59results about How to "Realize hoisting" patented technology

The present invention discloses a galvanized steel pipe end thread processing device, which belongs to the technical field of galvanized steel pipe processing equipment, and comprises a base, a cutting assembly is arranged on the base, a displacement circular plate is rotatably installed on the base, and the displacement circular plate is provided with a first fixing assembly and a second fixing assembly. By arranging a fan-shaped support seat one and a fan-shaped support seat two, it is possible to facilitate the lifting of the galvanized steel pipe and improve the installation efficiency of the galvanized steel pipe, and it is also possible to lock the position of the fan-shaped support seat two by the limiting circular block and the fan-shaped limiting strip plate. By arranging the first fixing assembly and the second fixing assembly, it is possible to realize rapid fixation of the galvanized steel pipe and also to realize real-time change of the galvanized steel pipe, that is, it is possible to provide real-time support for the processing position of the galvanized steel pipe, and by arranging the cutting assembly, it is possible to realize rapid adjustment of the position of the thread cutting blade, so that the inner side or the outer side of the galvanized steel pipe can be threaded according to demand.

The utility model discloses a hoisting mechanism for stainless steel pipe fitting production, which comprises two bottom plates, fixed sleeves are fixedly arranged in the middle parts of the top ends of the two bottom plates, sleeve rods are sleeved and connected in the two fixed sleeves, lifting components are fixedly arranged between the sleeve rods and the fixed sleeves, a cross rod is fixedly arranged at the top ends of the two sleeve rods, and the cross rod is connected with the lifting components. An electric sliding rail is fixedly mounted at the bottom end of the transverse rod, and two sliding seats are slidably connected to the surface of the electric sliding rail. The steel pipe fixing piece hoisted through the electric hoist can limit and fix a hoisted steel pipe, in the steel pipe hoisting process, the stability of the steel pipe is effectively ensured, the hoisting safety is improved, the sleeve rod can be driven to ascend and descend through the installed lifting assembly, the transverse rod is driven to ascend and descend through the ascending and descending of the sleeve rod, and the hoisting efficiency is improved. And through lifting of the cross rod, hoisting of the steel pipes within a certain height range can be achieved, and the convenience of steel pipe transporting and loading is improved.

The utility model provides a prefabricated stair plate structure, belongs to the technical field of constructional engineering, and aims to solve the problems that after an existing prefabricated stair plate is installed, when concrete filled in a gap is not solidified, when the prefabricated stair plate is pushed by external force, the position of the prefabricated stair plate deviates, positioning installation needs to be conducted again, and the construction cost is high. The device comprises two installation platforms, one installation platform is arranged on the upper portion, and the other installation platform is arranged on the lower portion; the two sets of reserved steel bars are fixedly connected to the upper end faces of the two mounting platforms correspondingly. The stair piece is mounted on the upper end surfaces of the two mounting platforms; the number of the fixing blocks is two, and the two fixing blocks are fixedly connected to the inner side of the stair piece. The two groups of mounting blocks are respectively inserted into the inner sides of the two groups of fixing blocks; through the arrangement of the limiting device, the limiting of the prefabricated stair plate is realized, the working efficiency is improved, and the labor intensity is reduced.

The present invention provides an assembling machine and an assembling process for the substructure of a rail transit station, and relates to the technical field of rail transit station construction equipment. The assembling machine includes a frame, a driving device, a lifting device and a splicing device; the frame includes a machine arm, a front leg, a middle leg, a rear leg, a first telescopic member and at least one second telescopic member, the front leg, the middle leg and the rear leg are respectively connected to the machine arm and support the machine arm, the first telescopic member is suitable for driving the front leg to be telescopic, and the second telescopic member is suitable for driving the middle leg and / or the rear leg to be telescopic; the driving device is arranged on the middle leg and / or the rear leg and is suitable for driving the frame to move; the lifting device and the splicing device are respectively connected to the machine arm in a sliding manner, the lifting device is suitable for lifting prefabricated components, and the splicing device is suitable for splicing prefabricated components. In the present invention, the prefabricated components of the last few rings can be assembled without spending a lot of time and manually disassembling or moving the assembling machine, which can improve the assembly efficiency of the substructure of the rail transit station.

