, most jacks are hollow plunger jacks, also known as through-hole jacks. The jack is directly fitted onto the steel tie rod 1 and cannot be removed after use, essentially making it a disposable consumable.

[0036] To reduce costs and allow the jacks to be removed and reused after use, in this embodiment, a jack 8 is detachably connected to a support frame 4 on one side. A T-shaped plate 404 protrudes from the support frame 4 toward the jack 8. A top plate 805 is fixed to the end of the telescopic rod of the jack 8. A T-shaped groove 8051 is provided on the top plate 805. The T-shaped plate 404 is inserted into the T-shaped groove 8051. The jack 8 is connected to the tensioning screw 5.

[0037] Furthermore, by Figure 2 As shown, the support frame 4 includes an inner end plate 401 and an outer end plate 402. Both end plates have through holes for the steel tie rod 1 to pass through, and the inner diameter of the through holes is the same as the outer diameter of the steel tie rod 1. The inner end plate 401 and the outer end plate 402 are fixedly connected by a connecting plate 403.

[0038] To reduce costs while meeting performance requirements, the inner end plate 401 is shorter than the outer end plate 402. The outer end plate 402 has through holes 4021 on both sides, extending beyond the inner end plate 401. The tensioning screw 5 passes through the through holes 4021, and the inner diameter of the through holes 4021 is equal to the outer diameter of the tensioning screw 5.

[0039] Depend on Figures 3 to 6 As shown, the jack 8 includes a middle block 801 and side plates 802 fixed on both sides of the middle block 801. The bottom of the middle block 801 is recessed with a first lower slot 8013, and the first lower slot 8013, which is open at the lower end, is engaged with the steel tie rod 1.

[0040] The bottom of the side plate 802 is recessed with a second lower slot 8021, the lower end of which is open, and the second lower slot 8021 is engaged with the tensioning screw 5.

[0041] The tensioning screw 5 is threaded with a fastening bolt 7, which abuts against the side of the support frame 4 away from the connecting sleeve 3. The tensioning screw 5 is also threaded with a limiting bolt 6, which abuts against the jack 8.

[0042] The intermediate block 801 has a piston chamber 8011 inside, and a piston 803 is slidably disposed inside the piston chamber 8011. The piston 803 is coaxially and fixedly connected to the telescopic rod 804.

[0043] To ensure uniform stress distribution on the steel tie rod 1 during tensioning, the intermediate block 801 has two parallel piston chambers 8011 located on either side of the first lower slot 8013. The ends of the two telescopic rods 804 are connected to a top plate 805.

[0044] The height of the top plate 805 is greater than or equal to the height of the support frame 4. The top plate 805 is provided with a third lower slot 8052 with an open lower end, and the third lower slot 8052 is engaged with the steel tie rod 1.

[0045] A branch oil passage 806 is connected to the upper part of the piston chamber 8011. The branch oil passages 806 on the two piston chambers 8011 are connected to a main oil passage 807. The main oil passage 807 is connected to the inlet and outlet oil pipes 808 outside the intermediate block 801. The hydraulic oil flow path length between the branch oil passages 806 on the two piston chambers 8011 and the inlet and outlet oil pipes 808 is equal.

[0046] The piston 803 can be driven in the following two ways:

[0047] In the first method, a spring is fitted onto the telescopic rod 804 inside the piston chamber 8011. The two ends of the spring abut against the piston 803 and the end face of the piston chamber 8011, respectively. The spring is positioned on the side of the piston 803 away from the oil distribution channel 806. Under the push of the spring, the piston 803 returns to its original position, and the telescopic rod 804 retracts. When hydraulic oil is injected, it compresses the spring, causing the telescopic rod 804 to extend and tension the steel tie rod 1.

[0048] This arrangement allows the steel tie rod 1 to be tensioned in only one direction.

[0049] The second type has two spaced-apart limiting rings 8012 inside the piston chamber 8011, and the piston 803 slides between the two limiting rings 8012.

[0050] The piston chamber 8011 is located on the side of the two limiting rings 8012 away from the piston 803 and is connected to an oil distribution channel 806. The two oil distribution channels 806 are connected to a main oil channel 807 and an inlet / outlet oil pipe 808 in sequence.

[0051] With this arrangement, hydraulic oil can be injected into both sides of the piston 803, requiring only the adjustment of the electrically controlled three-way valves on the two inlet and outlet oil pipes 808. Therefore, the steel tie rod 1 can be tensioned in both directions.