This utility model relates to the field of steam turbine technology and discloses a self-tightening internal hole gripping device, including a mandrel and a first positioning sleeve. The first positioning sleeve has a small-diameter end and a large-diameter end, and the small-diameter end and the large-diameter end are coaxially provided with through holes. The mandrel passes through the through holes of the small-diameter end and the large-diameter end in sequence, and the mandrel can move axially relative to the first positioning sleeve. One end of the mandrel is connected to a lifting ring, and the other end is connected to a truncated cone with a radius that gradually increases from left to right. The radius of the through hole at the large-diameter end is larger than the maximum radius of the truncated cone, and the radius of the through hole at the small-diameter end matches the radius of the mandrel. At least two equidistant movable parts are slidably installed on the large-diameter end. One end of the movable part is located inside the first positioning sleeve, and the end is an arc-shaped structure that matches the side wall of the truncated cone. The other end is located outside the first positioning sleeve. When the mandrel moves axially towards the lifting ring, the truncated cone pushes the movable parts to move outward of the first positioning sleeve. This utility model is beneficial for reducing labor intensity and safety risks, as well as improving installation accuracy.

The utility model discloses a quick farming assisting tool for a water pump. The quick farming assisting tool comprises a suspension arm assembly and a four-wheel tractor for loading the suspension arm assembly. The suspension arm assembly is composed of a base, a fixed arm, a big arm and a hydraulic cylinder, the base is suspended on a rear-end frame of the four-wheel tractor through a traction frame, the fixed arm is vertically and fixedly arranged on the base, the tail end of the big arm is hinged to the top end of the fixed arm, the upper portion of the big arm is connected with an electric winch, and a steel wire rope of the electric winch is connected with a lifting hook through the head end of the big arm. The hydraulic cylinder is obliquely supported between the fixed arm and the large arm; a frame at the front end of the four-wheel tractor is connected with a triangular support, a supporting bracket used for supporting the large arm is vertically arranged in the middle of the triangular support, and manual folding legs are symmetrically arranged at the bottom corners of the two ends of the triangular support. The water pump carrying device has the advantages that through reasonable design and structural layout, efficient carrying, mounting and dismounting of a water pump are achieved, agricultural production efficiency is improved, labor intensity is reduced, and the water pump carrying device has wide application prospects.

The invention provides polar region drilling integrated equipment and a polar region drilling method, and particularly relates to drilling integrated equipment used for polar region ice layer drilling or in an extreme climate environment. Comprising a polar region air drill circulation integration system used for conducting primary drilling in a drill hole and a polar region drilling fluid circulation integration system used for conducting secondary drilling in the drill hole. The polar region drilling field power integration system is used for providing power support for the polar region air drilling circulation integration system and the polar region drilling fluid circulation integration system; and the drilling machine system is used in cooperation with the polar region air drilling circulation integration system, the polar region drilling fluid circulation integration system and the polar region drilling field power integration system and is used for completing drilling and coring. The low-temperature resistance of the equipment is less than or equal to-45 DEG C, the equipment can overwinter in the south pole, the equipment can be normally started after overwintering, the equipment can endure severe environmental conditions and complex under-ice environment tests in the construction period of the south pole, and the requirement for drilling reliability is met.

The utility model discloses a suspended ceiling mounting structure, which belongs to the technical field of suspended ceiling structures, is particularly applied to the hoisting of calcium carbide plates, and aims to solve the technical problems of high material cost and complicated construction of a keel suspended ceiling mounting mode in the prior art. The suspended ceiling mounting structure comprises a vertical plate, wherein the vertical plate is arranged in a side standing manner; the lower supporting sheet is horizontally fixed at the bottom of the vertical plate; the upper pressing sheet is horizontally nested on the vertical plate; the upper pressing piece and the lower supporting piece are aligned in parallel, the vertical plate is provided with an abutting bolt capable of pushing the upper pressing piece to press downwards in a screwing mode, and the vertical plate is further provided with a hoisting piece. The ceiling mounting structure replaces a traditional mode that keels and steam nails are used for hoisting the calcium carbide plate body, arrangement of the keels is not needed, the material cost is reduced, the steam nails are not needed, used equipment is reduced, the phenomenon that constructors are accidentally injured by the steam nails is avoided, the whole ceiling mounting structure adopts a bolt fixing and hoisting mode, and construction is easier.

The utility model relates to the field of hoisting equipment, in particular to a carrying truss for planet wheel phased array detection, which comprises two truss bodies, a moving frame is arranged between the two truss bodies, a winch is mounted on the moving frame, and a driving part is mounted at the bottom end of a steel wire rope or a chain of the winch. And clamping plates are arranged at the left end and the right end of the driving part correspondingly, and the driving part is used for driving the two clamping plates to slide in the direction close to or away from each other. The purpose of the utility model is to effectively improve the workpiece hoisting convenience of the hoisting equipment, so that the workpiece transportation efficiency of the carrying truss can be improved.

The utility model discloses a heat treatment hanger for a box pit furnace, which belongs to the technical field of metal heat treatment and comprises a supporting rod, a bearing rod, a bearing frame and a fixing plate assembly. The fixing plate assembly is installed at a through hole of a box type workpiece, and the through hole is divided into two fan-shaped through holes. The bottom of the fixing plate assembly is fixedly connected with a fixing ring. The bearing frame is of a U-shaped structure; a bearing ring is processed on the middle part of the U-shaped structure along the thickness direction of the U-shaped structure; a mounting ring is processed on each of two side plates of the U-shaped structure; the two side plates of the U-shaped structure are respectively inserted into the two fan-shaped through holes; the bearing rod is sequentially inserted and mounted in the mounting ring, the fixing ring and the other mounting ring; the supporting rod penetrates through and is installed in the bearing ring. According to the utility model, the problems of low efficiency caused by tedious operation in the process of hoisting large box type workpieces into a furnace and hanging heat treatment in the furnace and potential safety hazards caused by failure of a welding area can be solved, so that the rapid, convenient and safe production of the box type workpieces is ensured.

The present invention discloses a portable method for lifting heavy objects on an electric power tower, including: using the following lifting transmission structure, fixing the lifting transmission structure on the tower by using plate hook parts and strip hook parts on the flat angle steel surface of the tower; the tower is equipped with a first fixed pulley, which is in the same horizontal plane as the lifting transmission structure; the tower is equipped with a second fixed pulley, which is located above the horizontal plane; using a lifting rope, which is assembled on the grinding disc of the lifting structure, passes through the first fixed pulley and the second fixed pulley, and hangs the heavy object; starting the lifting transmission structure, the grinding disc rotates, drives the lifting rope to move, and lifts the heavy object. Through the above settings, it can be achieved under the tower, using the compact lifting structure of the present invention, to achieve the tower lifting of heavy objects with as few users as possible.

The utility model belongs to the technical field of hoisting structures, and particularly relates to a hoisting structure and an air conditioner. The hoisting structure comprises a base, a first hook, a limiting assembly and a connecting base. The base is used for being installed on an installation face of a target piece, the first hook is arranged on the base, the connecting base is used for being installed on the top of the target piece, a hooking groove is formed in the connecting base, the first hook is inserted into the hooking groove and abuts against the top wall of the hooking groove, and the limiting assembly is arranged on the base to limit the first hook to be disengaged from the hooking groove. According to the hoisting structure, the target part can be conveniently hoisted on the ceiling, and installation is convenient and fast.

The utility model provides a foundation pit drainage device, and belongs to the technical field of foundation pit drainage. The foundation pit drainage device is communicated with the water pump and comprises a tank body, a first filtering hole, a partition plate, a rotating shaft, a spiral fan blade, a connecting rod and a brush assembly; a plurality of spiral fan blades are connected with the outer wall of a rotating shaft, and a plurality of connecting rods are connected with the outer wall of the rotating shaft, so that when water in a tank body flows from bottom to top, the water pushes the spiral fan blades to rotate, and the rotating shaft and the connecting rods rotate in the tank body; the brush assembly is connected with the connecting rods, and the brush assembly is attached to the inner wall of the tank body, so that the brush assembly is driven by the multiple connecting rods to rotate on the inner wall of the tank body, silt accumulated on the first filtering holes is driven by the brush assembly to sweep off, the silt is prevented from blocking the first filtering holes, and normal use of the product is ensured.