[0052] In use, after installing the steel tie rod 1, end cap 2, connecting sleeve 3, support frame 4, tensioning screw 5, limit bolt 6, and fastening bolt 7, install the jack 8. When installing the jack 8, simply engage the T-slots 8051 (open at the top and bottom) of the top plate 805 with the T-plate 404, engage the first lower slot 8013 with the steel tie rod 1, and engage the second lower slot 8021 with the tensioning screw 5. After determining the position of the telescopic rod 804, rotate the limit bolt 6 to make it abut against the jack 8.

[0053] Then, hydraulic oil is injected into the jack 8 to begin tensioning the steel tie rod 1. During the tensioning process, the fastening bolt 7 is rotated and its position adjusted. After tensioning is completed, the connecting sleeve 3 is rotated to fix the two steel tie rods 1, and then the jack 8 is removed.

[0054] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A tensioning tool assembly, comprising a force bearing frame (4) and a tensioning screw (5), one force bearing frame (4) is detachably connected to one side of each of the two steel tension rods (1) through a connecting sleeve (3), and the two force bearing frames (4) are connected through the tensioning screw (5), characterized in that: a jack (8) is detachably connected to one side of the force bearing frame (4), a T-shaped plate (404) is protruded from the side of the force bearing frame (4) facing the jack (8), a top plate (805) is fixed to the end of the telescopic rod of the jack (8), a T-shaped slot (8051) is arranged on the top plate (805), and the T-shaped plate (404) is inserted into the T-shaped slot (8051); the jack (8) is connected with the tensioning screw (5).

2. The tensioning tool assembly according to claim 1, characterized in that: second lower clamping grooves (8021) are concavely arranged on the bottom of the side plates (802) on both sides of the jack (8), the second lower clamping grooves (8021) are open at the lower end, and the second lower clamping grooves (8021) are clamped on the tensioning screw (5); a limiting bolt (6) is threadedly connected to the tensioning screw (5), and the limiting bolt (6) abuts against the jack (8).

3. The tensioning tool assembly according to claim 1, characterized in that: the force bearing frame (4) comprises an inner end plate (401) and an outer end plate (402), both of which are provided with through holes for the steel tension rods (1) to pass through, and the inner end plate (401) and the outer end plate (402) are fixedly connected through a connecting plate (403).

4. The tensioning tool assembly according to claim 3, characterized in that: the length of the inner end plate (401) is less than that of the outer end plate (402), the regions of the outer end plate (402) on both sides longer than the inner end plate (401) are provided with penetrating holes (4021), and the tensioning screw (5) penetrates through the penetrating holes (4021).

5. The tensioning tool assembly according to claim 2 or 3 or 4, characterized in that: the jack (8) comprises a middle block (801) and side plates (802) fixed on both sides of the middle block (801), a first lower clamping groove (8013) is concavely arranged on the bottom of the middle block (801), the first lower clamping groove (8013) is open at the lower end, and the first lower clamping groove (8013) is clamped with the steel tension rod (1); a piston cavity (8011) is arranged in the middle block (801), a piston (803) is slidably arranged in the piston cavity (8011), and the piston (803) is coaxially fixedly connected with a telescopic rod (804).

6. The tensioning tool assembly according to claim 5, characterized in that: two parallel piston cavities (8011) are arranged in the middle block (801), and the two piston cavities (8011) are arranged on both sides of the first lower clamping groove (8013) respectively; one top plate (805) is connected to the end portions of the two telescopic rods (804).

7. The tensioning tool assembly according to claim 6, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ The top plate (805) is higher than or equal to the height of the force bearing frame (4), and the third lower clamping groove (8052) is arranged on the top plate (805) and is open at the lower end and is connected with the steel pull rod (1).

8. The tensioning tool assembly according to claim 6 or 7, characterized in that: The oil distribution channel (806) is connected to the piston cavity (8011) and is connected to the main oil channel (807) and the inlet and outlet oil pipe (808) outside the intermediate block (801).

9. The tensioning tool assembly according to claim 8, characterized in that: The piston cavity (8011) is internally provided with two limiting rings (8012) arranged at intervals, and the piston (803) slides between the two limiting rings (8012); The piston cavity (8011) is connected to the two limiting rings (8012) away from the piston (803) and is connected to the oil distribution channel (806), and the two oil distribution channels (806) are sequentially connected to the main oil channel (807) and the inlet and outlet oil pipe (808).

10. The tensioning tool assembly according to claim 1 or 2 or 3 or 4 or 6 or 7 or 9, characterized in that: The tensioning screw rod (5) is connected with the fastening bolt (7), and the fastening bolt (7) is in abutment with the side of the force bearing frame (4) away from the connecting sleeve (3).

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