The utility model relates to the field of leaky board, especially leaky board hoisting device, including frame assembly, the hoisting assembly of connecting on frame assembly and the auxiliary assembly of connecting on hoisting assembly. The utility model discloses through the track movement, realized the hoisting and positioning of leaky board, and greatly promoted the stability of operation, through the cooperation of slide rail, base and bed in frame assembly, make whole hoisting device can along the track horizontal movement, improve the flexibility of continuous installation and alignment operation, through frame assembly, hoisting assembly and auxiliary assembly improve the security of device, connecting rod and first screw and support seat and second screw can flexible adjustment slide rail's length and keep the stability of whole device, the impact and damage that the limiting block of nylon material avoids hard material collision brings, rubber gasket reduces the wear and tear of hoisting rope, improves the security, the counterweight further promotes the anti-overturning ability of device.

The utility model belongs to the technical field of energy storage product transportation, and particularly provides an energy storage product hoisting device which comprises a mounting plate and a guide rod. The guide rod is arranged above the mounting plate; sliding blocks are arranged on the two sides of the guide rod. A limiting structure is arranged on the sliding block and used for adjusting the position of the sliding block on the guide rod so as to adapt to energy storage products of different specifications. A hoisting piece is arranged at the bottom of the sliding block and is used for hoisting a product; a connecting piece is arranged above the mounting plate and is used for connecting the guide rod and the mounting plate; a hoisting piece is arranged on the connecting piece and is used for being matched with hoisting equipment to carry out hoisting work. According to the utility model, the sliding block slides on the guide rod, and the position of the sliding block on the guide rod is adjusted by matching with the limiting structure, so that the energy storage products with different specifications can be adapted, and the adaptive capacity is greatly improved.

The utility model belongs to the technical field of air conditioner equipment, and particularly relates to a plug pin type anti-disengaging mounting structure and an air conditioner. The plug pin type anti-falling installation structure comprises a hanging ring, a base and a plug pin assembly. The hanging ring is connected with a ceiling; the base is used for being connected with an air conditioner, a sliding groove is formed in the face, away from the air conditioner, of the base, and at least one limiting groove communicating with the sliding groove is formed in one end of the sliding groove. The plug pin assembly is connected with the base, the plug pin assembly is configured to slide along the sliding groove, and when the plug pin assembly slides to the end, away from the limiting groove, of the sliding groove, the plug pin assembly is connected with or disconnected from the hanging ring; when the bolt assembly slides to the end, provided with the limiting groove, of the sliding groove, the bolt assembly rotates relative to the base so as to be clamped in the limiting groove to limit relative movement of the bolt assembly and the base. The plug pin type anti-falling mounting structure is used for solving the problem that after a ceiling type air conditioner is mounted, connection is loosened due to vibration generated by operation.

The utility model provides a kind of UHPC-steel box composite beam intelligent hoisting equipment, it is related to bridge engineering construction technical field, including: equipment main frame;Equipment main frame component, the equipment main frame is installed in the upside of equipment main frame component;Steel box girder hanger component, installation is in the upper portion of equipment main frame;UHPC beam hanger component, installation is in the bottom of equipment main frame.The utility model is deficient in view of prior art, develops a kind of UHPC-steel box composite beam intelligent hoisting equipment, the utility model is in view of the problems existing in traditional UHPC-steel box composite beam construction, to improve construction efficiency, reduce construction cost, shorten construction period, reduce manpower and material resources input, improve construction quality.

The present invention provides a rail vehicle passenger compartment roof integrated structure, an installation method and a rail vehicle, and belongs to the technical field of rail vehicles. The rail vehicle passenger compartment roof integrated structure includes a roof, a decorative lamp, a handrail mounting profile and an upper half of the handrail; the roof is provided with ventilation holes and handrail mounting holes that penetrate the roof in the thickness direction, and side beams for connecting with the vehicle body are respectively provided at both ends in the width direction. The decorative lamp is detachably mounted on the roof. The handrail mounting profile is mounted on the back of the roof, and the two ends are respectively connected to two side beams. The upper half of the handrail is mounted on the handrail mounting profile, and the lower part passes through the handrail mounting hole and extends to the bottom of the roof. The present invention also provides a rail vehicle passenger compartment roof integrated structure and a rail vehicle. The rail vehicle passenger compartment roof integrated structure, the installation method and the rail vehicle provided by the present invention effectively reduce the construction workload and construction difficulty of workers, and improve labor efficiency and installation accuracy.

The utility model relates to a chemical equipment maintenance auxiliary device, in particular to a baffle plate for hoisting a heat exchanger tube bundle, which comprises a baffle plate body and a hoisting mechanism formed on the baffle plate body, and a short circuit prevention assembly is arranged on the hoisting mechanism positioned on one side of the baffle plate body; a through hole is formed in the position, corresponding to the lifting mechanism, of the baffle plate body, the lifting mechanism is matched with the through hole of the baffle plate body to form a lifting lug of the baffle plate, and then the whole heat exchanger tube bundle is lifted through the lifting lug of the baffle plate. The tube bundle can be prevented from damaging a slideway or a heat exchange tube in the hoisting process of the tube bundle in a traditional hoisting mode, leakage or difficulty in extraction and installation is avoided, and construction is extremely convenient and safe.

The embodiment of the invention provides a hoisting device and a hoisting method, and the hoisting device comprises a holding assembly which is provided with an adjustable holding space, the holding space is used for accommodating a hoisted object, and the holding assembly is used for holding the hoisted object; the supporting assembly is connected to the enclasping assembly in a rotatable mode, the supporting assembly has a supporting state and a loosening state, when the supporting assembly is in the supporting state, part of the supporting assembly is located above the enclasping space, the supporting assembly is used for hoisting a hoisted object, and when the supporting assembly is in the loosening state, the supporting assembly is located on the peripheral side of the enclasping space. According to the hoisting device, the hoisting object can be limited through the enclasping assembly, the hoisting object can be hoisted through the supporting assembly, so that hoisting of the hoisting object is achieved, the hoisting time is saved, the hoisting efficiency is improved, and the safety risk of high-altitude operation is reduced without mounting and dismounting the lifting lugs.

The utility model provides a hoisting structure and an air conditioner, and belongs to the technical field of air conditioners, the hoisting structure is used for hoisting a target part on a mounting surface, and the hoisting structure comprises a supporting assembly, an adjusting mechanism and a clamping assembly; the supporting assembly comprises a first supporting piece and a second supporting piece, the first supporting piece is used for being connected with a mounting surface, and the second supporting piece is arranged on the first supporting piece; the adjusting mechanism comprises an adjusting assembly, the clamping assembly comprises at least two clamping pieces, the clamping pieces are used for being connected with the target piece, the adjusting assembly is correspondingly connected with the clamping pieces, the adjusting assembly is correspondingly connected with the second supporting piece in a sliding mode, and the adjusting assembly is connected with the first supporting piece; the adjusting assemblies are configured to move relative to the corresponding second supporting pieces so that the two clamping pieces can get close to each other or get away from each other. The hoisting structure is convenient to operate and high in disassembly and assembly efficiency.

The utility model provides a flower basket type circular rail hanging basket device which comprises a flower basket I-shaped steel cantilever frame structure arranged around the outer contour of a building, and the flower basket I-shaped steel cantilever frame structure is fixed to the position close to a roof layer. The annular track structure is fixedly connected to the bottom of the flower basket I-shaped steel cantilever frame structure; the electric pulley block and the driven pulley block are slidably connected to the annular track structure, one ends of the lifting hoisting steel wire ropes on the left side and the right side are jointly connected with the hanging basket body, the other ends of the lifting hoisting steel wire ropes are connected with the hoister, and the hanging basket body is driven by the electric pulley block and the driven pulley block to slide along the annular track structure. And the lifting movement of the hanging basket body is controlled through the hoister. A traditional staged construction mode is broken through, synchronous operation of the eave and the curtain wall is achieved, the process interval is eliminated, the construction period can be remarkably shortened, meanwhile, material hoisting can be achieved, finally, repeated investment of materials and manpower can be reduced, and the construction cost is reduced.

The utility model provides a plate spring lifting clamp and a plate spring lifting system.The plate spring lifting clamp comprises a base frame, a lifting assembly and a fixing assembly, the base frame is provided with a containing cavity suitable for containing a to-be-lifted plate spring, the lifting assembly is arranged on the base frame and provided with a fixing hole suitable for a lifting appliance to penetrate through, and the fixing assembly is arranged on the base frame; the fixing assembly moves to abut against the to-be-hoisted plate spring under the action of external force and is suitable for limiting movement of the to-be-hoisted plate spring. The base frame of the clamp is used for containing the plate spring to be hoisted, the plate spring is prevented from falling off in the hoisting process, the hoisting assembly is firmly connected to the base frame through the fixing holes, and it is ensured that hoisting equipment can firmly lift and move the plate spring through the fixing holes. The fixing assembly is driven to abut against the to-be-hoisted plate spring, so that the plate spring is prevented from moving in the hoisting process, and the hoisting stability is improved. According to the design, the fixing process of plate spring hoisting is simplified, meanwhile, the clamping and fixing stability is improved, and the hoisting direction can be conveniently switched in a bench test so as to adapt to different scene requirements.

The utility model provides a back-turning type container with a fixed bottom frame and a back-turning box hopper. The container comprises the fixed bottom frame, the back-turning box hopper and a lifting assembly of the back-turning box hopper. Wherein the fixed underframe forms a bottom bearing type frame of the container; the rear turnover box hopper is installed on the fixed bottom frame and can rotate around the rear portion of the fixed bottom frame. The lifting assembly is arranged on the front portion of the fixed bottom frame and provides power for rotation of the rear turnover box hopper. According to the back-turning type container, the defects and the problems existing in the existing transportation, loading and unloading processes of powder and particle goods such as coal are effectively solved, and the function of the container is expanded. According to the container, the function that the container unloads towards one side is achieved, all the parts in the structure are reasonable, simple and convenient to design, the strength of the container body is better, and the applicability is higher.

The invention discloses an assembling method of a battery replacing station. The battery replacing station comprises a bottom plate, a battery replacing chamber, a lifting mechanism and a track. The assembling method of the battery replacing station comprises the steps that the bottom plate is installed on the ground; a battery changing chamber is mounted on the ground; the lifting mechanism is mounted on the bottom plate; and the track is arranged on the bottom plate. The bottom plate is used for achieving parking of the electric vehicle and guiding of the electric vehicle. The battery replacing chamber is used for replacing a battery pack of the electric vehicle; the lifting mechanism is used for lifting the electric vehicle, so that the electric vehicle can be conveniently replaced by the battery replacing equipment; the track is used for achieving and guiding movement of the battery replacing equipment so that the battery replacing equipment can move between the electric vehicle and the battery transfer device. In addition, by means of the mode, modularized transportation and hoisting of the parts can be achieved, the safety and convenience of transportation and hoisting are improved, and due to the fact that the single part is independently installed, the battery replacing station is allowed to be adjusted according to different scene conditions and requirements, and the adaptability of the battery replacing station is improved.

The utility model discloses a submerged tight filtering device which comprises a clean water tank, a filtering unit, a backwashing unit and a water distribution unit, the filter unit is arranged in the clean water tank and used for filtering sewage, the backwashing unit is arranged in the clean water tank and used for backwashing the filter unit, and the water distribution unit is arranged above the filter unit and used for supplying sewage to be treated. According to the submerged compact filtering device disclosed by the utility model, the filtering tank and the backwashing tank are arranged into a whole, so that integral hoisting can be realized, and the filtering tank and the backwashing tank are put in from the top end of the clean water tank during use and can be rapidly hoisted out from the clean water tank during maintenance; the backwashing pump is adopted in the backwashing process, so that the situation that a plurality of electric valves can be used for switching backwashing flows is avoided, and the overall cost is effectively reduced.

The present invention discloses a device and method for transporting and installing concrete pipes in a long and narrow deep foundation pit under a complex environment, which comprises a movable base, a hoist, a hook and a concrete pipe rolling mechanism; the movable base comprises a support plate, the support plate spans above the foundation pit, a moving wheel and a guide wheel are installed at the bottom of the support plate, a driving motor for driving the moving wheel is installed on the support plate, and the guide wheel is in contact with steel sheet piles on both sides of the foundation pit; the hoist is arranged in the middle of the upper surface of the support plate, and a clearance through hole is arranged on the surface of the support plate directly below the hoist; the steel wire rope on the hoist is connected to the hook; the concrete pipe rolling mechanism comprises a rotating shaft, a wheel hub and an anti-collision washer; the present invention designs the concrete pipe into a rollable wheel structure through the concrete pipe rolling mechanism, and uses the hoist and the movable base to pull the concrete pipe to roll, and after the concrete pipe is in place, the hoist is used to turn the concrete pipe 90 degrees and install it in a mating manner, so as to realize the movement and hoisting of the concrete pipe on the long and narrow deep foundation pit.